Agriculture›
Apparel and fashion accessories›
Construction & real estate›💡Electronic & Electrical›🍎Food & Beverages›🛋️Home furnishing & supplies›⚗️Industrial goods & chemical›🪨Minerals & metals›📦Miscellaneous›Agriculture›Apparel and fashion accessories›Construction & real estate›💡Electronic & Electrical›🍎Food & Beverages›🛋️Home furnishing & supplies›⚗️Industrial goods & chemical›🪨Minerals & metals›📦Miscellaneous›
Seamless square tube
The seamless square tube offered by Leading Fly Steel Pipe Co., Ltd. is a carbon‑steel hollow section with outer dimensions ranging from 40 × 40 mm to 800 × 800 mm and wall thicknesses between 4 mm and 40 mm. It conforms to GB/T3054‑2002, GB/T6728‑2002, GB/T6725‑2002, GB/T3094‑2000, JIS G178‑2005, JIS G3466, ASTM A500 and DIN EN10210 standards. Lengths are supplied in 5.8 m to 11.8 m cuts, or can be cut to buyer requirements. The material grades include Q235 and Q345 as defined in the applicable standards.
Carbon‑steel grades Q235 and Q345 are standard for structural applications, providing tensile strengths of roughly 370 MPa and 470 MPa respectively. The cold‑drawn manufacturing process yields tight dimensional tolerances, typically ±0.5 mm for outer dimensions and ±0.2 mm for wall thickness. Surface treatment is offered as painting or oil coating, and bundles are packed with steel strips for protection during transport. These characteristics match the usual specifications for construction‑grade square hollow sections used worldwide.
The tubes are widely used in construction frameworks, steel structures, shipbuilding and chemical‑machinery frames. Importers usually order in bulk, with a minimum order of 10 metric tonnes, and arrange payment by L/C or T/T. Delivery is quoted at 15‑30 days after receipt of deposit, and trade terms such as FOB, CIF or CFR can be negotiated. Prospective buyers should confirm exact dimensions, surface finish and incoterm preferences with the supplier before placing an order.
| Outer Dimension (OD) | 40‑800 mm (square) |
| Wall Thickness (WT) | 4‑40 mm |
| Length | 5.8‑11.8 m or custom cut |
| Material Grade | Carbon Steel Q235 / Q345 |
| Standards | GB/T3054‑2002, GB/T6728‑2002, GB/T6725‑2002, GB/T3094‑2000, JIS G178‑2005, JIS G3466, ASTM A500, DIN EN10210 |
| Minimum Order Quantity | 10 MT |
| Typical Packing | Painted or oil‑coated, bundled by steel strip |
| Typical Dimensional Tolerance | ±0.5 mm for OD, ±0.2 mm for WT (typical) |
| Typical Surface Roughness | Ra ≤ 1.6 µm (typical) |
| Typical Tensile Strength | 400‑550 MPa for Q235, 470‑630 MPa for Q345 (typical) |
Leading Fly Steel Pipe Co., Ltd. is located in Cangzhou, Hebei Province, China (postal code 061000). The company is listed with a harbour‑level trust tier, although its response rate is currently recorded as 0.00 and average response time is not available.
The supplier specialises in cold‑drawn seamless steel hollow sections, offering square tubes that meet a broad selection of international standards. Their product catalogue includes carbon‑steel grades Q195‑Q215, Q345 and various alloy steels, but the current listing focuses on Q235/Q345 square tubes. No additional corporate history, production capacity or client references are provided in the source data.
Seamless square tubes are widely used in structural engineering, construction frameworks, and machinery manufacturing due to their high strength-to-weight ratio and excellent load-bearing capacity. These square hollow sections are available in outer dimensions from 40x40mm up to 800x800mm with wall thicknesses of 4-40mm, and comply with GB/T, JIS, ASTM and DIN international standards. Ideal for global import-export trade, they are supplied in standard lengths of 5.8-11.8m or customized to buyer requirements.
People Also Search For
| 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 |
Sourcing Seamless square tube from Leading Fly Steel Pipe Co., Ltd. - China Import Guide
Before placing an order, verify the exact outer dimensions, wall thickness, material grade and the applicable standard certificates. Request the mill test report and confirm that the surface treatment (paint or oil) matches your project requirements. Clarify any custom length needs and ensure the supplier can meet the specified tolerances.
Logistics for this product typically involve bulk shipping from the port of Tianjin or Qingdao. The quoted delivery window of 15‑30 days follows receipt of a deposit, and the supplier lists FOB, CIF and CFR as possible incoterms. Payment methods mentioned are L/C and T/T; negotiate the preferred term and confirm any advance payment requirements before signing the contract.
Quality assurance should include visual inspection of the coating, dimensional checks against the agreed tolerances, and verification of tensile strength through a certified test report. Arrange third‑party inspection if required by your import regulations, and obtain the original certificates of conformity for the relevant GB/T, JIS, ASTM or DIN standards. Proper documentation will streamline customs clearance and reduce the risk of non‑conforming deliveries.
Active buying requirements from importers looking for Similar products
United Arab Emirates
Kazakhstan
Saudi Arabia
Pakistan
United Kingdom
India- ✓Who's importing it
- ✓What prices they're paying
- ✓Which ports they're moving through
Related Products & Suppliers
Compare alternatives, find similar products and connect with suppliers
Similar Products
Related Products
.jpg.png)
Trending in this Category
Top Suppliers for this Product
More from Parent Category
Browse Seamless square tube — Top Products
21 listingsTop Suppliers for Seamless square tube
30 suppliersBuy Seamless Square Tube in Bulk — Supplier in China
When sourcing Seamless Square Tube for your business, securing the right balance of quality and cost is essential. Leading Fly Steel Pipe Co., Ltd., a supplier based in China, offers this product with key specifications including ASTM A500 Grade B/C; GB/T 6728 / GB/T 6725 equivalent; JIS G3466; DIN EN102, Carbon steel, C content typically 0.20-0.30%, Mn 0.60-1.60% (grade-dependent), and Square: 40x40mm to 800x800mm; Wall Thickness: 4-40mm; Length: 5.8-11.8m or custom. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $600800/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. 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.
Seamless Square Tube Specifications, Trade Terms & Pricing
Importing Seamless Square Tube requires careful attention to shipping logistics, customs compliance, and secure payment terms. Leading Fly Steel Pipe 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 7306.30 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 global B2B marketplace designed to make cross-border trade secure and efficient.
About Leading Fly Steel Pipe Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this Seamless Square Tube for business registration and quality documents before ordering. 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 manufacturers and exporters across 200+ countries. Explore similar products in the Steel Tubes category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Seamless Square Tube — Shipping, Logistics & Customs
Importing Seamless Square Tube 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).
Frequently Asked Questions About Seamless Square Tube
What is the wholesale price of Seamless Square Tube?
The current listed wholesale price for Seamless Square Tube from Leading Fly Steel Pipe Co., Ltd. is $600800/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 Leading Fly Steel Pipe Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Seamless Square Tube?
The supplier, Leading Fly Steel Pipe Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Seamless Square Tube. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Seamless Square Tube?
For international shipping and customs clearance, Seamless Square Tube is classified under HS Code 7306.30. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Seamless Square Tube from China?
To import Seamless Square Tube from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Leading Fly Steel Pipe Co., Ltd.. Ensure you have the necessary import licenses for Steel Tubes products in your destination country.
How can I check Leading Fly Steel Pipe Co., Ltd. before ordering?
Open the Leading Fly Steel Pipe Co., Ltd. company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
What are the key specifications of Seamless Square Tube?
The key specifications for Seamless Square Tube supplied by Leading Fly Steel Pipe Co., Ltd. include ASTM A500 Grade B/C; GB/T 6728 / GB/T 6725 equivalent; JIS G3466; DIN EN102, Carbon steel, C content typically 0.20-0.30%, Mn 0.60-1.60% (grade-dependent), and Square: 40x40mm to 800x800mm; Wall Thickness: 4-40mm; Length: 5.8-11.8m or custom. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Seamless Square Tube?
Leading Fly Steel Pipe Co., Ltd. offers Seamless Square Tube with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Seamless Square Tube the most?
Seamless Square Tube is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Leading Fly Steel Pipe Co., Ltd. through our platform.
What certifications does this Seamless Square Tube supplier hold?
Leading Fly Steel Pipe Co., Ltd. maintains international quality certifications. These ensure that the Seamless Square Tube meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Seamless Square Tube on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Leading Fly Steel Pipe Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
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 Leading Fly Steel Pipe Co., Ltd..
Explore More Steel Tubes Products for Wholesale Import
Discover more products in Steel Tubes from suppliers worldwide.