China is one of the world's major manufacturing bases for square hollow sections (SHS) and rectangular hollow sections (RHS). Chinese manufacturers supply structural steel tubes for construction, infrastructure, machinery, industrial facilities, and renewable energy projects.

However, choosing the right manufacturer involves more than comparing prices. Buyers should evaluate production capabilities, dimensional accuracy, material grades, international standards, quality inspection, and export experience.

Below is a list of 10 Chinese manufacturers and suppliers worth considering when sourcing square hollow section steel tubes.

Top 10 Square Hollow Section Manufacturers in China

1. ALLLAND Steel Pipe

ALLLAND Steel Pipe is a professional steel pipe manufacturer in China with more than 25 years of manufacturing experience. The company supplies structural steel pipes, including square and rectangular hollow sections, for construction, infrastructure, and industrial applications.

Its square and rectangular hollow sections cover sizes from 20×20 mm to 500×500 mm, with wall thicknesses ranging from 1 mm to 50 mm. Customers can specify dimensions, steel grades, lengths, and surface treatments according to project requirements.

ALLLAND's major manufacturing strengths include:

• Multiple production processes, including ERW, LSAW, SSAW, and seamless steel pipe manufacturing.

• Annual production capacity of approximately 200,000 tons.

• A dedicated quality control system covering raw materials, manufacturing, dimensional inspection, and final testing.

• International standards and certifications, including API, ASTM, EN, and ISO-related requirements.

• Third-party inspection support from organizations such as SGS, BV, and TÜV.

• Export experience supplying steel pipe products for international infrastructure and industrial projects.

With integrated manufacturing and inspection capabilities, ALLLAND can support both standard structural steel tube orders and customized project requirements.

2. Tianjin Yuantai Derun Pipe Manufacturing Group

Tianjin Yuantai Derun is one of China's well-known manufacturers specializing in square and rectangular steel tubes.

The company operates extensive ERW production facilities and supplies black and galvanized hollow sections for structural engineering, construction, and industrial applications.

Its product range includes square tubes from 20×20 mm to 500×500 mm and rectangular tubes in various dimensions. It manufactures products according to standards such as ASTM A500, EN 10219, and JIS G3466.

3. Shandong Xin Jiyuan Special Steel Tube Co., Ltd.

Shandong Xin Jiyuan specializes in hollow structural sections, including SHS, RHS, and circular hollow sections.

The company offers a broad range of specifications, structural steel grades, and customized products. Its product portfolio includes conventional hollow sections and specialized sharp-corner rectangular tubes.

It is worth considering for buyers looking for customized structural profiles and non-standard section designs.

4. Tianjin Lefin Industrial Co., Ltd.

Tianjin Lefin Industrial supplies square and rectangular hollow sections for international construction and engineering markets.

Its product range includes cold-formed and hot-finished hollow sections manufactured to standards such as EN 10219, EN 10210, ASTM A500, and JIS G3466.

The company offers different dimensions, wall thicknesses, and steel grades, making it a potential supplier for structural steel projects.

5. Tianjin Xinyue Steel Group

Tianjin Xinyue Steel Group is a steel pipe manufacturer and supplier with production facilities in Tianjin and Hebei, China.

Its product portfolio covers ERW, SSAW, LSAW, seamless steel pipes, and square and rectangular hollow sections.

The company serves construction, infrastructure, and industrial customers requiring multiple types of steel pipe products from one supplier.

6. Sino East Steel Group

Sino East Steel Group supplies square and rectangular structural steel tubes for construction, machinery framing, curtain walls, and other industrial applications.

Its product offerings include cold-formed hollow sections in black, painted, oiled, and galvanized finishes.

The company provides structural steel tubes in various sizes and grades, including products manufactured to ASTM A500 and EN 10219 requirements.

7. Eastern Steel Manufacturing Co., Ltd.

Eastern Steel Manufacturing supplies hollow structural sections in square, rectangular, and circular profiles.

Its product range includes different dimensions and material grades for structural engineering and construction applications.

The company also offers products manufactured according to international standards, including ASTM A500, EN 10219, EN 10210, and JIS G3466.

8. Tianjin Brisk Metalwork Co., Ltd.

Tianjin Brisk Metalwork specializes in steel structures, steel tubes, and related structural products.

Its manufacturing portfolio includes square, rectangular, and circular hollow sections, as well as welded steel pipes and galvanized pipes.

The company also provides steel structure solutions for industrial facilities, bridges, warehouses, and infrastructure projects.

9. Laiwu Fangyuan Metal Products Co., Ltd.

Laiwu Fangyuan Metal Products is a manufacturer of square and rectangular steel tubes, including cold-finished and hot-finished hollow sections.

Its product portfolio includes welded and seamless hollow sections in various dimensions and structural steel grades.

The company serves buyers requiring structural steel products manufactured to standards such as EN 10210, EN 10219, ASTM A500, and AS/NZS 1163.

10. Tianjin Xinyuancheng Steel Trade Co., Ltd.

Tianjin Xinyuancheng Steel Trade Co., Ltd. is another company to consider when sourcing steel products from China's Tianjin steel industry.

When evaluating this type of supplier, international buyers should confirm whether the quoted hollow sections are manufactured in-house or sourced from partner mills. Production traceability, inspection documentation, and actual manufacturing capacity should be checked before placing large-volume orders.

How to Choose a Reliable Square Hollow Section Manufacturer in China

Selecting a suitable manufacturer requires evaluating several technical and commercial factors.

1. Manufacturing Capabilities

Check the manufacturer's actual production range, including square dimensions, wall thickness, length, and available manufacturing processes. A supplier should be able to demonstrate that its equipment can meet the required specifications.

2. Material Grades and Standards

Common standards for structural hollow sections include:

• ASTM A500/A500M Cold-formed welded and seamless carbon steel structural tubing.

• EN 10219 Cold-formed welded structural hollow sections.

• EN 10210 Hot-finished structural hollow sections.

• JIS G3466 Carbon steel square and rectangular tubes for general structure.

Always confirm that the selected material grade and manufacturing route comply with the project specification.

3. Quality Inspection and Certification

A reliable manufacturer should provide material test certificates, dimensional inspection records, and relevant mechanical test results. Third-party inspection can also be arranged when required by the buyer.

4. Export and Project Experience

For international procurement, consider production lead times, export packaging, shipping arrangements, documentation, and the manufacturer's experience handling project-based orders.

Why Consider ALLLAND Steel Pipe?

Among the manufacturers listed above, ALLLAND offers an integrated steel pipe manufacturing background that is particularly relevant to buyers handling multiple structural and pipeline requirements.

Its advantages include a broad steel pipe product portfolio, customized production capabilities, established quality inspection procedures, and experience serving international engineering projects.

Rather than focusing only on standard square tube sizes, ALLLAND can coordinate different steel pipe manufacturing processes and product specifications within one supply chain.

For buyers sourcing square hollow sections for building structures, industrial facilities, infrastructure, or customized engineering applications, this manufacturing flexibility can help simplify procurement and supplier coordination.

Looking for a reliable square hollow section manufacturer in China?

Contact ALLLAND Steel Pipe to discuss your required dimensions, wall thickness, steel grade, applicable standard, surface treatment, and project quantity. Our team can provide product specifications and manufacturing solutions based on your procurement requirements.

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Energy Geotechnics, Engineering Geology, Caisson Foundations, Oil & Gas

Keywords

business, steel pipe, carbon steel pipes, hollow section, shs, square hollow section