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Help CenterCarbon Steel Seamless Pipe A53 Gr.B Mill Test Report Provided With 1 Year Warranty
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Welcome to Hemaokang Steel (Shandong) Co., Ltd., a trusted manufacturer and exporter of high-quality carbon steel pipes. Established in 2025, we have rapidly grown to serve global markets with an annual export value exceeding US$50 million. Our Carbon Steel Seamless Pipe A53 Gr.B is manufactured under strict quality control, and each shipment is accompanied by a Mill Test Report for full traceability. With a 1-year warranty, this product delivers reliable performance for demanding applications in oil & gas, construction, and industrial piping systems.
The seamless manufacturing process ensures uniform wall thickness, excellent pressure resistance, and superior structural integrity. Our pipes are produced in accordance with ASTM A53 standard, Grade B, which is widely recognized for its mechanical properties and weldability. Whether you need standard random lengths or customized dimensions, we offer flexible solutions to meet your project requirements.
| Specification | Details |
|---|---|
| Grade | ASTM A53 Gr.B |
| Manufacturing Process | Seamless (hot finished / cold drawn) |
| Size Range | 1/2" – 24" (DN15 – DN600) schedule 10 to XXS |
| Wall Thickness | 2.0 – 30.0 mm (customizable) |
| Length | Single random (5.8 – 6.1 m) / Double random (11.8 – 12.2 m) or cut to size |
| End Finish | Plain, beveled, threaded, or coupled |
| Surface Coating | Black painting, varnish, galvanized, or 3PE (optional) |
| Chemical Composition (max %) | C:0.30, Mn:1.20, P:0.050, S:0.045 |
| Tensile Strength (min) | 415 MPa (60,000 psi) |
| Yield Strength (min) | 240 MPa (35,000 psi) |
Key Features & Benefits
- 100% Seamless Construction – No welded seam, reducing the risk of failure under high pressure and temperature.
- Mill Test Report (MTR) Included – Every batch is tested and certified, providing full chemical and mechanical data for quality assurance.
- 1-Year Warranty – Covers manufacturing defects, giving you peace of mind for your investment.
- Excellent Weldability & Formability – Grade B material offers balanced strength and ductility, suitable for bending, flanging, and welding.
- Corrosion Resistance Options – Available with black coating, hot-dip galvanizing, or 3PE anti-corrosion layer for extended service life.
- Versatile Applications – Used in oil & gas transmission, water supply, structural support, and low-pressure piping systems.
- Customizable Dimensions – We can produce per your specific OD, WT, and length requirements with short lead times.
Quality Control & Trust
At Hemaokang Steel, we adhere to a strict quality management system certified to ISO9001. Our production process includes:
- Raw material inspection – verification of steel billet chemical composition.
- In-process monitoring – dimensional checks, ultrasonic testing, and hydrostatic pressure testing.
- Final inspection – visual, mechanical, and NDT (non-destructive testing) as per ASTM A53 requirements.
- Third-party inspection available upon request (e.g., SGS, BV, TÜV).
With a dedicated team of 51–100 employees and a strong supply chain, we ensure timely delivery to ports like Qingdao. Our main markets span North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. We have exported to over 30 countries, building long-term partnerships based on quality and reliability.
Frequently Asked Questions
-
Q: What is the difference between A53 Gr.B and A106 Gr.B?
A: A53 Gr.B is typically used for structural and low-pressure applications, while A106 Gr.B is for high-temperature services. Both are seamless, but A53 also covers welded pipes. Our product is seamless A53 Gr.B, supplied with MTR. -
Q: Do you provide the Mill Test Report for every shipment?
A: Yes, a Mill Test Report (MTR) is included free of charge with each order. It contains chemical composition, mechanical properties, and heat number traceability. -
Q: Can I get a sample before placing a bulk order?
A: Absolutely. We can provide small samples for quality evaluation. The sample is free, but freight is at your cost. -
Q: What is the minimum order quantity (MOQ)?
A: For standard sizes, MOQ is typically 2 tons. For non-standard sizes, MOQ may be 5 tons. Please contact us for specific requirements. -
Q: How long does delivery take?
A: For stock sizes, delivery is 7–10 days after order confirmation. For customized production, lead time is 15–30 days depending on quantity. -
Q: What payment terms do you accept?
A: We accept T/T, L/C, and other negotiable terms. For new customers, a 30% deposit and 70% balance against copy of shipping documents is typical. -
Q: Can you supply pipes with 3PE coating or galvanized finish?
A: Yes, we offer various surface treatments including black painting, varnish, hot-dip galvanizing, and 3PE anti-corrosion coating. Please specify your requirement. -
Q: Is the pipe suitable for underground water supply?
A: Yes, with proper coating (e.g., galvanized or 3PE), it is suitable for underground water and gas transmission. For potable water, please confirm local regulations.
Choose Hemaokang Steel for your next project. With our ISO9001-certified quality, Mill Test Reports, and 1-year warranty, you can be confident in the performance and longevity of our Carbon Steel Seamless Pipes. Contact us today to request a quote or discuss your specific requirements. We look forward to serving you from our base in Liaocheng, Shandong, China.
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