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Help CenterSeamless Carbon Steel Pipe ASTM A36 A53 A192 Q235B 1 Year Warranty
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Hemaokang Steel (Shandong) Co., Ltd. is a reliable manufacturer and supplier of high-quality seamless carbon steel pipes. Established in 2025 with an annual export value of US$50–100 million, we serve markets across North America, South America, Europe, Asia, Africa, Oceania, and beyond. Our ASTM A36/A53/A192/Q235B seamless carbon steel pipe is engineered to meet diverse industrial needs, combining strength, durability, and cost-effectiveness. With a 1-year warranty and ISO9001 certification, we ensure every pipe delivers consistent performance. Whether you need structural support, fluid transport, or mechanical components, our product is a trusted choice for global buyers.
Our seamless carbon steel pipes are manufactured using advanced processes to guarantee uniformity and reliability. The seamless construction eliminates weld seams, providing higher pressure tolerance and reduced risk of leakage. Available in a wide range of sizes, from 1/2" to 36" outer diameter and wall thicknesses from SCH20 to SCH160, these pipes are suitable for both standard and custom applications. Let's explore the features that make this pipe a top contender in the market.
Key Features & Benefits
- Seamless Construction: No welded joints, ensuring uniform strength and superior resistance to pressure and stress. Ideal for high-pressure systems.
- Multiple Standards Compliance: Meets ASTM A36, A53, A192, and Q235B specifications, covering structural, pressure, and general applications.
- Excellent Mechanical Properties: High tensile strength (up to 400 MPa depending on grade) and good elongation, suitable for heavy-duty use.
- Corrosion Resistance: Can be supplied with black finish, galvanized coating, or oiled surface to enhance durability in various environments.
- Customizable Dimensions: Outer diameter, wall thickness, and length can be tailored to your project requirements. Available in random lengths (5.8m, 6m, 11.8m) or custom cuts.
- 1-Year Warranty: We stand behind the quality of our pipes. If any defect arises from material or workmanship, we offer a replacement or refund.
- ISO9001 Certified: Our production and quality management systems are certified, ensuring consistent quality and traceability.
- Cost-Effective: Competitive pricing without compromising on performance. Suitable for large-scale projects.
Technical Specifications
| Parameter | Value |
|---|---|
| Material | Carbon Steel (ASTM A36, A53, A192, Q235B) |
| Manufacturing Process | Hot Rolled / Cold Drawn (Seamless) |
| Outer Diameter | 1/2″ – 36″ (21.3mm – 914mm) |
| Wall Thickness | SCH20 – SCH160 (custom thickness available) |
| Length | 5.8m, 6m, 11.8m, or customized |
| Surface Treatment | Black paint, galvanized, oiled, or as required |
| Tensile Strength (min) | 400 MPa (for A53 Grade B) |
| Yield Strength (min) | 240 MPa (for A53 Grade B) |
| Certification | ISO9001 |
| Warranty | 1 Year |
Applications
Our seamless carbon steel pipes are widely used in:
- Structural Engineering: Building frames, bridges, scaffolding, and supports.
- Oil & Gas Industry: Transportation of crude oil, natural gas, and refined products.
- Water Supply Systems: Potable water, irrigation, and drainage pipelines.
- Mechanical Manufacturing: Shafts, rollers, cylinders, and automotive components.
- Industrial Equipment: Boilers, heat exchangers, and pressure vessels (using A192 grade).
- Construction: Piling, handrails, and fencing.
Why Choose Hemaokang Steel?
At Hemaokang Steel (Shandong) Co., Ltd., we pride ourselves on delivering excellence. With an annual export value of US$50–100 million, over 51–100 dedicated employees, and a global customer base, we have the capacity and expertise to fulfill large orders on time. Our ISO9001-certified quality management system ensures every pipe undergoes rigorous inspection—from raw material to final packaging. We offer flexible shipping options, including FOB, CIF, and CFR, and we provide professional after-sales support. Our 1-year warranty gives you peace of mind: if a pipe fails due to manufacturing defects, we will replace it promptly. Combine our competitive pricing, extensive stock, and custom fabrication capabilities, and you have a partner that adds value to your supply chain.
We invite you to contact us for a quotation or technical consultation. Whether you need a sample for testing or a bulk order for a major project, our team is ready to assist. Choose Hemaokang Steel—your reliable source for seamless carbon steel pipes.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between ASTM A36, A53, A192, and Q235B?
A: ASTM A36 is a structural steel standard, A53 covers pipe for pressure and mechanical applications, A192 is for seamless carbon steel boiler tubes, and Q235B is a Chinese standard similar to A36 with lower tensile strength. Our pipe is manufactured to meet multiple standards, ensuring broad applicability. -
Q: Can you provide pipes with custom lengths?
A: Yes, we can cut pipes to your specified lengths, typically up to 12 meters. Custom lengths are available upon request with a minimum order quantity. -
Q: What surface treatments are available?
A: Common options include black paint, galvanized (hot-dip or electro), oiled, or passivated. We can also apply special coatings upon request. -
Q: How do you ensure the quality of the pipes?
A: We follow ISO9001 procedures. Each pipe is tested for dimensions, mechanical properties, and surface finish. Third-party inspection (e.g., SGS, BV) is also available at your cost. -
Q: What is the minimum order quantity (MOQ)?
A: For standard sizes, the MOQ is 1 ton. For custom sizes, the MOQ may be higher. Please contact us for details. -
Q: How long does delivery take?
A: Typically 15–30 days after order confirmation, depending on the quantity and specifications. We work with reliable logistics partners to ensure timely delivery. -
Q: Does the 1-year warranty cover all defects?
A: The warranty covers defects in material and workmanship under normal use. It does not cover damage caused by improper installation, misuse, or corrosion in aggressive environments. Please refer to our warranty terms. -
Q: Can you provide samples before bulk order?
A: Yes, we can provide samples (free for standard sizes, buyer pays freight). This allows you to test the quality before placing a large order.
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