"I love Shangdong Yanggu Sanfeng Drilling tools Co.,Ltd"

2022-05-11 09:02:12

Toggle navigation HomePage home About Us about us Products Center products center News Center news center Sales Network Sales network Online Message Online Message Contact Us contact us   Integral Equipment It is mainly used in railway and subway infrastructure construction, iron ore, mining and other industries. Welcome customers to negotiate cooperation 流式按钮-1 Bench Drilling It is mainly used in railway and subway infrastructure construction, iron ore, mining and other industries. Welcome customers to negotiate cooperation 流式按钮-1 Tapered Equipment It is mainly used in railway and subway infrastructure construction, iron ore, mining and other industries. Welcome customers to negotiate cooperation 流式按钮-1 Drifting and Tunnelling It is mainly used in railway and subway infrastructure construction, iron ore, mining and other industries. Welcome customers to negotiate cooperation 流式按钮-1 CIR Series Bits It is mainly used in railway and subway infrastructure construction, iron ore, mining and other industries. Welcome customers to negotiate cooperation 流式按钮-1 Furnace Tapping Tools It is mainly used in railway and subway infrastructure construction, iron ore, mining and other industries. Welcome customers to negotiate cooperation 流式按钮-1 SF Series Bits It is mainly used in railway and subway infrastructure construction, iron ore, mining and other industries. Welcome customers to negotiate cooperation 流式按钮-1 Coal mining machinery It is mainly used in railway and subway infrastructure construction, iron ore, mining and other industries. Welcome customers to negotiate cooperation 流式按钮-1 Yanggu Sanfeng drilling tools Co., Ltd. is a professional manufacturer integrating the production, manufacturing, R & D and sales of rock drilling tools and drilling tools. 流式按钮-1 Company brandThe "Sanfeng" rock drilling tools produced by the company are mainly used in the infrastructure construction of railways, expressways, tunnels and subways, as well as coal, iron ore, mining and other industries. Quality assuranceQuality is the eternal theme of the enterprise, and the company relies on rich production experience; Scientific management system and high-quality after-sales service continue to grow in the increasingly fierce market competition. Sincere service"Based on innovation, pay attention to quality, sincere service, sincere cooperation and common development" is our consistent pursuit. Providing customers with high-quality, safe and reliable products is our eternal principle, and we will continue to surpass ourselves. Shangdong Yanggu Sanfeng Drilling tools Co.,ltd is aspecialized manufacturer & exporter of quality rock drilling tools inChina, with advanced technology, topclass equipments and meets selectinternational quality standards. Furthermore, our products are produced &designed in terms of IS09001:2008 stipulation. Owing to our products' excellentperformance and reasonable pricing policy, we successfully minimized our everycustomer's drilling cost into per meter. Also we would be happy to design &produce products as per your required specifications. Read More 流式按钮-1 Light drilling DTH drilling tools Heavy drilling Coal mining machinery   Coal Mining Bit Coal Mining Bit More Mining Pick Mining Pick More Shank adapter/rod Shank adapter/rod More Coupling sleeves Coupling sleeves More Coupling sleeves of different diameter Coupling sleeves of different diameter More Drifter rod, R32-Hex25-R25 Drifter rod, R32-Hex25-R25 More Extension rod, R25-Hex25-R25 Extension rod, R25-Hex25-R25 More Speedrod, R25-Hex25-R25 Speedrod, R25-Hex25-R25 More The company mainly produces and operates five series of products: mining machine tools for coal mines, light taper connection drill tools, heavy thread connection drill tools, DTH drilling tools for open-air drilling, and engineering machinery excavation tools. 流式按钮-1 Brief Introduction of Chinese DTH Drilling Tool Brief Introduction of Chinese DTH Drilling Tool2021-11-07Currently, Chinese low air pressure DTH bits are ranked from 65mm to 186mm and mainly from 90mm to 125mm. Low air pressure DTH hammers mainly include 90mm, 100mm and 150mm. Low air pressure DTH drilling tools are mainly used in mainland like small projects, small quarries and areas with poor drilling conditions. Now, Chinese domestic low air pressure DTH drilling tools exceed market needs and form a situation of low input, short service life and meager profit.High air pressure DTH drilling tools have strict requirements on material, machining, heat treatment and integral performance. Chinese high air pressure DTH drilling tools mainly include DTH bits of 105mm to 178 mm, and DTH drilling pipes of 76mm to 146mm. Chinese high air pressure DTH drilling tools are mainly manufactured in Changsha City, Hunan Province, Xuanhua City, Hebei Province, Hubei, Huludao City, Liaoning province, and Taizhou City, Zhejiang Province so on.. Among the products, DTH hammers and DTH bits with the diameters larger than 200 mm or less than 76mm have perfect performance. High air pressure DTH hammer and bits of Xuanhua City, Hebei Province are based on the technique of Ingersoll Land in America and Atlas in Sweden. There is a gap between overseas and domestic high air pressure DTH drilling tools in the aspects of material, machining, heat treatment, etc.See more informationCurrently, Chinese low air pressure DTH bits are ranked from 65mm to 186mm and mainly from 90mm to 125mm. Low air pressure DTH hammers mainly include 90mm, 100mm and 150mm. Low air pressure DTH drilling tools are mainly used in mainland like small projects, small quarries and areas with poor drilling conditions. Now, Chinese domestic low air pressure DTH drilling tools exceed market needs and form a situation of low input, short service life and meager profit.High air pressure DTH drilling tools have strict requirements on material, machining, heat treatment and integral performance. Chinese high air pressure DTH drilling tools mainly include DTH bits of 105mm to 178 mm, and DTH drilling pipes of 76mm to 146mm. Chinese high air pressure DTH drilling tools are mainly manufactured in Changsha City, Hunan Province, Xuanhua City, Hebei Province, Hubei, Huludao City, Liaoning province, and Taizhou City, Zhejiang Province so on.. Among the products, DTH hammers and DTH bits with the diameters larger than 200 mm or less than 76mm have perfect performance. High air pressure DTH hammer and bits of Xuanhua City, Hebei Province are based on the technique of Ingersoll Land in America and Atlas in Sweden. There is a gap between overseas and domestic high air pressure DTH drilling tools in the aspects of material, machining, heat treatment, etc.Button Bit Button Bit2021-11-07Button Bits has long blunt operation service life, and the grinding life of button bits is 4-5 times longer than that of blade bits with the same diameter. The button bits have the advantages of saving assistant labor hour, reducing physical work and accelerating job progress. Therefore, tapered button bits and threaded button bits with different diameters are widely used for drilling hard brittle rock by matching with jumbos. In Sweden engineers’ opinion, it is best matching plan in modern rock drilling technique that the button bits are matched with hydraulic jumbos. In recent 20 years, the technique of button bits is developing very fast both home and aboard. Compared with traditional blade bits, the button bits have the advantages of longer grinding life, high drilling speed, etc.The button bits are mainly divided as following: 1. Down-the-Hole Button Bits Down-the-Hole Button Bits are drill bits matched with Down-the-Hole hammers through splines, and widely used in surface drilling, rock quarries, power and water projects , Water well drilling, , side piling support drilling, etc. Down-the-Hole Button Bits are divided into low air pressure Down-the-Hole Button Bits and middle-high air pressure Down-the-Hole Button Bits. The Down-the-Hole Button Bits are matched with Down-the-Hole hammers and had the characteristics of hole straightness, high speed, and deep hole drilling. Therefore, the Down-the-Hole Button Bits are widely used. 2. Threaded Button Bits Threaded Button Bits are drill bits matched with hydraulic drifters (or pneumatic drifters) and drill rods (or tapered rods) through different threads. The diameters of the Threaded Button Bits ranks from 32 mm to 203 mm. The Threaded Button Bits are mainly used in the fields of underground mining, surface mining, furnace, etc. with the advantages of high speed and convenient grinding.3. Tapered Button BitsTapered Button Bits are drill bits mainly matched with pneumatic rock drills and tapered rods. The Tapered Button Bits are connected with the tapered rods through taper to finish drilling work. The Tapered Button Bits are mainly used in the fields of secondary crushing, anchor rod support, tunneling, etc.See more informationButton Bits has long blunt operation service life, and the grinding life of button bits is 4-5 times longer than that of blade bits with the same diameter. The button bits have the advantages of saving assistant labor hour, reducing physical work and accelerating job progress. Therefore, tapered button bits and threaded button bits with different diameters are widely used for drilling hard brittle rock by matching with jumbos. In Sweden engineers’ opinion, it is best matching plan in modern rock drilling technique that the button bits are matched with hydraulic jumbos. In recent 20 years, the technique of button bits is developing very fast both home and aboard. Compared with traditional blade bits, the button bits have the advantages of longer grinding life, high drilling speed, etc.The button bits are mainly divided as following: 1. Down-the-Hole Button Bits Down-the-Hole Button Bits are drill bits matched with Down-the-Hole hammers through splines, and widely used in surface drilling, rock quarries, power and water projects , Water well drilling, , side piling support drilling, etc. Down-the-Hole Button Bits are divided into low air pressure Down-the-Hole Button Bits and middle-high air pressure Down-the-Hole Button Bits. The Down-the-Hole Button Bits are matched with Down-the-Hole hammers and had the characteristics of hole straightness, high speed, and deep hole drilling. Therefore, the Down-the-Hole Button Bits are widely used. 2. Threaded Button Bits Threaded Button Bits are drill bits matched with hydraulic drifters (or pneumatic drifters) and drill rods (or tapered rods) through different threads. The diameters of the Threaded Button Bits ranks from 32 mm to 203 mm. The Threaded Button Bits are mainly used in the fields of underground mining, surface mining, furnace, etc. with the advantages of high speed and convenient grinding.3. Tapered Button BitsTapered Button Bits are drill bits mainly matched with pneumatic rock drills and tapered rods. The Tapered Button Bits are connected with the tapered rods through taper to finish drilling work. The Tapered Button Bits are mainly used in the fields of secondary crushing, anchor rod support, tunneling, etc.cemented carbide cemented carbide2021-11-07The carbide of button bits in rock drilling tools are basically divided into the following shapes: 1.Semi-spherical2.conical3.parabolic/Ballistic 4.DomedUnder the condition that hydraulic drifters have enough impact power, button bits with semi-spherical carbide have the advantages of high power output coefficient, good rock drilling effect, and firmness and wear resistance of carbide. Button bits with conical carbide can be easily drilled into rocks with high drilling speed. Button bits with conical carbide have high efficiency but poor wear resistance under the condition of inefficient impact power including low air pressure of pneumatic rock drills, performance change of hydraulic drifters, etc.The shape of parabolic carbide is between conical carbide and semi-spherical carbide, and the parabolic carbide is mainly used manufactured by oversea carbide plant or Sino-foreign joint venture. Button bits with domed carbide are suitable for hard and abrasive rock formation.See more informationThe carbide of button bits in rock drilling tools are basically divided into the following shapes: 1.Semi-spherical2.conical3.parabolic/Ballistic 4.DomedUnder the condition that hydraulic drifters have enough impact power, button bits with semi-spherical carbide have the advantages of high power output coefficient, good rock drilling effect, and firmness and wear resistance of carbide. Button bits with conical carbide can be easily drilled into rocks with high drilling speed. Button bits with conical carbide have high efficiency but poor wear resistance under the condition of inefficient impact power including low air pressure of pneumatic rock drills, performance change of hydraulic drifters, etc.The shape of parabolic carbide is between conical carbide and semi-spherical carbide, and the parabolic carbide is mainly used manufactured by oversea carbide plant or Sino-foreign joint venture. Button bits with domed carbide are suitable for hard and abrasive rock formation.Threaded rod in rod drilling tools field Threaded rod in rod drilling tools field2021-11-07Threaded rods include extension rods, light extension rods, drill rods, M-F rods, etc. The threaded rods are characterized in that shank adaptors, drill rods, couplings and bits can be connected into one rock drilling group through threads on the bodies of the rods. The basic requirements of the rock drilling group to connecting threads include tight connect, high power transmission efficiency, good wear resistance, convenient disassemble and so on. Currently, commonly used threads include two kinds of T-thread and R-thread, and compounded threads are barely used.Most foreign rock drilling companies manufacture threaded hex rods of B25mm, B28mm, B32mm, B38mm and B45mm, and round rods of D32mm, D38mm, D45mm and D51mm.See more informationThreaded rods include extension rods, light extension rods, drill rods, M-F rods, etc. The threaded rods are characterized in that shank adaptors, drill rods, couplings and bits can be connected into one rock drilling group through threads on the bodies of the rods. The basic requirements of the rock drilling group to connecting threads include tight connect, high power transmission efficiency, good wear resistance, convenient disassemble and so on. Currently, commonly used threads include two kinds of T-thread and R-thread, and compounded threads are barely used.Most foreign rock drilling companies manufacture threaded hex rods of B25mm, B28mm, B32mm, B38mm and B45mm, and round rods of D32mm, D38mm, D45mm and D51mm.Down-the-Hole Button Bits Down-the-Hole Button Bits2021-11-07Down-the-Hole Button Bits are drill bits matched with Down-the-Hole hammers through splines, and widely used in surface drilling, rock quarries, power and water projects , Water well drilling, , side piling support drilling, etc. Down-the-Hole Button Bits are divided into low air pressure Down-the-Hole Button Bits and middle-high air pressure Down-the-Hole Button Bits. The Down-the-Hole Button Bits are matched with Down-the-Hole hammers and had the characteristics of hole straightness, high speed, and deep hole drilling. Therefore, the Down-the-Hole Button Bits are widely used.See more informationDown-the-Hole Button Bits are drill bits matched with Down-the-Hole hammers through splines, and widely used in surface drilling, rock quarries, power and water projects , Water well drilling, , side piling support drilling, etc. Down-the-Hole Button Bits are divided into low air pressure Down-the-Hole Button Bits and middle-high air pressure Down-the-Hole Button Bits. The Down-the-Hole Button Bits are matched with Down-the-Hole hammers and had the characteristics of hole straightness, high speed, and deep hole drilling. Therefore, the Down-the-Hole Button Bits are widely used.Tapered Button Bits Tapered Button Bits2021-11-07Down-the-Hole Button Bits are drill bits matched with Down-the-Hole hammers through splines, and widely used in surface drilling, rock quarries, power and water projects , Water well drilling, , side piling support drilling, etc. Down-the-Hole Button Bits are divided into low air pressure Down-the-Hole Button Bits and middle-high air pressure Down-the-Hole Button Bits. The Down-the-Hole Button Bits are matched with Down-the-Hole hammers and had the characteristics of hole straightness, high speed, and deep hole drilling. Therefore, the Down-the-Hole Button Bits are widely used.See more informationDown-the-Hole Button Bits are drill bits matched with Down-the-Hole hammers through splines, and widely used in surface drilling, rock quarries, power and water projects , Water well drilling, , side piling support drilling, etc. Down-the-Hole Button Bits are divided into low air pressure Down-the-Hole Button Bits and middle-high air pressure Down-the-Hole Button Bits. The Down-the-Hole Button Bits are matched with Down-the-Hole hammers and had the characteristics of hole straightness, high speed, and deep hole drilling. Therefore, the Down-the-Hole Button Bits are widely used.China’s Best Tapered Rod Production Line Established by Pangolin Project China’s Best Tapered Rod Production Line Established by Pangolin Project2021-11-07Pangolin Project was finished on Feb.28th, 2014. After almost 10 months of adjustment, this tapered rod production line is the best in China. 1.Continuous operation of 7 operators in forging process could effectively control the processing speed, shorten operation period and reduce WIP. By monitoring the heating temperature, forging quality could be guaranteed.2.The heat treatment of the rod is done by roller track style normalizing furnace. With automatic control of the heating temperature and cooling air, decarbonization is controlled and the hardness and metallographic structure of the rods are stablized.3.In quenching, the shanks are heated continuously with automatic alarm under temperature deviation. Rotary plate of the quenching furnace is rotated automatically with video monitor of the whole process. Consistent temperature after heating and consistent hardness after quenching could solve the problem of shank rounding and caving.4.Combine shot-peening and alignment. Rods are rotated forward on shot-peening machine, during which could remove the rust and strengthen the surface and reduce the turnover time.5.The rods are painted on an electrostatic spraying line and filled with oil in inner holes, which could guarantee the quality during transportation and stock. Stress after shot-peening is released with the heating temperature of 230 – 250°, thus could improve the rod life. The rods could be painted to black or grey in order to meet the delivery requirements for customers.6.The tips of common rods are turned so that they could match better with the bits and improve the usage life.7.Stock products are set. Stock on shelves could guarantee in-time delivery and FIFO. Meanwhile, stock quality and batch tracking is improved.8.Quality inspection rules are established and responsibility of workers and management are strengthened to make sure the correct implementation of the processes.See more informationPangolin Project was finished on Feb.28th, 2014. After almost 10 months of adjustment, this tapered rod production line is the best in China. 1.Continuous operation of 7 operators in forging process could effectively control the processing speed, shorten operation period and reduce WIP. By monitoring the heating temperature, forging quality could be guaranteed.2.The heat treatment of the rod is done by roller track style normalizing furnace. With automatic control of the heating temperature and cooling air, decarbonization is controlled and the hardness and metallographic structure of the rods are stablized.3.In quenching, the shanks are heated continuously with automatic alarm under temperature deviation. Rotary plate of the quenching furnace is rotated automatically with video monitor of the whole process. Consistent temperature after heating and consistent hardness after quenching could solve the problem of shank rounding and caving.4.Combine shot-peening and alignment. Rods are rotated forward on shot-peening machine, during which could remove the rust and strengthen the surface and reduce the turnover time.5.The rods are painted on an electrostatic spraying line and filled with oil in inner holes, which could guarantee the quality during transportation and stock. Stress after shot-peening is released with the heating temperature of 230 – 250°, thus could improve the rod life. The rods could be painted to black or grey in order to meet the delivery requirements for customers.6.The tips of common rods are turned so that they could match better with the bits and improve the usage life.7.Stock products are set. Stock on shelves could guarantee in-time delivery and FIFO. Meanwhile, stock quality and batch tracking is improved.8.Quality inspection rules are established and responsibility of workers and management are strengthened to make sure the correct implementation of the processes.Shandong Yanggu Sanfeng Drilling Tools Co., Ltd. Shandong Yanggu Sanfeng Drilling Tools Co., Ltd.2021-11-07Shandong Rock Drilling Tools Co., Ltd. was established in July 2012 and started operation in March 2013. Our business scope consists of development, manufacturing, assembly and selling of rock drilling tools and road picks. The main products include all types of tapered products, threaded products, DTH, coal tools and road picks. There are totally 262 employees, 40 white-collar employees (50% are university graduated or higher) and 222 blue-collar ones, working for production, R&D, quality, supply chain etc..Our company is a joint venture in the beginning which invested by Atlas Copco Group and Shandong San Shan Group Co., Ltd.. On August 2nd 2016, Atlas Copco acquired other stocks held by Sanshan Group and that makes our company become a wholly foreign owned enterprise. The total investment reaches 520 million RMB and the registered capital 280 million RMB.Atlas Copco is an industrial group with world-leading positions in compressors, expanders and air treatment systems, hydraulic breakers, road equipment, portable compressors, generators, mining equipment, power tools and assembly systems. With innovative products and services, Atlas Copco delivers solutions for sustainable productivity. The company was founded in 1873, is based in Stockholm, Sweden, and has a global reach spanning more than 180 countries.With the experienced workers and engineers, and precise machines (including several CNCs) and advanced laboratory, our “Sanshan” Brand rock drilling tools are famous brand products in Shandong and are used in the mining projects, construction projects, and road construction projects all over China and abroad. With continuous improvement of management system, R&D capability and product quality, our company has got the certificates of ISO: 9001 and ISO: 14001.Our company is located in Xihu Town, Yanggu County, Liaocheng City, Shandong Province, and has the reps offices in more than 30 provinces, to satisfy the customers demand all over the country. We also built closed business relationships with more than ten countries and regions in five continents, and our products are well reputed from customers all over the world. As the benchmark company in rock drilling tools industry, we can supply the high quality products and quick service to all customers through Atlas Copco sales and service channels.And university cooperation has always been an important part of employer brand construction Atlas Atlas Copco, Shandong rock drilling tools Co. Ltd. as the Atlas Copco Group members of the company will continue to maintain close cooperation with the surrounding society, continue to actively participate in a variety of ways to employer brand construction, contribute to the harmonious development of the whole society.See more informationShandong Rock Drilling Tools Co., Ltd. was established in July 2012 and started operation in March 2013. Our business scope consists of development, manufacturing, assembly and selling of rock drilling tools and road picks. The main products include all types of tapered products, threaded products, DTH, coal tools and road picks. There are totally 262 employees, 40 white-collar employees (50% are university graduated or higher) and 222 blue-collar ones, working for production, R&D, quality, supply chain etc..Our company is a joint venture in the beginning which invested by Atlas Copco Group and Shandong San Shan Group Co., Ltd.. On August 2nd 2016, Atlas Copco acquired other stocks held by Sanshan Group and that makes our company become a wholly foreign owned enterprise. The total investment reaches 520 million RMB and the registered capital 280 million RMB.Atlas Copco is an industrial group with world-leading positions in compressors, expanders and air treatment systems, hydraulic breakers, road equipment, portable compressors, generators, mining equipment, power tools and assembly systems. With innovative products and services, Atlas Copco delivers solutions for sustainable productivity. The company was founded in 1873, is based in Stockholm, Sweden, and has a global reach spanning more than 180 countries.With the experienced workers and engineers, and precise machines (including several CNCs) and advanced laboratory, our “Sanshan” Brand rock drilling tools are famous brand products in Shandong and are used in the mining projects, construction projects, and road construction projects all over China and abroad. With continuous improvement of management system, R&D capability and product quality, our company has got the certificates of ISO: 9001 and ISO: 14001.Our company is located in Xihu Town, Yanggu County, Liaocheng City, Shandong Province, and has the reps offices in more than 30 provinces, to satisfy the customers demand all over the country. We also built closed business relationships with more than ten countries and regions in five continents, and our products are well reputed from customers all over the world. As the benchmark company in rock drilling tools industry, we can supply the high quality products and quick service to all customers through Atlas Copco sales and service channels.And university cooperation has always been an important part of employer brand construction Atlas Atlas Copco, Shandong rock drilling tools Co. Ltd. as the Atlas Copco Group members of the company will continue to maintain close cooperation with the surrounding society, continue to actively participate in a variety of ways to employer brand construction, contribute to the harmonious development of the whole society.Development of DTH hammers Development of DTH hammers2021-11-07As the development of drifters and the increase of long-hole drilling projects, people noticed high impact energy consumption at the connection of drill rods in the long-hole drilling projects and proposed to deliver drifters to the bottom of holes for drilling. American Ingersoll Land Industrial Technologies Company firstly got the patent in 1932, but the technique was not used in mines until the end of 1940s because of limitations. A DTH hammer which structure is really similar to modern DTH hammers was designed and manufactured in 1951 by Belgian engineer Andrea, not only reducing energy transmission loss, but also reducing noise level. After that, DTH drills were constantly improved and applied in underground mining and open mining. The air pressure is increased from 0.5~0.6MPa to 1.4~1.75MPa at the beginning of 1970s，and to 2.1~2.46MPa at the end of 1970s.See more informationAs the development of drifters and the increase of long-hole drilling projects, people noticed high impact energy consumption at the connection of drill rods in the long-hole drilling projects and proposed to deliver drifters to the bottom of holes for drilling. American Ingersoll Land Industrial Technologies Company firstly got the patent in 1932, but the technique was not used in mines until the end of 1940s because of limitations. A DTH hammer which structure is really similar to modern DTH hammers was designed and manufactured in 1951 by Belgian engineer Andrea, not only reducing energy transmission loss, but also reducing noise level. After that, DTH drills were constantly improved and applied in underground mining and open mining. The air pressure is increased from 0.5~0.6MPa to 1.4~1.75MPa at the beginning of 1970s，and to 2.1~2.46MPa at the end of 1970s. 自定义样式 自定义样式 Time of issue:2021-11-06 21:20:28*{ font-family:"Arial";}#w_grid-1636204237712 > div > .p_gridbox > .p_gridCell:nth-child(n+1){ background: linear-gradient(45deg, #dd2125, #c07325); position: relative;}#c_portalResnav_main-16362045678189612 .navList { border-right: none;}#c_portalResnav_main-16362045678189612 .titlea { font-size: 12px; color: #6c6c6c; font-family: Arial; font-weight: weight; transition: 0.5s;}#c_portalResnav_main-16362045678189612 .mainTitle a.titleb { display: none;}#c_portalResnav_main-16362045678189612 .navList { flex: 14%;}/*#c_portalResnav_main-16362045678189612 #nav .nav li:nth-child(1) { background: url(/repository/image/c76bf390-9523-4f58-97f6-8ae64ba677cb.png_366xaf.png) no-repeat center 70%}#c_portalResnav_main-16362045678189612 #nav .nav li:nth-child(2) { background: url(/repository/image/0de0250d-7ae4-43bc-aa95-733ccfa5a646.png_366xaf.png) no-repeat center 70%}#c_portalResnav_main-16362045678189612 #nav .nav li:nth-child(3) { background: url(/repository/image/86f48f93-b74a-45ae-bdc1-14aeb42ba39b.png_366xaf.png) no-repeat center 70%}#c_portalResnav_main-16362045678189612 #nav .nav li:nth-child(4) { background: url(/repository/image/48d60ca4-32ee-4f55-bfa7-7fbde4bfade6.png_366xaf.png) no-repeat center 70%}#c_portalResnav_main-16362045678189612 #nav .nav li:nth-child(5) { background: url(/repository/image/62b2989e-ff45-41c2-acae-8e566d6c4376.png_366xaf.png) no-repeat center 70%}#c_portalResnav_main-16362045678189612 #nav .nav li:nth-child(6) { background: url(/repository/image/f818acb9-f62f-48fb-9cea-48d79bf0cbdf.png_366xaf.png) no-repeat center 70%}#c_portalResnav_main-16362045678189612 #nav .nav li:nth-child(7) { background: url(/repository/image/16c88618-b028-4859-9cc2-fa57ad2614b5.png_366xaf.png) no-repeat center 70%}*/#c_portalResnav_main-16362045678189612 .mainTitle { display: block; 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padding: 20px 0; background: linear-gradient(45deg, #dd2125, #c07325);flex: 30%; margin-top: 0 !important; margin-bottom: 5px;} #c_portalResnav_main-16362045678189612 #nav .nav li {background: none !important;} #c_portalResnav_main-16362045678189612 .titlea { font-weight: 700; text-transform: uppercase;} #c_portalResProduct_category-16407854487130231 .swiper-container-multirow>.swiper-wrapper { flex-wrap: wrap; width: 100% !important; display: flex;} #c_portalResProduct_category-16407854487130231 .proCateDemo { padding: 0 10px;}} Zhao Chuanxiang, general manager of Yanggu Sanfeng drilling tools, and all employees warmly welcome friends from all walks of life to visit and guide the company! 查看详情 Contact InformationChuanxiang Zhao: +86-13906356937Lei Yan :+86-15064051005+86-0635-6513996 / Office Tel Light DrillingIntegral EquipmentTapered Equipment DTH Drilling ToolsCIR Series BitsSF Series Bits Heavy DrillingBench DrillingDrifting and TunnellingFurnace Tapping Tools Coal mining machinery COPYRIGHT©2021-2026 All Rights Reserved：Yanggu Sanfeng Drilling tools Co.,ltd. 鲁ICP备16017598号-2Back-stage Management