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Hongguan Steel Group Co. Ltd. supplies carbon steel square and rectangular tubes in grades Q195, Q235, and Q345, with chemical compositions and mechanical properties aligned to international equivalents like SS400 and S235JR. The tubes are welded hollow sections, offered in outer dimensions from 15x15 mm to 1000x1000 mm for square tubes and 10x20 mm to 700x300 mm for rectangular tubes, with wall thicknesses ranging from 0.6 mm to 25 mm. Lengths are available from 5.8 m to 12 m, catering to structural and industrial applications.
The material’s chemical composition includes carbon (0.06 - 0.12% for Q195), manganese (0.25 - 0.50%), and trace elements like silicon, sulfur, and phosphorus, which are controlled to ensure weldability and formability. Tensile strength for Q195 is 315 - 430 MPa, with a yield strength of 195 MPa and elongation of 33%, providing a balance of strength and ductility. Surface treatments include black, pre-galvanized (60 - 150 g/m²), oiled, powder coating, or hot-dipped galvanized (200 - 400 g/m²), with end finishes available as plain, beveled, or threaded.
These tubes are used in construction frameworks, scaffolding, machinery structures, agricultural equipment, water and gas pipelines, greenhouses, and furniture manufacturing. The supplier’s location in Jinan, Shandong, provides access to major Chinese ports, and the tubes are packed in bundles with steel strips and seaworthy packaging. Buyers can request custom designs, including necking down, punching holes, or adding fittings like elbows.
| Material Grades | Q195, Q235, Q345 |
| Equivalent Grades | Q195 similar to A283 GR.B, SS330; Q235 similar to A283 GR.D, S235JR; Q345 similar to A737 GR.B, SS400 |
| Outer Dimensions (Square) | 15x15 mm to 1000x1000 mm |
| Outer Dimensions (Rectangular) | 10x20 mm to 700x300 mm |
| Wall Thickness | 0.6 mm to 25 mm |
| Length | 5.8 m to 12 m |
| Tensile Strength (Q195) | 315 - 430 MPa |
| Yield Strength (Q195) | 195 MPa |
| Elongation (Q195) | 33% |
| Surface Treatment | Black, pre-galvanized (60 - 150 g/m²), hot-dipped galvanized (200 - 400 g/m²), oiled, powder coating |
| End Finish | Plain, beveled, threaded with sockets/coupling and plastic caps |
| Packaging | Bundles with steel strips, seaworthy packaging |
| Inspection | Chemical composition and mechanical properties testing, hydrostatic test, dimensional and visual inspection, nondestructive inspection |
Hongguan Steel Group Co. Ltd. is located in the Comprehensive Bonded Zone, Jinan, Shandong Province, at 102-b5 Supporting Office Area of Customs Supervision Warehouse, Aerospace Avenue. The company operates as a harbor-tier supplier, indicating a verified trade presence, though its response rate to inquiries is not currently recorded. The supplier specializes in carbon steel square and rectangular tubes, serving industries like construction, agriculture, and machinery manufacturing.
The supplier’s profile does not list certifications, production capacity, or client references, so buyers should confirm these details directly. The company’s location in a bonded zone may offer logistics advantages for export, and its focus on hollow sections suggests expertise in structural steel products. All production processes are stated to follow ISO 9001:2000 standards, but buyers should request documentation to verify compliance.
Carbon steel square and rectangular tubes are widely used in construction, infrastructure, and mechanical manufacturing. Available in grades Q195, Q235, and Q345 (similar to SS400 and S235JR), these welded hollow sections offer excellent strength-to-weight ratios for structural frameworks, scaffolding, and furniture production. As a core commodity in global steel trade, rectangular steel tubes are sourced from major mills in China, India, and Turkey, with pricing closely tied to raw material indices and freight costs.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Before ordering, verify the exact grade, dimensions, and surface treatment to ensure they match your project requirements. Confirm the mechanical properties (tensile strength, yield strength, elongation) and whether the tubes meet the relevant standards (e.g., GB/T, ASTM, or EN). Request mill test certificates and inspection reports to validate the material’s compliance with your specifications.
Discuss logistics details, including the port of loading, Incoterms (FOB, CFR, or CIF), and packaging preferences. Square and rectangular tubes are typically shipped in bundles, so ensure the supplier can accommodate your handling and unloading requirements. Clarify lead times, as production schedules may vary based on order volume and current demand.
Inspect the first shipment for dimensional accuracy, surface finish, and mechanical properties. Use calipers to verify outer dimensions and wall thicknesses, and consider third-party testing for tensile strength and chemical composition. Check that the surface treatment (e.g., galvanized coating) meets the specified weight per square meter to ensure corrosion resistance. Request detailed quality control documentation for your records.
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When sourcing Carbon Steel Rectangular Square Tube Pipe for your business, securing the right balance of quality and cost is essential. Hongguan Steel Group Co. Ltd., a verified supplier based in China, offers this product with key specifications including Q195 (similar to A283 GR.B, SS330), Q235 (similar to A283 GR.D, S235JR), Q345 (similar to A737 GR.B, SS400), Square and Rectangular (Hollow Section), and Square: 20x20mm to 400x400mm; Rectangular: 30x20mm to 500x400mm; Wall thickness: 1.5mm to 20mm. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $450750/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7306.61, making it a staple in the Steel Pipes sector with strong demand from importing countries worldwide.
Importing Carbon Steel Rectangular requires careful attention to shipping logistics, customs compliance, and secure payment terms. Hongguan Steel Group Co. Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 7306.61 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading import export marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this Carbon Steel Rectangular has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Steel Pipes category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Importing Carbon Steel Rectangular requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 7306.61 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for Carbon Steel Rectangular Square Tube Pipe from Hongguan Steel Group Co. Ltd. is $450750/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Hongguan Steel Group Co. Ltd. through EximNext.
The supplier, Hongguan Steel Group Co. Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Carbon Steel Rectangular. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, Carbon Steel Rectangular Square Tube Pipe is classified under HS Code 7306.61. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import Carbon Steel Rectangular from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Hongguan Steel Group Co. Ltd.. Ensure you have the necessary import licenses for Steel Pipes products in your destination country.
Yes, Hongguan Steel Group Co. Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
The key specifications for Carbon Steel Rectangular Square Tube Pipe supplied by Hongguan Steel Group Co. Ltd. include Q195 (similar to A283 GR.B, SS330), Q235 (similar to A283 GR.D, S235JR), Q345 (similar to A737 GR.B, SS400), Square and Rectangular (Hollow Section), and Square: 20x20mm to 400x400mm; Rectangular: 30x20mm to 500x400mm; Wall thickness: 1.5mm to 20mm. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
Hongguan Steel Group Co. Ltd. offers Carbon Steel Rectangular with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Carbon Steel Rectangular is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Hongguan Steel Group Co. Ltd. through our platform.
Hongguan Steel Group Co. Ltd. maintains international quality certifications. These ensure that the Carbon Steel Rectangular meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Hongguan Steel Group Co. Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Hongguan Steel Group Co. Ltd..
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