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The round tubes offered by JQF Group are welded carbon‑steel sections supplied in the S235 and S355 grades. Both grades conform to international ASTM and EN standards for structural steel. The tubes are shipped in bulk with pricing normally quoted per metric ton on a CIF or FOB basis. Supplier data specifies that lengths can be customised to project requirements.
S235 provides a minimum yield strength of 235 MPa while S355 reaches 355 MPa, making them suitable for load‑bearing frames. In the market, typical diameters run from 20 mm to 200 mm with wall thicknesses between 2 mm and 12 mm, tolerances usually ±0.2 mm for diameter and ±0.1 mm for thickness. These dimensions align with the EN 10210 and ASTM A53 specifications widely adopted in construction and infrastructure projects. Surface condition is generally a mill finish, with optional hot‑dip galvanising for corrosion protection.
Primary buyers include civil‑engineering contractors, bridge fabricators and heavy‑equipment manufacturers. Trade terms mention flexible minimum order quantities, palletised packaging, and payment via L/C or T/T upon shipment. Importers should request the supplier’s ISO and SGS certificates together with a mill test report to confirm compliance.
| Material | Carbon Steel (S235 / S355) |
| Grade | S235, S355 (standard) |
| Standard | ASTM A53, EN 10210 (typical) |
| Diameter Range | 20 mm - 200 mm (typical) |
| Wall Thickness | 2 mm - 12 mm (typical) |
| Length | Custom lengths up to 12 m (supplier offers) |
| Surface Finish | Mill finish, optional hot‑dip galvanising (typical) |
| Tensile Strength | ≥ 370 MPa for S235, ≥ 470 MPa for S355 (typical) |
| Weight per metre | Approx. 1.5 kg/m (typical for 50 mm × 4 mm) |
| Packaging | Bundled and strapped on pallets (typical) |
JQF Group is listed as an imported‑tier supplier based in Nanjing, Jiangsu Province, China, at Block 1, Changhong Road, Yuhuatai District. The company holds a harbor trust tier, indicating verified banking and trade credentials, though its response rate is currently recorded as 0 %.
The supplier focuses on bulk export of carbon‑steel round tubes and states compliance with ISO and SGS quality systems. No additional corporate history or client list is provided in the listing.
Welded carbon steel round tubes are essential structural components widely used in construction, infrastructure, and engineering projects. Available in standard dimensions with S235/S355 carbon steel grades, these tubes comply with international standards including ASTM and EN. EximNext supplies these tubes in bulk for import/export, with pricing typically quoted per metric ton on a CIF or FOB basis.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Before placing an order, verify the exact steel grade, diameter, wall thickness and length required for your project. Request the mill test report and the ISO/SGS certificates to confirm that the material meets ASTM A53 and EN 10210 standards. Confirm any special surface treatments such as galvanising in writing.
Discuss logistics early by agreeing on the incoterm, typically FOB Nanjing or CIF Shanghai, and the preferred shipping port. Lead times are usually quoted after the order is finalised; ask the supplier for an estimated schedule based on the custom length and quantity. Payment is commonly arranged via a confirmed L/C at sight or T/T after shipment, so ensure your bank can accommodate these terms.
Arrange a third‑party inspection at the supplier’s factory or at the loading port to verify dimensions, mechanical properties and surface condition. Ensure the inspection report references the mill test data and any applicable certifications. Proper documentation, including a commercial invoice, packing list and certificate of origin, will smooth customs clearance upon arrival.
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When sourcing Round Tubes for your business, securing the right balance of quality and cost is essential. JQF Group, a verified supplier based in China, offers this product with key specifications including S235JR, Q235, ASTM A500 Grade B / Structural Carbon Steel, Carbon Steel with max 0.25% C, max 1.4% Mn, trace Si, S, P, and OD 21.3mm - 609.6mm, Wall Thickness 2.0mm - 20.0mm, Length 6m / 12m (custom lengths available). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $650850./Unit and manage bulk orders with a minimum order quantity (MOQ) of 1 Unit. This product is actively traded under HS Code 7306.30, making it a staple in the Steel Tubes sector with strong demand from importing countries worldwide.
Importing Round Tubes requires careful attention to shipping logistics, customs compliance, and secure payment terms. JQF Group 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 7306.30 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 B2B marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this Round Tubes 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 Tubes category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Importing Round Tubes 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 7306.30 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 Round Tubes from JQF Group is $650850./Unit 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 JQF Group through EximNext.
The supplier, JQF Group, has set a Minimum Order Quantity (MOQ) of 1 Unit for Round Tubes. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, Round Tubes is classified under HS Code 7306.30. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import Round Tubes from China, negotiate shipping terms (FOB, CIF, or EXW) directly with JQF Group. Ensure you have the necessary import licenses for Steel Tubes products in your destination country.
Yes, JQF Group 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 Round Tubes supplied by JQF Group include S235JR, Q235, ASTM A500 Grade B / Structural Carbon Steel, Carbon Steel with max 0.25% C, max 1.4% Mn, trace Si, S, P, and OD 21.3mm - 609.6mm, Wall Thickness 2.0mm - 20.0mm, Length 6m / 12m (custom lengths available). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
JQF Group offers Round Tubes with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Round Tubes is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from JQF Group through our platform.
JQF Group maintains international quality certifications. These ensure that the Round Tubes 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. JQF Group 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 JQF Group.
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