2026 Top 10 Seamless Black Square Pipe Manufacturers in China

Wuxi Xinfulong Special Steel Co., Ltd

Wuxi Xinfulong Special Steel Co., Ltd. is registered in Xizhang Community, Qianqiao Street, Huishan District, Wuxi City. The registration authority is the Administrative Approval Bureau of Huishan District, Wuxi City, and the legal representative is Fu Liang. Its business scope includes the sales of metal materials and their products, building materials, decorative materials, general machinery and accessories, hardware products, electrical machinery and equipment, chemical products and raw materials (excluding dangerous goods). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Seamless Black Square Pipe, Small Caliber Square Tube, Rectangular Tube

Wuxi Yuntu Pipe Industry Co., Ltd

Wuxi Yuntu Pipe Industry Co., Ltd. is registered at Room C461, No. 32 Chengnan Road, Xinwu District, Wuxi City. The registration authority is the Administrative Approval Bureau of Wuxi National High tech Industrial Development Zone (Xinwu District, Wuxi City), and the legal representative is Kang Mengxue. The business scope includes general projects: sales of metal materials; Sales of building materials; Sales of mechanical equipment; Wholesale of hardware products; Sales of mechanical parts and components; Internet sales (except for the sale of goods that need permission) (except for items that need approval according to law, independently carry out business activities according to law with the business license). Core products: Seamless Black Square Pipe, Large Caliber Square Tube, Low Alloy Square Tube

Tianjin Xintian Steel Heavy Industry Co., Ltd

Tianjin Xintian Steel Heavy Industry Co., Ltd., with its registered address at No. 12 Shuangjiang Road, Shuangjie Town, Beichen District, Tianjin, is registered with the Market Supervision Administration of Beichen District, Tianjin. The legal representative is Guo Lei, and its business scope includes general projects such as steel rolling processing; General equipment manufacturing (excluding special equipment manufacturing); General cargo warehousing services (excluding projects requiring permits and approvals such as hazardous chemicals); Internet of Things technology services; Research and development of Internet of Things technology; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Environmental consulting services; Electronic product sales; Sales of instruments and meters; Furniture sales; Needle textile sales; Sales of mechanical equipment; Sales of metal products; Wholesale of hardware products; Retail of hardware products; Wholesale of automotive spare parts; Retail of automotive spare parts; Operation of wires and cables; Luggage sales; Import and export of goods; Technology import and export; Sales of metal materials; Sales of steel reinforcement products for construction. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Seamless Black Square Pipe, European Standard Tube, Galvanized Pipe

Shandong Longxin Iron and Steel Co., Ltd

Shandong Longxin Iron and Steel Co., Ltd., with its registered address at the first house on the north side of the auxiliary staircase of the Information Building in the Modern Logistics Park, Jingshi West Road, Xingfu Street, Huaiyin District, Jinan City, Shandong Province, is registered with the Market Supervision and Administration Bureau of Huaiyin District, Jinan City. The legal representative is Zhang Bo, and the business scope includes wholesale and retail of steel, metal products, building materials, decorative materials, chemical products (excluding dangerous goods), electromechanical equipment, hardware and electrical equipment, medical equipment, electronic products, plastic products, glass products, needle textiles, office supplies, computer software and hardware and auxiliary equipment, packaging materials, clothing, shoes and hats, leather products, daily necessities, lighting fixtures, social public safety equipment, automotive parts, paper products, sanitary ware; Professional contracting for building decoration and renovation engineering; General contracting for construction projects; Specialized contracting for steel structure engineering; General contracting of municipal public works construction; General contracting of highway engineering construction; Professional contracting for waterproofing, anti-corrosion, and insulation engineering; Subcontracting of construction labor services. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Seamless Black Square Pipe, Stainless Steel Plate, H-Beam

Guangdong Lecong Steel World Co., Ltd

Guangdong Lecong Steel World Co., Ltd., with its registered address at 1st Floor, Building 1, Guotong Chuangke Park, No.1 Gangfu Road, Lecong Town, Shunde District, Foshan City, Guangdong Province, is registered with the Market Supervision and Administration Bureau of Shunde District, Foshan City. The legal representative is Zheng Jiabin, and the business scope includes general projects such as non residential real estate leasing; Housing rental; Engaging in investment activities with self owned funds; Domestic trade agency; Advertising production; Advertising design and agency; Advertising release; Conference and exhibition services; Domestic freight forwarding agent; General cargo warehousing services (excluding projects requiring permits and approvals such as hazardous chemicals). (Except for projects that require approval according to law, business activities can be carried out independently based on the business license.) Licensed project: Road freight transportation (excluding dangerous goods). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. The specific business projects shall be subject to the approval documents or licenses issued by the relevant departments.). Core products: Seamless Black Square Pipe, Color Steel Tile, Water Heating Valve

Jingang Qicai (Shandong) Metal Materials Co., Ltd

Jingang Qicai (Shandong) Metal Materials Co., Ltd., with its registered address at No. 25 Yanlao Village, Jiangguantun Street, Liaocheng Economic and Technological Development Zone, Shandong Province, is registered with the Market Supervision and Administration Bureau of Liaocheng Economic and Technological Development Zone. The legal representative is Zhou Liping, and its business scope includes general projects such as metal material sales; Sales of metal products; Sales of metal structures; Sales of non-ferrous metal alloys; Sales of high-performance non-ferrous metals and alloy materials; Sales of high-quality special steel materials; Retail of hardware products; Sales of building materials; Sales of mechanical equipment; Sales of mechanical parts and components; Sales of forgings and powder metallurgy products; Sales of plastic products; Sales of rubber products; Sales of mechanical and electrical equipment. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Seamless Black Square Pipe, Brass, Seamless Tube

Xinjiang Xinyoutai Steel Co., Ltd

Room 17, 2nd Floor, Building 7, No. 119 Tiejin Street, Toutunhe District, Urumqi Economic and Technological Development Zone, Xinjiang (China (Xinjiang) Pilot Free Trade Zone)

Xinjiang Xinyutai Iron and Steel Co., Ltd. is located at Room 17, 2nd Floor, Building 7, No. 119 Tiejin Street, Toutunhe District, Urumqi Economic and Technological Development Zone, Xinjiang (China (Xinjiang) Pilot Free Trade Zone). It was established on May 13, 2026, and its registered authority is the Market Supervision and Administration Bureau of Urumqi Economic and Technological Development Zone (Toutunhe District, Urumqi). The legal representative is Sun Qibing. Core products: Seamless Black Square Pipe, Stainless Steel Angle Bar, Seamless Steel Pipe