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Help CenterCarbon Steel Coil for Welded Pipe Manufacturing ASTM A36 SS400 Q235B 1.5mm-6mm Thickness
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Welcome to Hemaokang Steel (Shandong) Co., Ltd. – your trusted partner for high-quality carbon steel coils. As a newly established yet rapidly growing exporter with an annual export value between US$50 million and US$100 million, we are proud to offer our Carbon Steel Coil for Welded Pipe Manufacturing, available in grades ASTM A36, SS400, and Q235B, with thickness ranging from 1.5mm to 6mm. These coils are specifically engineered to meet the demanding requirements of welded pipe production, ensuring excellent weldability, dimensional accuracy, and consistent mechanical properties. With our ISO9001 certification and a dedicated team of 51–100 professionals, we guarantee reliable supply and superior product performance for your global projects.
Our carbon steel coils are hot-rolled from premium billets and undergo strict quality control at every stage. The material exhibits excellent tensile strength, elongation, and formability, making it ideal for manufacturing ERW (electric resistance welded) pipes, spiral welded pipes, and structural tubes. Below are the key technical specifications and parameters:
| Grade | Yield Strength (min) | Tensile Strength | Elongation (min) | Application |
| ASTM A36 | 250 MPa | 400–550 MPa | 20% | General structural, welded pipe |
| SS400 (JIS G3101) | 245 MPa | 400–510 MPa | 21% | Welded pipe, automotive, construction |
| Q235B (GB/T 700) | 235 MPa | 370–500 MPa | 26% | Pressure vessel, pipe, bridge |
Key Features & Benefits:
- Consistent Chemical Composition: Low carbon content (≤0.25% for most grades) ensures excellent weldability without preheating, reducing production costs.
- Precise Dimensional Control: Thickness tolerance meets ASTM A568 or JIS G3193 standards (±0.1mm for typical gauges), enabling smooth pipe forming and minimal material waste.
- Superior Surface Quality: Coils are free from scale, rust, and edge defects, thanks to our advanced pickling and oiling treatment (optional).
- Customizable Width & Coil Weight: Widths from 600mm to 1500mm, and coil weight up to 25 tons per coil, tailored to your production line requirements.
- Bulk Supply Capability: With annual export value exceeding US$50 million, we can handle large-volume orders with stable lead times.
Quality Assurance: Every coil is tested for mechanical properties, chemical composition, and surface condition. We provide mill test certificates (MTC) as per EN 10204 3.1 for full traceability. Our ISO9001:2015 quality management system ensures consistent production from raw material to final dispatch.
Packaging & Shipping: Coils are secured with steel straps, wrapped in waterproof paper, and loaded in containers from Qingdao Port. We offer FOB, CIF, and CFR terms, with professional logistics support for North America, South America, Europe, Africa, Middle East, Asia, and Oceania.
At Hemaokang Steel, we are committed to delivering value beyond the product. Our 51–100 experienced staff, combined with strong supply chain relationships, enable us to offer competitive pricing, flexible payment terms (T/T, L/C), and after-sales technical support. Join our growing list of satisfied customers in over 15 regional markets worldwide.
Contact us today for a quote or sample request. Experience the reliability of Hemaokang Steel – your partner in welded pipe manufacturing.
Frequently Asked Questions (FAQ)
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What is the minimum order quantity (MOQ) for this carbon steel coil?
Our standard MOQ is 25 metric tons per size and grade. For smaller trial orders, please contact our sales team – we can accommodate sample coils (minimum 1 ton) upon request. -
What are the typical delivery times?
For standard grades and thicknesses, delivery is 15–20 days after receipt of deposit. Customized dimensions may require 25–30 days. -
Do you provide third-party inspection?
Yes, we welcome inspections by SGS, BV, or any other accredited agency. The cost is typically shared or borne by the buyer, depending on the order value. -
Can the coil width be customized?
Absolutely. Our slitting line can produce widths from 600mm to 1500mm, with tolerances as tight as ±1mm. Please specify your required width during ordering. -
Are these coils suitable for ERW pipe production?
Yes, they are specifically designed for ERW (electric resistance welding) and spiral welded pipe manufacturing. The low carbon content ensures excellent weldability. -
What surface treatments are available?
We offer bare (black), pickled and oiled, or coated with a thin anti-rust oil. For export to humid regions, we recommend pickled and oiled or coated options. -
Do you provide mill test certificates?
Yes, a mill test certificate (MTC) per EN 10204 3.1 is included with each shipment, detailing chemical composition and mechanical properties.
Still have questions? Our technical team is available 24/7 to assist you.
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