construction rectangular tube2,000+ factories verified

TOPREGAL(TIANJIN) INDUSTRIAL CO, Ltd. located IN TIANJIN, China, WHICH IS LARGEST PORT IN THE NORTH OF China. TOPREGAL HAS OVER 15 YEARS EXPORT EXPERIENCE IN STEEL FIELD, MAINLY SELL BLACK STEEL PIPE, GALVANIZED STEEL PIPE, STEEL COIL, STEEL SHEET, PRE-PAINTED & GALVANIZED STEEL COIL AND STEEL PROFILES.

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.

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.

Tianjin Friend Steel Group with "TFCO" Brand has 5 subsidiary compainies include Tianjin Friend Steel Pipe Co., Ltd. Tianjin Steel Galvanization Co., Ltd. Tianjin Friend Metal Material Co., Ltd. Tianjin Friend Import&Export Co., Ltd. Tianjin Steel Import&Export Co., Ltd. Built in 1999 with registered capital of RMB 30 million, we have an annual production capacity of 400, 000 MT and exporting quatity of 60, 000MT.

HONGBANG (SHANDONG) COMPOSITES Co., Ltd., established in 1979 (formerly Xingtai Hongbang Composite Materials Co., Ltd. ), is a leading FRP manufacturer with 40 years of industry experience. We specialize in research and development and production of FRP pultruded profiles, FRP gratings, FRP pipes, and custom FRP components. As a one-stop FRP solution provider, we cover product design, customized production, on-site installation, and after-sales service, catering to construction, municipal engineering, chemical processing, and environmental protection industries.

Tianjin TianYingTai(TYT) Steel Pipe Co., Ltd is located in Jinghai, Tianjin, which is professionally engaged in steel production sales, steel processing, greenhouse engineering with accessories and export business. It has been experienced for 18 years so far. We have 13 production lines for various kinds of steel pipe, 10 processing production lines and 2 environmental production hot-dipped galvanizing lines. We not only can produce 450, 000 tons of various sizes of pre-galvanized steel pipe, but also can produce deep processing pipe with 100, 000 tons. Our annual production capacity of hot dipped galvanized steel pipe is 200, 000 tons, capacity of greenhouse engineering material is 250, 000 tons and highway column and guardrail is 200, 000 tons.

Tianjin Baolai Hongtong New Energy Technology Co., Ltd. (hereinafter referred to as Baolai Hongtong) is located in Jinghai District, southern Tianjin - one of China's four major municipalities directly under the Central Government. Founded in 2016, the company covers an area of 12, 000 square meters with over 100 employees. It is equipped with more than 60 advanced industrial production lines, achieving an annual output of 125, 000 tons.

Hebei Yingnai Environmental Protection Technology Co., Ltd.

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.

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.  

Company Profile

Hebei Derunze Chemical Equipment Co., Ltd is a high tech enterprises that collection of sale for project consulting, designed and developed, engineering design, materials purchaseing, transport of goods, equipmeny installation and debugging, also we had pass the ISO 9001: 2015, ISO14001: 2015 and GB/T45001-2020/ISO45001: 2018 international quality mamagement system certification.

Jiangsu Zhongwang New Materials Technology Co., Ltd. Was established in December 2019, covering an area of over 43, 000 square meters and a building area of 35, 000 square meters.

Shandong Xinshenhao Intelligent Equipment Co., Ltd with the total assets of 500 million, is one of the largest seamless steel pipe manufactures in Shandong Province Subsidiary export trading Company Shandong xinshenhao international Trade CO. Ltd. Our company is located in Taishan Road of Liaocheng Economic Development Zone.

Shandong Kanghong Machinery Manufacturing Co., Ltd.

Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.

Our company is a comprehensive enterprise specializing in the R&D, production and export of stainless steel raw materials and finished products. With over a decade of deep cultivation in the industry, we have built a complete industrial chain covering raw material smelting, precision processing and global distribution. Our main products include 304/316/201 series stainless steel plates, pipes, bars and customized deep-processing products. Relying on stable quality, flexible customization schemes and efficient delivery capabilities, our products are exported to more than 80 countries and regions such as Europe, America, Southeast Asia and the Middle East, and are widely used in construction decoration, mechanical equipment, chemical equipment, kitchenware & sanitary ware, automobile manufacturing and other fields.

Shandong Hongyan Metal Materials Co., Ltd.

Shanghai Sunnyda House Co., Ltd. ---

SHANDONG CHANGFA ELECTRICAL EQUIPMENT Co., Ltd (Xinbaolong Steel Co, . Ltd) is a seamless steel pipe, steel plate and steel bar stockist and trader, located in Liaocheng City, a beautiful water city in Shandong Province, China.

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.

Tianjin Xinsihai Technology Co., Ltd. Located in the important economic center of northern China, Tianjin enjoys a superior geographical location. It faces the Bohai Sea to the east and connects to the core area of the Beijing-Tianjin-Hebei region to the west. Relying on convenient port transportation conditions, a complete industrial supporting system, and the rapidly developing regional economy, it provides unique advantages for the stable growth of enterprises. As a national comprehensive transportation hub, Tianjin has an integrated logistics network including sea, land and air transportation, enabling us to provide global customers with timely and reliable steel products and services with higher efficiency and lower costs.  

Shanghai Aigang International Trading Co., Ltd. is a leader in steel recycling and a pioneer in new materials

Shandong Ruida Steel Co., Ltd. is a large privately operated steel manufacture was founded 2021, located in Xingfu Economic Development Zone, county, which is the largeststeelcenter for black and white iron manufacture with convenient transportation, like Jidong Railway and National Highway 205 passing through and Jinan-Qingdao Expressway and Binzhou-Zibo Expressway connecting, less than 200 km away from Tianjin Port, Qingdao Port, Qingdao Airport, and Jinan Airport.

Chanta Aluminum Unlocking a New Paradigm in Global Aluminum Profile Procurement

Wholesale and retail: Pipeline equipment, steel, hardware products, insulation materials, building materials, sports equipment, plastic products, rubber products, mechanical equipment and spare parts, import and export of goods (for projects that require approval according to law, business activities can only be carried out after approval by relevant departments).

Established in 2006, Shanghai Changzeng Metal Co., Ltd. Has decade years of experience in supplying and exporting in steel products, including Baogang, Angang Steel, Maanshan Steel. Our company mainly produce all kinds of steel products with good quality and low price in China. The total investment amounted to RMB10, 500, 000Yuan on producing Metallurgy, Mineral & Energy project.

Qingdao L&C Import & Export Co., Ltd. - Your Trusted Partner in Pipeline, Structural Steel, Hardware and Industrial Components

Our company was founded in 2000, is a comprehensive steel manufacturer integrating production, processing and trade all in one. The company's premises are located in the place of industry strategic importance in Shengfang of Hebei Province. Enjoying the convenient traffic and occupying an advantageous location, the company covers an area of 30, 000 square meters, construction area of 7, 500 square meters, more than 200 employees. Our company now owns 15 ERW steel pipe production lines and 6 special precision steel pipe production lines., and can reach the annual production capacity of 1000, 000 tons.

Shaanxi Shunchengtian Materials Co., Ltd. is an integrative company of industry and trading, professionally producing and customizing stainless steel cold and hot rolled materials, which usually are exported to Europe, Southeast Asia, Africa, North and South America, etc.