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Help CenterCarbon Steel Pipe With Mill Test Report And 1 Year Warranty Seamless ASTM A106 Gr.B SCH40 6 Inch
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Hemaokang Steel (Shandong) Co., Ltd. is a professional supplier of carbon steel piping solutions, and we take pride in offering seamless carbon steel pipes that meet the stringent requirements of ASTM A106. Our ASTM A106 Gr.B SCH40 6-inch seamless pipe is manufactured under strict quality supervision and delivered with a complete Mill Test Report (MTR) to ensure full traceability of material properties. Backed by a 1-year warranty, this product is designed to deliver reliable long-term performance for demanding industrial applications such as oil and gas transmission, petrochemical processing, and high-pressure steam lines.
As an ISO9001-certified company with an annual export value of USD 50-100 million, we have the capacity and experience to support both project-based and regular procurement needs. Our seamless A106 Grade B carbon steel pipes are available in a wide range of schedules and sizes, with this 6-inch SCH40 configuration representing one of our most requested specifications for mid-pressure service conditions.
Key Features of Our ASTM A106 Gr.B Seamless Pipe
- Seamless manufacturing process - The pipe is produced without a weld seam, which enhances structural integrity and resistance to high internal pressure, making it suitable for critical fluid transport systems.
- ASTM A106 Grade B material - This carbon steel grade delivers a good balance of mechanical strength, ductility, and weldability, and is widely accepted for high-temperature service above ambient temperature.
- SCH40 wall thickness - The standardized schedule 40 wall offers well-proportioned pressure containment capability for 6-inch nominal bore piping systems, reducing material consumption while maintaining sound pressure ratings.
- Complete Mill Test Report - Each pipe batch is accompanied by a factory test report that documents chemical composition, tensile strength, yield strength, elongation, and hydrostatic test results, allowing easy material verification for project documentation.
- 1-year warranty - We stand behind the quality and workmanship of our products, providing a 12-month warranty from the date of shipment against manufacturing defects.
Product Specification Sheet
| Parameter | Value |
| Manufacturing Standard | ASTM A106 / ASME SA106 |
| Material Grade | Gr.B (Grade B) |
| Nominal Diameter | 6 inch (DN150) |
| Schedule | SCH40 |
| Pipe Type | Seamless |
| Length | Random length 6m / customization available |
| Surface Finish | Black, varnished, oiled, or as per requirement |
| Test | Hydrostatic, tensile, flattening, bend test, etc. |
| Marking | Stencil printing or as customer request |
| Inspection & Certification | Mill Test Report available; ISO9001 quality system |
Performance Benefits for Buyers
- Reliable supply for longitudinal projects - With export volumes in the USD 50–100 million range, Hemaokang Steel ensures stable production output and on-time delivery even for large quantity orders.
- Global logistics - All orders are shipped efficiently from Qingdao Port, one of China’s busiest international seaports, offering convenient access to the major shipping lanes for North America, Europe, Southeast Asia, Africa, and other core markets.
- Material verification - The included MTR eliminates the tedious process of third-party verification for common procurement standards, allowing for a faster review of the material conformance.
- Application versatility - Designed for use in power generation, refinery piping, boiler systems, and industrial gas and water distribution networks, this 6-inch SCH40 pipe is a multi-purpose option suitable for numerous process conditions.
- Cost-effective performance - A106 Gr.B offers a budget-friendly yet dependable material solution for medium-pressure high-temperature applications when compared with premium alloy steel lines.
Industry Application Scope
Seamless carbon steel pipes of this class are commonly installed in environments where the pipeline must cope with elevated temperature and pressure. They are often found in power station boiler systems, refinery heat exchange lines, natural gas processing plants, hydraulic equipment, and general structural pressure piping. The SCH40 wall thickness for a 6-inch line pipe provides a balanced specification for these sectors, offering strong pressure resistance yet remaining manageable for fabrication and installation on site.
Quality Assurance and After-Sales Service
Hemaokang Steel maintains a professional quality control workflow covering incoming raw material inspection, in-process dimensional checks, final flattening and hydrostatic testing, as well as marking and packing verification. Every batch of our carbon steel pipe is stored in a dry, well-ventilated warehouse in Liaocheng, Shandong, maintained with appropriate anti-rust surface treatment before container loading and shipping. During and after the purchase, our experienced sales team offers responsive communication, document support, and customized packing solutions. If you require a longer-than-standard pipe length, optional beveling, special packaging, or a provincial certificate supplement, our production unit can adapt to those requirements based on the contract arrangement.
Hemaokang Steel (Shandong) Co., Ltd. brings together a compact but experienced production and sales team of 51 to 100 people, achieving an annual export value between US$50 million and US$100 million since our establishment in 2025. Our ISO9001-certified quality management system provides continuous process control over our steel tube lines, and our location in Liaocheng, the seamless steel pipe production hub of China, gives us the supply-chain advantage you are looking for. We invite you to send your detailed inquiry for the ASTM A106 Gr.B SCH40 6-inch seamless pipe, and we will respond with a formal quotation, delivery schedule, and the relevant Mill Test Report in a timely manner. Secure a dedicated supplier who is ready to fulfill your project’s pipeline requirements from Qingdao Port to your designated destination.
Frequently Asked Questions
Q1: Does this pipe come with a material test report?
Yes, a Mill Test Report is provided with each delivery, showing the heat number, chemical composition, tensile properties, and hydrostatic test results. Third-party inspection is supported at the buyer’s request.
Q2: What is the warranty coverage on this product?
We offer a 1-year warranty against any defects in material and workmanship. If a defect occurs under normal operating conditions, we will arrange a replacement for the affected quantity after joint verification.
Q3: Is this pipe suitable for high-temperature applications?
ASTM A106 Grade B is specifically intended for high-temperature service in pipe systems. It performs reliably in applications such as boiler water circulation, steam lines, and hot oil transportation, provided the operating parameters are within the design limits of SCH40 and standard flange ratings.
Q4: Can you provide different sizes and schedules?
Yes, we supply seamless carbon steel pipes in a large diameter and schedule range, including SCH10, SCH40, SCH80, and customized wall thicknesses. Please contact our sales team with your required size and quantity to confirm availability.
Q5: What payment terms do you accept?
We commonly accept T/T, L/C at sight, and other negotiable terms based on the order value and destination port. The exact terms can be discussed during the inquiry stage for a mutually convenient arrangement.
Q6: What is the lead time for this 6-inch SCH40 pipe?
For stock sizes, shipping can often be arranged within 7 to 15 days after deposit confirmation. For customized lengths, special packing, or large volume orders, lead time may be adjusted and will be confirmed in the sales contract.
Q7: Is surface treatment available?
Yes. Options include plain black, oiled, varnished, lacquered, or galvanized surface treatment. We can also apply 3PE or other anti-corrosion coating for order requirements, subject to project specification confirmation.
Q8: How do you handle product packaging?
The pipes are secured in bundles with steel strips, with protective end caps or caps on request. For container shipments, we use professional lashing and moisture-proof wrapping to ensure the goods arrive in good condition at the destination.
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