2026 Top 10 Seamless Square Connection Manufacturers in China

Jiangsu Zhongtonglian Dragon Metal Products Co., Ltd

Jiangsu Zhongtonglian Long Metal Products Co., Ltd., with its registered address at Room 3368, No. 32 Chengnan Road, Xinwu District, Wuxi City, is registered with the Wuxi High tech Industrial Development Zone (Xinwu District, Wuxi City) Data Bureau. The legal representative is Wang Lianlian, and the business scope includes general projects: sales of metal products; Sales of metal materials; Sales of non-ferrous metal alloys; Sales of high-performance non-ferrous metals and alloy materials; Wholesale of hardware products; Sales of building decoration materials; Sales of metal ores; Sales of mechanical equipment; Installation services for ordinary mechanical equipment; Sales of mechanical parts and components; Sales of chemical products (excluding licensed chemical products); Sales of building materials; Wholesale of automotive spare parts; Sales of office supplies; Electronic product sales; Wholesale of computer software, hardware, and auxiliary equipment; Sales of rubber products; Sales of plastic products; Sales of daily necessities (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law). Core products: Seamless Square Connection, Stainless Steel Plate, Stainless Steel Pipe

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 Square Connection, Low Alloy Square Tube, Low Alloy Welded Pipe

Tianjin Laidi Technology Development Co., Ltd

Tianjin Laidi Technology Development Co., Ltd., with its registered address at No. 2, Nanqu Expressway Auxiliary Road, Jinghai Economic Development Zone, Tianjin, registered with the Jinghai District Market Supervision and Administration Bureau of Tianjin, and represented by Wang Fengqin as its legal representative. Its business scope includes the development, transfer, and consulting services of metal material technology; Manufacturing and sales of electronic products, mechanical equipment, motors and accessories; Engage in import and export business permitted by national laws and regulations; Processing, manufacturing, and sales of metal products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Seamless Square Connection, Steel Plate, Spiral Tube

Foshan Weiye Iron and Steel Co., Ltd

Foshan Weiye Iron and Steel Co., Ltd., with its registered address located at 3rd Floor, No. 05 Steel World Avenue, D1 District, Lecong Town, Shunde District, Foshan City, Guangdong Province, China. The registration authority is the Market Supervision Administration of Shunde District, Foshan City, and the legal representative is Zhang Enyuan. Its business scope includes general projects such as metal material sales; Sales of building materials; Sales of metal products; Sales of metal structures. (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 Square Connection, Lattice Column, Steel Plate

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 Square Connection, Gear, Oxygen Lance

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 Square Connection, H-Beam, Welded Pipe

Tianjin Hualichuangtong Steel Trading Co., Ltd

Tianjin Hualichuangtong Iron and Steel Trading Co., Ltd., with its registered address at Zone B, No. 1 Shuangchen West Road, Shuangjie Town, Beichen District, Tianjin, is registered with the Market Supervision Administration of Beichen District, Tianjin. The legal representative is Yan Jinglei, and its business scope includes wholesale and retail of metal materials, hardware and electrical equipment, chemical products (excluding hazardous chemicals and precursor drugs), office supplies, and daily necessities. (If the above business scope involves industry licenses, operate within the valid period with the license certificate. If there are special monopoly regulations in the country, handle them according to the regulations.). Core products: Seamless Square Connection, Stainless Steel Manifold, C-Shaped Steel