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Help CenterCarbon Steel Seamless Pipe 1 Year Warranty Mill Test Certificate ASTM A106 GR.B SCH40
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Hemaokang Steel (Shandong) Co., Ltd. is a trusted supplier of high-quality carbon steel seamless pipes, serving global markets with annual export value exceeding US$50 million. Our ASTM A106 GR.B SCH40 Seamless Pipe is manufactured under strict quality control, ensuring reliable performance in high-pressure and high-temperature environments. With a 1-year warranty and full Mill Test Certificate provided, this product offers peace of mind for critical applications in oil & gas, petrochemical, and power generation industries.
We understand that pipe integrity is non-negotiable. That's why each pipe undergoes rigorous testing, including hydrostatic, tensile, and bending tests, to meet international standards. Our commitment to excellence is backed by ISO9001 certification and a team of 51-100 experienced professionals dedicated to delivering consistent quality.
Key Features & Technical Specifications
- Material: High-grade carbon steel (ASTM A106 GR.B) for excellent strength and durability.
- Wall Thickness: SCH40, providing optimal balance between pressure rating and weight.
- Seamless Construction: No weld seams, reducing risk of failure under stress.
- Size Range: From 1/2" to 24" nominal diameter (customizable upon request).
- End Finish: Beveled ends for easy welding, plain ends available.
- Surface Treatment: Black painted or anti-corrosion coating (optional).
- Testing: Hydrostatic, bend, flattening, and impact tests per ASTM standards.
- Certification: Mill Test Certificate (MTC) included with each shipment.
Dimensional & Mechanical Properties
| Property | Value |
| Tensile Strength (min) | 415 MPa (60,000 psi) |
| Yield Strength (min) | 240 MPa (35,000 psi) |
| Elongation (min) | 30% (in 2") |
| Hardness | ≤ 187 HB |
| Chemical Composition (C%, Mn%, P%, S%, Si%) | Per ASTM A106 GR.B |
Advantages & Customer Benefits
- Long Service Life: Seamless design eliminates weak points, ensuring decades of reliable operation.
- High Pressure Resistance: SCH40 wall thickness is suitable for applications up to 2,000 psi (dependent on size).
- Easy Installation: Beveled ends facilitate rapid welding, reducing labor costs.
- Cost-Effective: Competitive pricing without compromising quality – factory-direct from Shandong, China.
- Flexible Customization: Length, coating, and packaging tailored to your project requirements.
- Global Logistics: We ship to North America, South America, Europe, Southeast Asia, Africa, Oceania, and more.
Our pipes are used in critical infrastructure projects worldwide, from offshore platforms to refinery pipelines. The Mill Test Certificate confirms traceability and compliance, giving you full confidence in the material. With a 1-year warranty, we stand behind every pipe we deliver.
Why Choose Hemaokang Steel?
Hemaokang Steel (Shandong) Co., Ltd. was established in 2025 but has quickly become a major player in the steel industry, with annual export value between US$50 million and US$100 million. Our ISO9001-certified facility in Liaocheng, Shandong, employs 51-100 skilled workers, ensuring consistent quality and fast lead times. We serve a diverse range of markets, including domestic China, Europe, the Americas, and the Middle East.
Every shipment is backed by our rigorous quality assurance process, from raw material inspection to final packaging. We provide Mill Test Certificates for traceability, and our 1-year warranty covers any manufacturing defects. Contact us today for a quote or technical consultation – we are ready to support your project with reliable products and professional service.
Frequently Asked Questions
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Q: What is the difference between ASTM A106 GR.B and API 5L GR.B?
A: ASTM A106 GR.B is specifically for high-temperature service, while API 5L GR.B is for line pipe applications. Both have similar chemical composition, but A106 has stricter requirements for carbon and tensile properties. -
Q: Do you provide third-party inspection services?
A: Yes, we can arrange third-party inspection by SGS, BV, or other agencies upon request, at an additional cost. -
Q: Can I get a sample before bulk order?
A: Certainly. We can provide a small sample (e.g., 1 meter length) for evaluation. The sample cost is negotiable, and shipping is paid by the customer. -
Q: What is the minimum order quantity (MOQ)?
A: Our MOQ is typically 5 tons for common sizes. For non-standard sizes, MOQ may be higher. Contact our sales team for details. -
Q: How long does delivery take?
A: For standard SCH40 sizes, delivery is 15-30 days after order confirmation, depending on quantity. Custom specifications may take 30-45 days. -
Q: Is the pipe suitable for underground water or gas lines?
A: Yes, with appropriate anti-corrosion coating (e.g., FBE, 3PE), it is suitable for buried service. We can supply coated pipes per your specification. -
Q: What documents are provided with the shipment?
A: We provide Mill Test Certificate (MTC), packing list, commercial invoice, and certificate of origin (if required). Other documents are available on request. -
Q: Do you offer a warranty on the pipe?
A: Yes, we offer a 1-year warranty covering manufacturing defects. If any defect is found within the warranty period, we will replace or refund the affected pipes.
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