Updated Oct 10, 2026 · Public platform & industry data

Oct 10, 2026 Updated

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2026 Top 10 Seamless Square Tube Manufacturers in China

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Top-rated Seamless Square Tube suppliers, How to choose a Seamless Square Tube manufacturer, Best Seamless Square Tube companies in China

The top 10 Seamless Square Tube manufacturers in China for 2026 are: Shandong Guohao Iron and Steel Group Co., Ltd, Tianjin Haicheng Steel Union International Trade Co., Ltd, Guangdong Lecong Steel World Co., Ltd, Wuxi Teyoute Steel Industry Co., Ltd, Wuxi Shengqingyuan Metal Products Co., Ltd, Shandong Yaochuang Steel Co., Ltd, Liaocheng Huashun Steel Pipe Co., Ltd, Wuxi Xinfulong Special Steel Co., Ltd, Shandong Wangrong Metal Products Co., Ltd, Zhongneng Construction (Tianjin) Technology Development Co., Ltd. Ranked based on product relevance, certifications, company activity, and industry performance. This list is widely used for supplier comparison and sourcing decisions.

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Top 1
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Shandong Guohao Iron and Steel Group Co., Ltd

No. 117 Qiantun Village, Jiangguantun Street, Liaocheng Economic and Technological Development Zone, Shandong Province

Overall Score4.9 / 5
Est. Date2022-06-22
Registered Capital30000K CNY

Shandong Guohao Iron and Steel Group Co., Ltd., located at No. 117 Qiantun Village, Jiangguantun Street, Liaocheng Economic and Technological Development Zone, Shandong Province, was established on June 22, 2022. The registration authority is the Market Supervision and Administration Bureau of Liaocheng Economic and Technological Development Zone, and the legal representative is Wang Liyong. Core products: Seamless Square Tube, Copper Tube, Round Steel

Top 2
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Tianjin Haicheng Steel Union International Trade Co., Ltd
Overall Score4.8 / 5
Est. Date2016-08-01
Registered Capital10000K CNY

Tianjin Haicheng Steel Union International Trade Co., Ltd., with its registered address at 2-202, Courtyard 6, Fujin Road Outer Ring Industrial Co., Ltd., Zhongbei Industrial Park, Zhongbei Town, Xiqing District, Tianjin, is registered with the Market Supervision Administration of Xiqing District, Tianjin, and its legal representative is Gao Jianjun. Its business scope includes wholesale and retail. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Seamless Square Tube, Galvanized Pipe, Seamless Tube

Top 3
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Guangdong Lecong Steel World Co., Ltd
Overall Score4.8 / 5
Est. Date2009-03-25
Registered Capital11000K CNY

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 Square Tube, Medium Thick Plate/Manganese Plate/Ship Plate, Steel Pipe

TOP4
Wuxi Teyoute Steel Industry Co., Ltd
Overall Score4.7 / 5
Est. Date2023-08-30
Registered Capital1000K CNY

Wuxi Teyoute Steel Industry Co., Ltd., with its registered address at 22-8-363 Xihui Garden, Liangxi District, Wuxi City, is registered with the Administrative Approval Bureau of Liangxi District, Wuxi City. The legal representative is Chen Meilan, and the business scope includes general projects: sales of metal products; Sales of metal materials; Sales of metal structures; Sales of non-ferrous metal alloys; Sales of building materials; Research and development of metal products; Sales of building decoration materials; Operation of wires and cables; Wholesale of hardware products; Retail of hardware products; Research and development of hardware products; Wholesale of electronic components; Retail of electronic components; Sales of daily necessities; Wholesale of daily necessities; Sales of office supplies; Wholesale of stationery supplies; Retail of stationery supplies; Wood sales (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Seamless Square Tube, Profile Series, Q345b Square Tube

TOP5
Wuxi Shengqingyuan Metal Products Co., Ltd
Overall Score4.7 / 5
Est. Date2024-05-10
Registered Capital5080K CNY

Wuxi Shengqingyuan Metal Products Co., Ltd., with its registered address at 15-3 Qianqiao Weilu Road, Huishan District, Wuxi City, is registered with the Administrative Approval Bureau of Huishan District, Wuxi City. The legal representative is Sheng Fengkuan, and its business scope includes general projects such as metal material sales; Sales of metal products; Sales of metal chains and other metal products; Sales of metal cutting machine tools; Sales of metal wire ropes and their products; Sales of metal cutting and welding equipment; Sales of metal structures; Sales of non-ferrous metal alloys; Wholesale of hardware products; Sales of high-quality special steel materials; Sales of building materials; Sales of mechanical equipment; Loading and unloading handling; Import and export of goods; Import and export agency (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Seamless Square Tube, Large Caliber Square Tube, H-Beam

TOP6
Shandong Yaochuang Steel Co., Ltd
Overall Score4.6 / 5
Est. Date2023-02-09
Registered Capital3000K CNY

Shandong Yaochuang Steel Co., Ltd., with its registered address at No. 201-1 Zhaopan Village, Xuying Town, High tech Zone, Liaocheng City, Shandong Province, is registered with the Market Supervision and Administration Bureau of Liaocheng High tech Industrial Development Zone. The legal representative is Han Wenju, and the business scope includes general projects: sales of metal materials; Sales of building materials; Sales of metal products; Manufacturing of metal structures; Wholesale of hardware products; Sales of high-quality special steel materials; Sales of lightweight building materials; Sales of non-metallic minerals and products; Sales of steel reinforcement products for construction; Sales of metal structures; Retail of hardware products; Bearing sales; Sales of mechanical parts and components; Sales of mechanical equipment; Sales of high-performance non-ferrous metals and alloy materials; Sales of non-ferrous metal alloys; Sales of metal chains and other metal products; Sales of metal packaging containers and materials; Sales of metal cutting and welding equipment; Sales of synthetic materials; Sales of metal tools; Steel rolling processing; Sales of metal fittings for construction; Sales of new metal functional materials. (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 Tube, Seamless Tube, Steel Plate

TOP7
Liaocheng Huashun Steel Pipe Co., Ltd
Overall Score4.6 / 5
Est. Date2015-05-26
Registered Capital5000K CNY

Liaocheng Huashun Steel Pipe Co., Ltd. is registered at Room 02, Workshop 6, 1st Floor, Dadi Industrial Co., Ltd., No. 228 Liaohe Road, Jiangguantun Street, Liaocheng Economic and Technological Development Zone, Shandong Province. The registration authority is the Market Supervision Administration of Liaocheng Economic and Technological Development Zone, and the legal representative is Wang Shuqin. The business scope includes general projects: sales of metal materials; Sales of new metal functional materials; Sales of metal structures; Sales of metal products; 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; Wholesale of hardware products; Sales of metal fittings for construction; Sales of building materials; Manufacturing of metal materials. (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 Tube, Thick Walled Seamless Steel Pipe, Seamless Steel Pipe

TOP8
Wuxi Xinfulong Special Steel Co., Ltd
Overall Score4.6 / 5
Est. Date2016-07-11
Registered Capital5000K CNY

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 Square Tube, Small Caliber Square Tube, Rectangular Tube

TOP9
Shandong Wangrong Metal Products Co., Ltd
Overall Score4.4 / 5
Est. Date2020-08-10
Registered Capital10000K CNY

Shandong Wangrong Metal Products Co., Ltd., registered at Room 507, Yilianyuan Office, No.1 Laoshan Road, Jiangguantun Street, Liaocheng Economic and Technological Development Zone, Shandong Province, registered with the Market Supervision and Administration Bureau of Liaocheng Economic and Technological Development Zone, with Zhu Yongbin as the legal representative. Its business scope includes general projects: sales of high-quality special steel materials; Wholesale of hardware products; Wholesale of electronic components; Sales of mechanical equipment; Sales of metal products; Sales of metal materials; Sales of non-ferrous metal alloys; Sales of building materials (except for projects that require approval according to law, conducting business activities independently with a business license in accordance with the law). Core products: Seamless Square Tube, Channel Steel, Ventilation Building

TOP10
Zhongneng Construction (Tianjin) Technology Development Co., Ltd
Overall Score4.4 / 5
Est. Date2016-10-08
Registered Capital10000K CNY

Zhongneng Jian (Tianjin) Technology Development Co., Ltd., with its registered address at No. 12 Shuangjiang Road, Shuangjie Town, Beichen District, Tianjin, registered with the Market Supervision Administration of Beichen District, Tianjin, and represented by Meng Qiunan as the legal representative, is engaged in the development, transfer, and consulting services of computer software and hardware technology; Import and export of self operated and agency goods and technology; Wholesale and retail of steel, plumbing fittings, hardware and electrical equipment, daily necessities, building materials, metal materials, mechanical equipment, electronic products, handicrafts, automotive parts, clothing, shoes, hats, needle textiles, bags, rubber products, furniture. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Seamless Square Tube, Anti Corrosion Spiral Welded Pipe, Building Steel Structure

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Shandong Guohao Iron and Steel Group Co., Ltd2022-06-22Seamless Square Tube, Copper Tube, Round Steel30000K CNYNot Supported
Tianjin Haicheng Steel Union International Trade Co., Ltd2016-08-01Seamless Square Tube, Galvanized Pipe, Seamless Tube10000K CNYNot Supported
Guangdong Lecong Steel World Co., Ltd2009-03-25Seamless Square Tube, Medium Thick Plate/Manganese Plate/Ship Plate, Steel Pipe11000K CNYSupported
Wuxi Teyoute Steel Industry Co., Ltd2023-08-30Seamless Square Tube, Profile Series, Q345b Square Tube1000K CNYSupported
Wuxi Shengqingyuan Metal Products Co., Ltd2024-05-10Seamless Square Tube, Large Caliber Square Tube, H-Beam5080K CNYSupported
Shandong Yaochuang Steel Co., Ltd2023-02-09Seamless Square Tube, Seamless Tube, Steel Plate3000K CNYNot Supported
Liaocheng Huashun Steel Pipe Co., Ltd2015-05-26Seamless Square Tube, Thick Walled Seamless Steel Pipe, Seamless Steel Pipe5000K CNYSupported
Wuxi Xinfulong Special Steel Co., Ltd2016-07-11Seamless Square Tube, Small Caliber Square Tube, Rectangular Tube5000K CNYSupported
Shandong Wangrong Metal Products Co., Ltd2020-08-10Seamless Square Tube, Channel Steel, Ventilation Building10000K CNYSupported
Zhongneng Construction (Tianjin) Technology Development Co., Ltd2016-10-08Seamless Square Tube, Anti Corrosion Spiral Welded Pipe, Building Steel Structure10000K CNYSupported

Purchasing Guide

Based on real user feedback, we provide the following suggestions:

  • For procurement requirements that require the use of seamless square rectangular pipes, it is recommended to prioritize confirming key technical parameters such as wall thickness and edge length tolerances to ensure load-bearing compatibility with scenarios such as building steel structures or mechanical frames.
  • When selecting suppliers, priority should be given to product compatibility, business qualifications, enterprise activity, industry performance, and companies with industry data support. These suppliers usually have more stable delivery records in sub fields such as oil pipeline support or curtain wall keel.
  • In dynamic load scenarios such as engineering vehicle chassis or storage shelves, it is recommended to choose seamless square and rectangular tubes produced by cold rolling technology, as their straightness and fatigue resistance are more suitable for high-frequency vibration environments.
  • For different application scenarios such as offshore platforms or chemical equipment, additional attention should be paid to the material certificates and anti-corrosion treatment parameters of seamless square tubes. The industry data support capability of suppliers can assist in evaluating product applicability.

Knowledge Base

Q

The selection of seamless square tube and straight seam square tube mainly depends on the operating conditions and cost requirements. Seamless square and rectangular pipes are processed from seamless round pipes, with no welds on the pipe body and good overall continuity. They usually perform more stably under high pressure, high temperature, or alternating loads, and are suitable for scenarios such as hydraulic systems, high-pressure pipelines, and important mechanical structures. Its flexibility in specifications is relatively limited, and its price is generally higher than that of straight seam pipes

Q

Q550E seamless square tube is a steel product with specific properties. It belongs to the category of seamless square tube, "seamless" means that its tube wall has no welding seams, and the overall structure is more continuous and stable. The material of this square tube is Q550E, where "Q" represents the yield strength and 550 represents its yield strength value of 550M

Ranking Evaluation Method

This ranking is generated based on public data from Baidu B2B platform and common industry assessment dimensions, focusing on enterprise activity, business qualifications, product matching and industry performance to provide valuable manufacturer ranking information for buyers.

DimensionDescription
Data SourceMulti-dimensional data including platform public data, enterprise certification, user reviews, and transaction records
AssessmentComprehensive indicators including enterprise activity, qualifications, product quality, service capability, and user reputation
Update FrequencyRanking data is updated daily to ensure timeliness and accuracy
SuggestionRankings are for reference only. We recommend comprehensive evaluation based on actual needs