HomeSupplier Discoveryarrow-rightManufacturing & Processing Machineryarrow-rightOther Mining Machineryarrow-rightApi Polished Rods Factories & Companies
Filter
Category
More
Management Certification
More
R&D Capacity
Annual Revenue
More
No.of Employees
Province & Region
More
about api polished rods
  • Technological Innovation
  • Reliable Supply Chains
  • Substantial Manufacturing Capabilities

api polished rods100+ factories verified

Dongying City Kenli District Jinxiu Petroleum Machinery Co., Ltd

21 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Sucker Rod, Drive Rod, Pony Rod, Polish Rod, Drill and Workover Rig and Accessories, Well Control Equipment, Well Head Equipment, Handling Tools, Mud Pump and Spare Parts, Bottom Hole Products, Downhole Tools, Flow Line Products
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Dongying Jinxiu Petroleum Machinery Co., Ltd (JX PETRO) was founded in 2005 with registered capital of RMB 50, 000, 000 Yuan in Shengli Oilfield, the oil equipment hub of China. JX Petro is a professional manufacturer and supplier of petroleum drilling and production equipment with API certification.

Jianhu Jinji Import and Export Co., Ltd

12 yrs
·Trading Company
Main Products:
Drilling equipment and accessories
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
As a professional exporter specializing in oil drilling tools and equipment, our company has been deeply engaged in the global energy equipment supply chain since its establishment. We are committed to providing high-quality, reliable oil drilling tools and equipment to customers worldwide, covering a comprehensive range of products such as drill bits, drill pipes, wellhead equipment, drilling rig components, and auxiliary tools for oil extraction. These products are manufactured in strict accordance with international industry standards and have passed multiple quality certification systems, ensuring stable performance and long service life in harsh oilfield operating environments.

Shandong Light Fir Machinery Equipment Co., Ltd.

Main Products:
API Pumping Unit Belt Long Stroke Pumping Unit, Blowout Preventer Bop, Power Tongs Manual Tongs Elavator Safety Clamp, Cementing Unit Cementing Truck Workover Rig, Shale Shaker Shale Shaker Screen, Sucker Rod Pony Rod Sink Bar Srp, Rubber Hose Control Hose Mud Drilling Hose, Cementing Tools Float Collar/Shoe Centralizer, OCTG Casing Tubing Drill Pipe Linepipe, Mud Pump and Spare Parts
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
SHANDONG LIGHT FIR MACHINERY Co., Ltd (LIGHT FIR) is located in Shengli Oilfield, Shandong Province, China.

Puyang Zhongshi Group Co., Ltd.

29 yrs
·Manufacturer/Factory
Main Products:
Float Collar and Float Shoe, Cementing Basket, Stage Collar, Cementing Head
Country/Region:
Henan, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Restructured from SINOPEC in 1997, Puyang Zhongshi Group Co., Ltd has 18 years manufacturing experience of petroleum machinery products till now, we have competitive prices of our main products of casing accessories like bow spring centralizer, solid rigid centralizer, float equipment, cementing plug etc.

Shandong Rosenwell Petroleum Technology Co., Ltd.

9 yrs
Main Products:
Mud Pump, Top Drive, Power Tongs, Cement Tools, Solid Control, Bop&Well Head, Handing Tools, Flowline Products, OCTG, Ironrough Parts
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Rosenwell petroleum technology Co., Ltd (hereinafter as Rosenwell company) is located in Dongying City, Shengli Oilfield(Belongs to Sinopec), which is the second largest oilfield and the largest petroleum industry base in China. Rosenwell company is a professional company engaged in petroleum equipment and spare parts, which is a reputable manufacturer and solution provider to oil gas drilling industry. We are focused on consumable parts, aiming for increasing parts life span, reduced operational cost, shorter downtime. Based on our domestic business with Shengli oilfield and professional engineering&commercial team, Rosenwell had built up a solid network and same-boat partnership with worldwide clients. Key advantage: OEM quality, 100% interchangeable. Competitive prices, In-time delivery, after-sales warranty service. The major scope of our products is, Top Drive System Spares, Mud pumps & spares, handling tools, BOP and BOP spares of RAM, Seals, etc We sincerely look forward to the chances of serving esteemed customers from all over the world and win-win business in the long run.

GPE Oil Machinery Co., Ltd

5.0
Main Products:
Oilfield Products, Drill Rig, Petroleum Equipment, Drilling Service, Oilfield Tools, Bop, API Blowout Preventer, API Tubing Coupling, Drill Pipe, Pipe Power Tong
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
GPE OIL Machinery Co., Ltd was founded in 2005. We specialize in the production of API 6A valves, Christmas trees, API 16A blowout preventers, API 5DP drill pipes, and other products. We have 12 professional and technical personnel, 45 production workers, 13 professional inspection personnel, 14 professional sales personnel, 5 professional service personnel, 50 large-scale professional processing equipment, more than 40 professional testing equipment, and a plant area of more than 40000 square meters. In 2015, we set up a branch in the United States, expanded its sales share in North America, and its product quality was recognized by international well-known oil companies, and established a long-term and stable cooperative relationship. The company adheres to the principle of "customer first, quality first". The company enjoys a good reputation for product quality and delivery time. Our vision is to become a world-class oil equipment supplier. Our mission is to provide customers with the best oil equipment. We are willing to fight for it all our lives.

Hongkong Eastlong Technology Co., Limited

Main Products:
Tubing Coupling, Casing Coupling, Pup Joints, Crossovers, Centralizer, Carbon Steel Pipe, API 5L Pipe, Oil Drill Pipe, Oilfield Drilling Rig, Oil Country Tubular Goods
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
HONGKONG EASTLONG TECHNOLOGY Co., Limited We are mainly engaged in the sales of tubing coupling, casing coupling, pup joints, tool joints, and so on. Our factory is located in Henan, China. We have more than 15 years of experience in production, We have the ISO 9001 Quality Control Certificate, API - 5CT Certificate.

Shandong Seaco Machinery Equipment Co., Ltd.

5.0
Main Products:
Oil Equipment, Drilling Tool, Rig, Wellhead Equipment, Steel Tubing Casing, Drill Pipe, Oil Extraction Machinery and Accessories, Valves and Fittings, Marine Spare Parts
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Seaco Machinery Equipment co. Is a fast-growing professional petroleum equipment manufacturer and supplier, integrating petroleum equipment development & application and oilfield technical service into one. It is located in China's second largest oilfield - Shengli Oilfield, center of the Yellow River Delta city - Dongying City, Shandong Province.

Shandong Yacheng Petroleum Technology Co., Ltd.

11 yrs
·Trading Company
Main Products:
Handling Tools, Solid Control Equipment, Cementing Tools, Drilling Tools, Downhole Tools, API 6A Valve
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Yacheng Petroleum Technology Co., Ltd. (YCPT) is a supplier of drilling equipment for the oil and gas industry, located in the second largest oil field in China - Shengli Oilfield in Dongying City. We are a subsidiary of Xincheng Petroleum Group, which is established in 2003. We are a first-class supplier in vendor list of CNPC, SINOPEC, and CNOOC, and member of CCOIC, CCPIT and so on.

Dongying Lake Petroleum Technology Co., Ltd.

15 yrs·5.0
·Trading Company
Main Products:
Bucking Unit, Cementing Hose, Mud Pump Liner, Mud Pump Piston, Fluid End Module, Plug Valve, Swivel Joint, Hammer Union, BOP, Drilling Spool
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Dongying Lake Petroleum Technology Co., Ltd (Lake Petro) is a one-stop oil service company with 15 years of work experience in oil and gas fields. We have served over 300 clients in over 30 countries and regions, involving oil and gas, water wells, mining, geology, oceanography, etc. We commit to provide the best products and services to our customers worldwide.

Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.

Main Products:
API 5CT Tubing and Casing Pipe, API 5CT Tubing and Casing Pup Joint, API 5CT Tubing and Casing Coupling, Down Hole Tools Cementing Tools
Country/Region:
Tianjin, China
Sample Service:
Sample Available
Company Profile:
Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd. Was founded in 1999, mainly engaged in oil pipes and pipe fittings, oil special drilling and production tools and oil automation equipments. The company is named as national integration and standard implementation enterprise, a national science and technology-based small and medium-sized enterprise. With honors of"Henan enterprise technology center", "Henan postdoctoral innovation practice base", the company hold 35 senior engineers, engineers and technicians, and has successively obtained ISO9001 Quality system certificates, API 5CT certificate authorized by American Petroleum Institute and BV Quality supplier evaluation certificate issued by company of France. Owing more than 30 independent intellectual property rights, forming an industrial chain integrating design, development, manufacturing, testing and experiment of numerical control automation equipment for petroleum machinery products, which can meet customers' demand for products Full cycle service.

Goldenman Petroleum Equipment Co., Limited

21 yrs
·Trading Company
Main Products:
Drill Pipe; Heavy-Weight Drill Pipe; Drill Collars; Annular Bop
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Goldenman Petroleum Equipment Co., Ltd. is proudly situated in the picturesque oilfield city of Dongying, nestled in the vibrant Shandong Province of China. Over the course of 18 years in operation, Goldenman has not only solidified its presence in the industry but also established itself as a leading manufacturer and supplier of premium petroleum equipment. We boast our own state-of-the-art factories, where we specialize in crafting an extensive range of drilling strings, valves, Blowout Preventers (BOP), cementing tools, and various other accessories essential for oil drilling rigs. Each of our products is meticulously crafted to adhere to the stringent standards set by API (American Petroleum Institute) and ISO (International Organization for Standardization) certifications, ensuring unparalleled quality and reliability.

Yantai Sunrise Machinery Co., Ltd

7 yrs
·Trading Company
Main Products:
Oilfield Drilling Equipment; Drilling Rig Parts; Wellhead; Handling Tools; Drilling Bits; Spare Parts Of Mud Pump; Downhole And Finishing Tools; Cementing Tools; Solid Control Equipment, Drill String; Casing; Tubing; Petrochemical Products(encapsulated Gel Breaker, Xanthan Gum)
Country/Region:
Shandong, China
Sample Service:
Sample Available
Company Profile:
Yantai Sunrise Machinery Co., Ltd. Is a high-tech enterprise in the oil and gas industry and ventilation industry. Since 2007, our business began with the supply of oil drilling equipment. All production and testing of our oilfield equipment are strictly in accordance with API standards, and some products have passed CE, GOST certification, and the products have been exported to Eastern Europe, Western Europe, the United States, Russia, the Middle East and Southeast Asia etc. After 14 years of experience accumulation and market inspection, none of our products have complaints or returned to the factory due to quality problems.

Wuxi Baiheng Metal Co., Ltd

Main Products:
Chrome Piston Rod, Honed Tube, Skiving&Roller Burnished Tube, Cold Drawn Tube, Honing Pipe, Cold Drawn Steel Pipe, Hydraulic Cylinder Tube, Chrome Plated Bar, Welding Positioner, Welding Rotator
Country/Region:
Jiangsu, China
Company Profile:
Wuxi Baiheng Metal Co., Ltd started in hydraulic cylinder tube and chrome rod industry as early as 2001 in Wuxi city. We mainly specialized in manufacturing of hydraulic cylinder, cold drawn tubes, honed/skived tubes, chromed hollow rod and chrome plated steel bar. Our main products include:

Shandong Xilong Machinery Equipment Co., Ltd.

5.0
Main Products:
API Elevator, API Fishing Tool, Power Tongs, Wellhead & Well Control System, Drilling Rig Accessories, Swivel/Hook Block, Downhole Tools, Cementing Tools, Kelly Pipe Hexagonal Pipe Drilling Pipe, Non-Magnetic Drill Collar
Country/Region:
Shandong, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Shandong xilong Machinery Equipment Company Limited is a supplier of drilling equipment for oil and gas industries.

Dongying Zhaoxin Industry and Trade Co, Ltd.

26 yrs·4.0
·Manufacturer/Factory & Trading Company
Main Products:
Oil Well Packer, Torque Anchor, Centralizer, Pup Joint
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Zhaoxin Industry & Trade Company, Ltd. Of Dongying City is located in the hinterland of beautiful Yellow River Delta --- Dongying City normally called " Petroleum City". The company, which conducts scientific research, development, manufacture, sale and after sale service, is one enterprise for oilfield tool and equipment manufacture.

Shandong Desheng Supply Chain Management Co., Ltd.

7 yrs
·Trading Company
Main Products:
Metal materials
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Desheng Supply Chain Management Co., Ltd. One-stop steel solutions and provider, Located in Jinan city founded in 2015, We are specialized in Carbon steel plate Stainless steel plate, Steel structural profiles such as Steel channel, Steel angle, H beam, I beam, Steel square and rectangular tube and Steel round pipe, Steel solid bars such as Round bar, Deformed bar, Wire coil etc.

Dongying Zhaoxin Industry and Trade Co., Ltd

Country/Region:
Shandong, China
Company Profile:
Dongying Zhaoxin Industry and Trade Co., Ltd. Is located in Dongying, a beautiful city in Shandong Province in China. We integrate production and sales as a whole, with self- management import and export rights.

Zhangjiakou Cge Geo-Machinery Co., Ltd

Country/Region:
Hebei, China
Company Profile:
Zhangjiakou CGE GEO-Machinery Co., Ltd is a specialized drilling rig manufacture in China. It is subordinate to SINOMACH(China National Machinery Industry Corporation) and it's a wholly-owned subsidiary of China GEO-Equipment Corporation(CGE).

Wenzhou Huashang Steel Co., Ltd

Main Products:
Stainless Steel Pipe, Ss Pipe, Stainless Steel Tube, Ss Tube, Butt Welded Fitting, Nickel Alloy Fitting, Flange, Stainless Steel Butt Welded Fitting, Duplex Steel Pipe, Nickel Alloy Steel Pipe
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Huashang Steel was established in 2009, , after 15 years of development, We have gradually grown into a professional industrial pipe system provider and manufacturer. Serving customers from more than 50 Countries and regions World wide

Shandong Shouguang Kunlong Petroleum Machinery Co., Ltd

Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Shandong Shouguang Kunlong Petroleum Machinery Co., Ltd, as a high-tech joint stock corporation specialized in the R&D, manufacturing of petroleum machinery and supporting petroleum engineering service, was established in 2000.

Rigrs Oil Machinery Co., Limited

Country/Region:
Hebei, China
Company Profile:
RIGRS Oil Machinery Co., Limited was established in 2006. RIGRS is located in China's petroleum equipment processing base, Renqiu city, Hebei Province, People's Republic of China. Take advantage of the cluster to develop rapidly. RIGRS has 12 professional and technical personnel, 45 production workers, 13 professional inspection personnel, 50 large-scale professional processing equipment, more than 40 professional testing equipment, plant area of more than 40, 000 square meters.

Wuxue City Changjiang Tools Co., Ltd.

Country/Region:
Hubei, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Wuxue Changjiang Tools Co., Ltd. is located in the urban area of Wuxue City, Hubei Province, China. It is a scientific and technological enterprise integrating R& D, production, processing and sales. Our company has been professionally producing "Jinlong" brand rock drilling tools since 1980. It passed the IS09001 quality management system certification in 1998 and was recognized as a national high-tech enterprise in 2015. In 2020, the provincial enterprise-university joint innovation center was established here. Our company has total assets of nearly RMB100 million yuan, covers an area of 22, 000 square meters, and has a building area of 12, 000 square meters. There are 300 employees, including 32 R& D personnel. It has always adhered to the tenet of "Jinlong rock driIIing tools, leading quality", and has established cooperative relations with many universities like China University of Geosciences, Wuhan University of Technology and Hubei University of Technology. In the meantime, it focuses on introducing and training various kinds of professional and technical personnel to establish a high- quality workforce for R& D. The company has undertaken and completed a number of scientific and technological projects at both national and provincial level. The products have won the third prize of National Science and Technology Progress Award, the second prize of National Spark Technology Award. Ministry Excellent Products, Hubei famous brand, Hebei provincial famous trademark and many provincial & Ministerial scientific and technological progress awards. The company has 18 independent utility model patents, 1 invention patent, 1 invention patent application and 9 utility model patents.

Qingdao Megasoar Machinery Co., Ltd

Main Products:
Pcp, Progrssive Cavity Pump, PC Pump, Espcp, Electric Submersible PC Pump, Srp/Sucker Rod Pump, Srp Spares, Sucker Rod, Beam Pumping Unit, Surface Driving Device for PC Pump
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Qingdao Megasoar Machinery Co., Ltd. Was established in 2018. Its cooperative factory is located in Shengli Oilfield, Dongying, Shandong Province, and has 10 years of experience in the foreign trade export of petroleum machinery. As a recognized industry leader in domestic China, it is committed to develop,  manufacture and supply a variety array of oilfield products categorized as drilling equipment, production equipment, tubular goods, pipelines, chemicals and oilfield services. Technical innovation is always the focus for this National Hi-tech Enterprise and it owns 120 odds national patents, of which 18 are invention patents.  Years of sales efforts have made our products blossoming in nearly every domestic oilfields. Products have been distributed to more than 30 countries such as USA, Canada, Argentina, Cuba, Russia, Kazakhstan, Uzbekistan and Indonesia etc. Three Quality Management Systems attained, such as ISO9001: 2000 Quality Management System, ISO14001 Environmental Management System and OHSAS18001 Occupational Health and Safety Assessment Series, are always integrated throughout the company's daily operation and processes. 16 products such as drilling rig, casing, tubing, drill pipe, pumping unit, sucker rod, sucker rod pump and composite pipe are licensed to use API 4F, API 7K, API 8A, API 5CT, API 5D, API 11E, API 11B, API 11AX and API 15HR monograms. Our strategic goal is to become a national and then an international petroleum equipment supplier and to offer products and solutions for any challenging customer demand. As a recognized industry leader in domestic China, it is committed to develop,  manufacture and supply a variety array of oilfield products categorized as drilling equipment, production equipment, tubular goods, pipelines, chemicals and oilfield services. Technical innovation is always the focus for this National Hi-tech Enterprise and it owns 120 odds national patents, of which 18 are invention patents.  Years of sales efforts have made our products blossoming in nearly every domestic oilfields. Products have been distributed to more than 30 countries such as USA, Canada, Argentina, Cuba, Russia, Kazakhstan, Uzbekistan and Indonesia etc. Three Quality Management Systems attained, such as ISO9001: 2000 Quality Management System, ISO14001 Environmental Management System and OHSAS18001 Occupational Health and Safety Assessment Series, are always integrated throughout the company's daily operation and processes. 16 products such as drilling rig, casing, tubing, drill pipe, pumping unit, sucker rod, sucker rod pump and composite pipe are licensed to use API 4F, API 7K, API 8A, API 5CT, API 5D, API 11E, API 11B, API 11AX and API 15HR monograms. Our strategic goal is to become a national and then an international petroleum equipment supplier and to offer products and solutions for any challenging customer demand.

Shanghai Borui Metal Products Co., Ltd.

Main Products:
Bolt, Nut, Thread Rod, Washer, Rivet, Screw, Stud Bolt, Stud
Country/Region:
Shanghai, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shanghai Borui Metal Products Co., Ltd. Located in Jing'an District, Shanghai, offers OEM/ ODM services for fasteners. With over 20 years of experience in the production and export of high-quality standard fasteners, non-standard parts, which are widely used in various fields such as high-speed rail, ships, nuclear power, new energy, mechanical equipment, petrochemicals, military equipment, aerospace, etc. We have provided high-quality fasteners to over 1, 000 customers from more than 200 countries around the world. Main products include standard (German, American, European, Chinese standards) fasteners (bolts, stud bolts, threaded rod, nuts, washers, rivets, screws) and non-standard fasteners. Our raw material includes carbon steel, stainless steel, and alloy steel, as well as special material fasteners for special application scenarios (ultra-high temperature, ultra-low temperature, strong corrosion).

Wudi Xinxiangju Metal Technology Co., Ltd.

11 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Stainless Steel Rigging Series, Stainless Steel Yacht Accessories Range Serie, Stainless Steel Quick Connection Series, Stainless Steel Valve Series, Stainless Steel Water Meter Series., Equipment Accessories Series, Auto Parts & Accessories, Stainless Steel Furniture Hardware, Custom Products
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Wudi Xinxiangju Metal Technology is located in Wudi county, Shandong province and establish in 2005 year. We are a professional metal product casting, CNC machining export-oriented enterprises. Factory floor space is more than 20000m2 and fixed assets twenty million RMB. We passed ISO-9001, IATF-16949 and CE quality management system certification. We have advanced Spectral material detector and other spectral detector, silica sol precision casting production line and CNC machining processing production line. We have strong technical force, strong design and research and development ability, rich production experience. We have more than 120 staffs including more than 50 professional technical personnel and responsible to company's production and quality control working.

Liaocheng Mingxing Pipe Manufacturing Co., Ltd.

10 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Steel Pipe, Steel Rod, Steel Coil, Steel Sheet, PPGI, PPGL
Country/Region:
Shandong, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
In the magnificent landscape of the steel industry, Liaocheng Mingxing Pipe Manufacturing Co., Ltd. Has been like a rising star since its establishment in 2016. It has emerged prominently in the industry with a rapid momentum and gradually grown into a pioneering enterprise integrating modern production and trade. The company has always focused on the global market with keen insight, and advanced steadily in the fierce market competition relying on forward-looking strategic vision and solid business capabilities, constantly writing its own development chapter.  

Shandong Xindarong Steel Pipe Manufacturing Co., Ltd.

10 yrs·5.0
·Manufacturer/Factory
Main Products:
Steel Tube, Seamless Steel Tube, Steel Plate
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
We are a comprehensive, modern and high-quality enterprise integrating steel production, processing and sales. Located in Shandong Iron and Steel City: Liaocheng. The company has developed rapidly since its establishment. It has established long-term and stable cooperative relations with Shandong Iron and Steel, Rizhao Iron and Steel, etc. Main products: Carbon steel, I-beam, H-beam, stainless steel plate, wear-resistant plate, patterned steel plate, galvanized series, steel pipe, rebar, welded pipe, galvanized welded pipe, spiral welded pipe, etc. Widely used in important fields such as automobile, petroleum, railway, bridge, construction, electric power, transportation, machinery, shipbuilding, light industry, household appliances, kitchen and so on.
15