rectangular tube sizes2,000+ factories verified

Handan Zhengda Steel Pipe Group Co., Ltd. (for short: Zhengda steel pipe, abbreviation: ZDP)which was established in 2005. ZDP is honored as"National High-Tech Enterprise", "National Trustworthy Enterprise", "National Pilot Enterprise for Integration of Information Tech and Industrialization" "National Green Factory", "National Intellectual Property Advantage Enterprise", "National Top 500 Manufacturing Enterprise", " National Top 500 Private Enterprise", "China Top 500 Brand", "Beijing- Tianjin-Hebei Region Top 100 Enterprise", "Hebei Top 100 Enterprise", "Leading Enterprise of Hebei Industrial Cluster", " National Top 30 Benchmark Private Enterprise for Cultural Construction". Dealing with the production and sale of ERW steel pipe, galvanized steel pipe, SSAW steel pipe, GI and black square and rectangular steel pipe, steel -plastic composite pipe, ZDP has become a modern comprehensive enterprise that focuses on manufacturing and sales, integrating science, industry, and trade.

Founded in 2002, Linyi Rongxiang Steel Pipe Co., Ltd. is a professional steel pipe manufacturer located in Hedong Industrial Park, Linyi, China. With over 20 years of manufacturing experience, we specialize in R&D, production and deep processing of welded pipes, cold-rolled strip steel and hot-DIP galvanized steel pipes. As a Provincial Innovative SME and Green Factory with 26 technical patents, we own a complete industrial chain covering raw material processing, precision pipe welding, environmental galvanizing, customized deep processing and integrated logistics services. Our factory covers 200, 000 square meters with advanced intelligent production lines and professional testing laboratories, supporting an annual output of 50, 000 tons. We produce round pipes (15mm-219mm outer diameter) and full-spec square and rectangular tubes, with wall thickness tolerance strictly controlled within ±0.2mm for standard products and ±0.1mm for high-precision customized pipes. Our in-house galvanizing workshop provides adjustable anti-corrosion solutions, with standard zinc coating of 40μm to 85μm and thickened coating over 100μm for coastal, chemical and high-corrosion environments. Adopting eco-friendly passivation technology, our products meet domestic and international environmental standards for smooth export customs clearance. We offer one-stop deep processing including fixed-length cutting from 3m to 12m, bending, punching, polishing and anti-rust treatment, allowing direct installation without secondary processing. We maintain sufficient spot inventory for greenhouse, structural, guardrail, power support and storage rack pipes, with fast delivery: 3-5 days for stock orders, 7-15 days for customized orders and 15-25 days for bulk orders. Our product lineup covers Q235B/Q355B black welded pipes, cold galvanized pipes and high-performance hot-DIP galvanized pipes. Our galvanized pipes feature strong zinc adhesion and over 10 years of outdoor anti-corrosion lifespan, widely used in greenhouses, municipal facilities and industrial projects. We support SGS third-party inspection and provide complete qualification documents, complying with GB/T3091, ASTM and EN standards for global bidding and customs clearance. With strict three-level quality control and independent R&D capabilities, we ensure stable product quality and standardized green production. We support flexible cooperation with low 1-ton MOQ, free samples, tiered pricing, T/T and L/C payment terms, as well as EXW and FOB quotations. Adhering to "Quality First, Customer Supreme, Credit-Based", we provide efficient after-sales service and sincerely cooperate with global clients for win-win development.

Tianjin Wenli New Energy Technology Co., Ltd. Was established in 2012 with a registered capital of 120 million yuan. The company is located in Jinghai Daqiuzhuang, the steel production base of Tianjin, covering an area of 46, 000 square meters. It enjoys a convenient transportation location, being only 50 kilometers away from Tianjin Port. There are about 190 registered employees, and it has a professional team for the research and development, design and production of photovoltaic brackets. It has over 80 production lines, including automated section steel production lines, C-shaped steel/U-shaped steel/Z-shaped steel/C-shaped steel forming, CNC machine cutting, laser cutting, fully automatic cutting machines, forging machines, automatic welding and other automated production lines. The daily production capacity reaches 900 tons, with an annual total output of over 10GW, and it has obtained more than 30 technical and utility model patents. Since its establishment, the company has always adhered to the corporate philosophy of "becoming a transparent enterprise and doing a good job in the transparent business". It has passed the ISO9001 quality system, ISO14001 environmental system, ISO145001 safety system certifications and the recognition of the green supply chain evaluation system, and has also passed the 5-star service certification of the "Commodity After-sales Service Evaluation System". A total of 8 major categories of our company's bracket products have been certified by the authoritative domestic certification body, Electric Energy (Beijing) Certification Center Co., Ltd. At the same time, our company's products have also obtained EU certification. Our main products include steel structure brackets, aluminum alloy brackets, carport brackets, as well as bracket accessories, fasteners, section steel, Angle steel, channel steel, square and rectangular tubes, round tubes and other products. They have been widely applied in photovoltaic power generation, centralized and distributed power generation, agricultural photovoltaic complementarity, fishery photovoltaic complementarity, industrial buildings and other fields. The company takes product quality as its core and intelligent manufacturing as its orientation. Its sales and services cover many countries and regions around the world and have received unanimous praise from customers. Let's join hands with Tianjin Wenli to build a photovoltaic ecosystem together!

Hebei Rongbao import and export trade Co., Ltd is a specializing in the equipment manufacturing field. Our main products include square tubes, round tubes, rectangular tubes, high-density steel tubes and precision steel tubes etc. These products, with their outstanding quality, are widely used in various fields such as construction, mechanical manufacturing, automotive industry and energy, and are highly trusted and praised by customers. We has its own stainless steel research and development department, production department and selling department.

History:

Our company has been engaged in import and export trade for"moret than 20 years. It is a comprehensive manufacturing company engaged in high-quality steel and has established closecooperative relations with major steel production enterprises at home and abroadWith sufficient supplyreasonable price and honest service, we are based on the Chineseand foreign markets, have good corporate reputation and win the trust of our customers. We have a united and cooperative marketing team for development. With high-qualityservice and flexible business mode, we uphold the business philosophy of "survival byquality and development by reputation", Based on the principle of "honest operation, mutual benefit and common development", we are willing to provide new and oldcustomers with better and more professional services to create a better tomorrow.

Tianjin Zhongtian Heavy Industry Group Co., Ltd. is a professional steel supply enterprise located in Beichen District, Tianjin, China, with years of experience in steel import and export trade. We focus on supplying a full range of steel products, including ASTM A106 seamless pipes, S355JR structural sections, EH36 shipbuilding steel, galvanized aluzinc sheets, carbon steel plates and other standard steel materials complying with ASTM, EN and GB standards.

Liaocheng Huajian Steel Co., Ltd is located in Liaocheng, Shandong Province, which is known as "the Water City of Jiangbei", and our company was established in the year 2012, and the registered capital is 101, 0000 RMB, we are a modern private enterprises which are specialized and exporting steel materials in China and win high reputations from our customers.

DATANG STEEL PIPE Co., Ltd is a reputed manufacturer and wholesaler that export to global markets for 17 years.

Weihai snowwing outdoor equipment Co., Ltd is specializing in manufacturing, processing and selling carbon fiber sheet, carbon fiber tube, carbon fiber CNC machining, carbon fiber OEM molding, carbon fiber auto parts and kinds of carbon fiber products etc. According to customer drawings, we can provide segmenting, fine grinding, turning and milling, drilling, through-train services.

Tianjin Youfa International Trade Co., Ltd. is the subsidiary of Tianjin Youfa Group. As one of the windows for international business, we mainly focus on exploring overseas markets as well as developing and offering service for major domestic clients. Tianjin Youfa Group is a comprehensive steel-based enterprise, the business includes steel-making, steel strip, straight seam welded pipe, galvanized pipe, rectangular pipe, spiral pipe, plastic inner-lined pipe, seamless pipe, covered electrode, so on and so forth. The annual integrate production capacity amounts to 7.5 million tons. Since 2006, we have been one of the leading corporations in Chinese Top-500. What is more, Youfa Group is the largest straight-seam welded pipe manufacturer in China. In 2008, "YouFa" Brand was regarded as the "Well-known Chinese Trademark" by Trademark Office State Administration for Industry &Commerce of the People's Republic of China. Meanwhile, we are the first-class supplier for CNPC, Sinopec and some big relevant companies. So as to adapt to the overall-developing strategy, at the beginning of 2010, YouFa Group and its subsidiaries founded SIANO(Beijing) Steel Co., Ltd, which is responsible for the import &export business, building business contact with some influential companies and providing the after-sale service for our customers.

Established in 2006, Dalian Zhong Hai Tian Plastic Products Co., Ltd. Stands as a leading manufacturer specializing in the seamless integration of industrial and trade activities. Boasting over 18 years of unparalleled expertise in extruded plastic profiles, we are dedicated to customizing and producing an extensive range of plastic profile products in various materials and specifications, including but not limited to PVC, UPVC, PC, PP, PE, ABS, and UHMWPE.

Jinan JiuJin Steel Co., Ltd is a leading manufacturer of private owned steel company. We have passed ISO9001 certificate and CE certificate. Our main products are seamless steel pipe, welded steel pipe, galvanized steel pipe, precision steel pipe, SHS&RHS steel pipe, pre-insulation steel pipe, alloy steel pipe, carbon steel plate, galvanized steel plate, alloy steel plate, cold rolled steel bar, carbon steel bar, alloy steel bar, galvanized steel bar, PPGI, PPGL etc. According to American standards ASTM, Japanese standards JIS, German standards DIN, British standards BS and other standards.

Tianjin TEDA Ganghua Trade Co., Ltd. Was established in 2006, located in the heartland of China-Tianjin, which is one of the four municipalities in China and also an open coastal city. Due to the special geographic position, Tianjin is one of the biggest business centers in North China. We enjoy excellent geographic location and convenient water, land and air transportation.

Bazhou GY steel pipe factory was tablished in 2005, mainly engaged in black steel pipe, galvanized steel pipe, cold bend steel profile, roofing sheet, roofing nails, concrete nails, iron nails, black wire, galvanized wire, galvanized steel sheet, hot rolled steel plate, checkered steel plate, scaffolding ladder, machine, etc. Our factory are covering more than 100, 000 square meters area, with the eight world-class steel tube production lines, we can produce over 500, 000MT of tubes annually in ASTM, DIN, BS, GB and other industrial standards. Equipped with first-class facilities for ERW tubing mills, our products′ Quality is fully guaranteed. While our products have also been approved by the third party inspectors such as SGS, BV and COTECNA. We stick to the principle of quality first, service first, continuous improvementAnd innovation to meet the customers for the management and zero defect, zero complaints as the quality objective. To perfect our service, we make our products with good quality at the reasonable price.

Shandong zehao metal materials Co., Ltd. is engaged in titanium and its alloys, zirconium and its alloys, tungsten, molybdenum, monel, inconel, inconel, nickel and other superalloy and corrosion resistant alloy research, smelting and processing enterprises. Products cover sheet, strip, profile, bar, wire, pipe, pipe fittings, forged flange and so on. The factory covers an area of 120, 000 square meters. Now we have vacuum induction furnace introduced from the United States, vacuum consumable arc furnace made in Germany, 2800mm four-high reversible rolling mill, vacuum annealing furnace and other series of production equipment. It can be customized to produce any size plate within 2.6m * 16m, and the maximum length of a single pipe can reach 15m. At the same time, we have more than 100 sets of various kinds of testing instruments, the main equipment includes: American non-destructive testing system, spectral analyzer, carbon and sulfur tester, universal testing machine, ultrasonic testing system, fatigue testing machine, etc. The company has more than ten years of export experience, the products are exported to the United States, the United Kingdom, Germany, Russia, France, Brazil, Japan, south Korea, India, Vietnam, Australia, the Philippines, Zambia, Indonesia and other countries

Tianjin Shengteng International Trade Co., Ltd, which is located in the steel production base of Yangjiayuan Village, Tianjin city, China. Products mainly including PV Mounting systems, Scaffolding steel prop, Galvanized steel pipe, ERW steel pipe, Square/Rectangular steel pipe, Seamless steel pipe, Galvanized steel coil/sheet, Galvanized Corrugated sheet, weldinng all kinds of pet iron cage, steel wire, iron nails, and support OEM service.

Tianjin Building Steel Co., Ltd. is located in Tianjin, China, renowned as the world's largest steel pipe production base. The region boasts convenient transportation and abundant steel resources, creating superior conditions for the company's steady development.

Permanent Steel Manufacturing Co., Ltd has been committed to being a major supplier of quality kinds of carbon steel pipe, stainless steel tube, hollow section, casing pipe, numerous types of piping equipments including Bend, Cap, Coupling, Elbow, Reducer, Stub End, Tee, Olet, Joint, Gasket, etc. As a factory, which specializing in the production, processing and sales of various steel pipes and pipe fittings size enterprises, headquartered in Hunan, the production base is located in Shandong and Tianjin.

Guangdong ShangFeng Steel Group Co., Ltd located in Lecong Steel World, Foshan city, China, has more than 15 years development history.

Suzhou Hengxinyu Aluminum Technology Co., Ltd. Was founded in 2006, and the company is located in Suzhou, Jiangsu, China, adjacent to the port of Shanghai. This strategic location provides the company with convenient access to both domestic and international markets, as well as efficient transportation and logistics support. Over the years, the company has established itself as a leading provider of high-quality aluminum products and services, catering to a wide range of customers from various industries.

"Shandong Huifeng aluminium Co., Ltd". Is a newly established aluminum processing production enterprise, restructured from state-run enterprise, is located in China's" rose town "- PingYin county of Jinan city territory, covers an area of more than 600 acres, has 1600 employees, including professional technology personnel 162 people, fixed assets 530 million Yuan, it has 3 production factory and a joint venture factory, after years of development, the enterprise has electrolysis, cast-rolling, cold rolling, hot rolling, profiles and wire production line, etc.

Established in 2007, Qingdao Aerolite Technology Co., Ltd provides carbon fiber products design and manufacture solutions. We specialized in designing and manufacturing carbon fiber fabrics, carbon fiber surface mat, carbon fiber mesh, aramid fiber fabrics, carbon fiber tubes, carbon fiber sheets and CNC parts etc. Due to the high strength and modulus, light weight property, our carbon fiber products are widely used in the area of Aerospace, Construction, Wind power, Marine, Automobile decoration, Sports equipment.

Founded in 2005, SHS Stainless Steel Co., Limited is a leading manufacturer of stainless steel products in China. We have formed professional teams for the management of our factory and the sales of the manufacture. For years, more and more companies around the world have worked with us in stainless steel area for long terms and even some have been our agents.

Jiangsu HYT International Trading Co., Ltd was established in 2015, which is a wholly-owned subsidiary of Wuxi Lusheng Special Steel Co., Ltd., Jiangsu HYT International Trading Co. Is responsible for the overseas marketing business of various metal products produced by our group. We specialize in alloy steel, stainless steel, carbon steel, copper, aluminum, high nickel chromium alloy and other materials of pipes, plates, bars, profiles, piping fittings and welding materials, we dediceted in providing one-stop service for petroleum, chemical, electric power and automobile manufacturing industries.

The Tangshan Zhenxiang Group was founded in 2005. After several years of development, Zhenxiang has developt into a integrated iron and steel enterprise of strip slitting, Hot DIP galvanized processing, international trade and logistics and distribution.

Donghai Dehui Lighting Appliance technology company is one of the leading high quality quartz glass manufacturer and supplier in China.

SHANDONG TONGMAO SPECIAL STEEL Co., Ltd is reputed at supplying copper pipe, aluminum tube, brass tube, stainless steel coil, galvanized steel coil, precision seamless steel pipe, also supply steel plate, steel coil and steel pipe, lead sheet etc.

Zibo Xinnuo International Trading Co., Ltd supply all kinds of carbon fiber products (including carbon fiber tubing/rod, carbon fiber plate/sheet, carbon fiber sandwich panel, carbon fiber telescopic pole, carbon fiber special-shaped piece etc ) and glass fiber products(include fiberglass tubes/plates/sandwich panel/telescopic pole/irregular products etc) for 10 years. We Xinnuo served more than 90 countries & area clients around the world in the last 10 years. We got rich sucess experience from the projects. Although there are a lot of difficulties and setbacks, We try our best to find a way to solve it, We thanks every clients to help us grow up.

Brilliance Group Corporation, Guangyin Asia Aluminum Factory Co., Ltd, has been a leading supplier in China since 2002 for aluminum extrusion profiles, fabricated aluminum products, aluminum fences and aluminum CNC manining parts, etc.