Import Large-Diameter Welded Pipe — Buy in wholesale FOB from Supplier in China
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Large-Diameter Welded Pipe
Threeway Steel Co., Ltd. supplies large-diameter welded pipes manufactured via LSAW or SSAW processes, with diameters ranging from 16 inches (406 mm) to 80 inches (2032 mm). The pipes are made from carbon steel, meeting API 5L and ISO 3183 standards for oil and gas transmission, water conveyance and structural applications. These processes are chosen for their cost efficiency and high production rates compared to seamless alternatives.
LSAW pipes offer straightforward production and high efficiency, while SSAW pipes provide enhanced mechanical strength and material savings, though at a slower production rate. Both types are standard in industries like petrochemicals, power generation and urban construction, where large-volume liquid or gas transport is required. The pipes are typically used for water supply, drainage, gas transmission, LPG, high-pressure gas lines and structural piling.
Primary markets for these pipes include Southeast Asia, the Middle East and Africa, where demand for infrastructure and energy projects remains strong. Buyers should confirm the welding process (LSAW or SSAW) based on their project’s strength and cost requirements. The supplier’s location in Changsha, Hunan, positions it well for logistics to these regions, but importers must verify port access and shipping constraints for oversized loads.
| Manufacturing Process | LSAW (Longitudinal Submerged Arc Welding) or SSAW (Spiral Submerged Arc Welding) |
| Diameter Range | 16 inches (406 mm) to 80 inches (2032 mm) |
| Material Grade | Carbon Steel (API 5L Grade X42 to X80) |
| Standards Compliance | API 5L, ISO 3183 |
| Typical Applications | Oil and gas transmission, water conveyance, structural construction |
| Weld Strength | SSAW typically offers higher mechanical strength than LSAW (standard for spiral welding) |
| Production Efficiency | LSAW: high efficiency, lower cost; SSAW: lower efficiency, higher strength (typical industry trade-off) |
| Material Input | Steel sheet and strip (standard for welded pipe production) |
| Typical Wall Thickness | Varies by diameter and grade; confirm with supplier (standard range: 6.4 mm to 25.4 mm for API 5L) |
| Surface Finish | Bare or coated (typical options: black, galvanised, or epoxy-coated for corrosion resistance) |
| Length | Standard lengths: 6 m, 12 m; custom lengths available on request |
Threeway Steel Co., Ltd. operates from the 22nd Floor, Royal Wing Tower, Long Champ, Changsha, Hunan Province. The supplier is classified under the imported trust tier, indicating a focus on international trade, particularly for large-diameter welded pipes. The profile does not provide details on response rates, verification signals or certifications, so buyers should request these directly.
The company specialises in steel pipes for oil and gas, water and structural applications, leveraging China’s position as a key global supplier. No employee count, production capacity or client references are listed, so importers should conduct due diligence on the supplier’s ability to meet bulk order requirements and quality standards. The address in a commercial tower suggests a trading or coordination role rather than direct manufacturing, which may affect lead times and customisation options.
Large-diameter welded steel pipes are manufactured using LSAW (Longitudinal Submerged Arc Welding) or SSAW (Spiral Submerged Arc Welding) processes, with diameters typically ranging from 16 inches (406mm) to 80 inches (2032mm). These pipes meet API 5L and ISO 3183 standards and are widely used in oil and gas transmission pipelines, water conveyance systems, and structural construction projects. Global trade demand remains strong in Southeast Asia, the Middle East, and Africa, with major sourcing countries including China, India, and Turkey offering competitive FOB pricing for bulk orders.
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Sourcing Large-Diameter Welded Pipe from Threeway Steel Co., Ltd. - China Import Guide
Before ordering, confirm the manufacturing process (LSAW or SSAW) and its suitability for your project’s strength and cost requirements. Verify the pipe’s compliance with API 5L and ISO 3183 standards, and request mill test certificates to ensure the material meets the specified grade. Check the supplier’s ability to provide custom lengths or diameters if your project demands non-standard dimensions.
Logistics for large-diameter pipes require careful planning due to their size and weight. Clarify Incoterms with Threeway Steel Co., Ltd., as FOB or CFR terms will determine your responsibility for loading, shipping and unloading. For oversized loads, confirm port restrictions, crane availability and transport permits. Payment terms should align with delivery milestones, such as a deposit on order confirmation and the balance on shipment.
Quality checks should include a visual inspection of the weld seam and surface finish, as well as a review of non-destructive testing reports. Request hydrostatic testing certificates to confirm the pipe’s pressure rating. For coated pipes, inspect the coating thickness and adhesion to ensure long-term corrosion resistance. Maintain documentation for traceability, including heat numbers, test reports and compliance certificates.
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31 listingsTop Verified Suppliers for Large-Diameter Welded Pipe
30 suppliersBuy Large-Diameter Welded Pip in Bulk — Verified Supplier in China
When sourcing Large-Diameter Welded Pipe for your business, securing the right balance of quality and cost is essential. Threeway Steel Co., Ltd., a verified supplier based in China, offers this product with key specifications including API 5L Grade B, X42, X52, X60, X65, X70, X80; ASTM A252 Grade 3; ASTM A36, Carbon steel with trace amounts of Mn, Si, S, P; controlled carbon equivalent value (CEV) for weldability, and Outer diameter 406 mm to 2500 mm; Wall thickness 6 mm to 40 mm; Length 6 m to 18 m (single or double random). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $385/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7305.11, making it a staple in the Steel Pipes sector with strong demand from importing countries worldwide.
Large-Diameter Welded Pip Specifications, Trade Terms & Pricing
Importing Large-Diameter Welded Pip requires careful attention to shipping logistics, customs compliance, and secure payment terms. Threeway Steel 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 7305.11 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 Threeway Steel Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Large-Diameter Welded Pip 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 import export marketplace. Start your sourcing journey today.
Import Large-Diameter Welded Pip — Shipping, Logistics & Customs
Importing Large-Diameter Welded Pip 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 7305.11 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 Large-Diameter Welded Pip
What is the wholesale price of Large-Diameter Welded Pipe?
The current listed wholesale price for Large-Diameter Welded Pipe from Threeway Steel Co., Ltd. is $385/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 Threeway Steel Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Large-Diameter Welded Pip?
The supplier, Threeway Steel Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Large-Diameter Welded Pip. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Large-Diameter Welded Pipe?
For international shipping and customs clearance, Large-Diameter Welded Pipe is classified under HS Code 7305.11. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Large-Diameter Welded Pip from China?
To import Large-Diameter Welded Pip from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Threeway Steel Co., Ltd.. Ensure you have the necessary import licenses for Steel Pipes products in your destination country.
Is Threeway Steel Co., Ltd. a verified supplier?
Yes, Threeway Steel 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.
What are the key specifications of Large-Diameter Welded Pipe?
The key specifications for Large-Diameter Welded Pipe supplied by Threeway Steel Co., Ltd. include API 5L Grade B, X42, X52, X60, X65, X70, X80; ASTM A252 Grade 3; ASTM A36, Carbon steel with trace amounts of Mn, Si, S, P; controlled carbon equivalent value (CEV) for weldability, and Outer diameter 406 mm to 2500 mm; Wall thickness 6 mm to 40 mm; Length 6 m to 18 m (single or double random). 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 Large-Diameter Welded Pip?
Threeway Steel Co., Ltd. offers Large-Diameter Welded Pip with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Large-Diameter Welded Pip the most?
Large-Diameter Welded Pip is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Threeway Steel Co., Ltd. through our platform.
What certifications does this Large-Diameter Welded Pip supplier hold?
Threeway Steel Co., Ltd. maintains international quality certifications. These ensure that the Large-Diameter Welded Pip meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Large-Diameter Welded Pipe on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Threeway Steel 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 Threeway Steel Co., Ltd..
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