| Customization: | Available |
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| After-sales Service: | 24h Online |
| Warranty: | 1 Year |
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Standard:
API SPEC 5L-a benchmark of excellence set by the American Petroleum Institute Standard, ensuring top-tier quality and performance.
GB/T9711-proudly adhering to the rigorous China National Standard for dependable and resilient pipeline solutions.
Uses:
Expertly designed for the transportation of oxygen, water, and oil, our seamless steel pipes are indispensable in the oil and gas industry, providing robust and reliable performance.
Main production steel pipe grades:
Our diverse range of steel pipe grades includes L245 / Gr.B, L290 / X42, L320 / X46, L360 / X52, L390 / X56, L415 / X60, L450 / X65, and L485 / X70. Each grade is meticulously crafted to meet varied industrial requirements.
Dimensional tolerances:
| Pipe Types | Diameter(D) | Wall thickness(S) | ||
| Outer diameter of steel pipe(mm) | Permissible deviation(mm) | Wall thickness of steel pipe(mm) | Permissible deviation(mm) | |
| Steel Pipes | ≥60.3,S<20 | ±0.75% | ≤73.0 | +15%,-12.5% |
| ≥60.3,S≥20 | ±1.00% | >73.0,S<20 | +15%,-12.5% | |
| >73.0,S≥20 | +17.5%,-10 | |||
Chemical composition:
| Standard | Grade | Chemical Components(%) | |||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | ||
| API SPEC 5L GB/T9711.2 |
L245 /Gr.B | ≤0.28 | / | ≤1.2 | ≤0.03 | ≤0.03 | ≤0.50 | ≤0.50 | ≤0.50 |
| L290 / X42 | ≤0.28 | / | ≤1.3 | ≤0.03 | ≤0.03 | ≤0.50 | ≤0.50 | ≤0.50 | |
| L320 / X46 | ≤0.28 | / | ≤1.4 | ≤0.03 | ≤0.03 | ≤0.50 | ≤0.50 | ≤0.50 | |
| L360 / X52 | ≤0.28 | / | ≤1.4 | ≤0.03 | ≤0.03 | ≤0.50 | ≤0.50 | ≤0.50 | |
| L390 / X56 | ≤0.28 | / | ≤1.4 | ≤0.03 | ≤0.03 | ≤0.50 | ≤0.50 | ≤0.50 | |
| L415 / X60 | ≤0.28 | / | ≤1.4 | ≤0.03 | ≤0.03 | ≤0.50 | ≤0.50 | ≤0.50 | |
| L450 / X65 | ≤0.28 | / | ≤1.4 | ≤0.03 | ≤0.03 | ≤0.50 | ≤0.50 | ≤0.50 | |
| L485 / X70 | ≤0.28 | / | ≤1.4 | ≤0.03 | ≤0.03 | ≤0.50 | ≤0.50 | ≤0.50 | |
Mechanical properties:
| Standard | Grade | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) |
| API SPEC 5L GB/T9711.2 |
L245 / Gr.B | ≥415 | ≥245 | ≥18 |
| L290 / X42 | ≥415 | ≥290 | ≥18 | |
| L320 / X46 | ≥435 | ≥320 | ≥18 | |
| L360 / X52 | ≥460 | ≥360 | ≥18 | |
| L390 / X56 | ≥490 | ≥390 | ≥18 | |
| L415 / X60 | ≥520 | ≥415 | ≥18 | |
| L450 / X65 | ≥535 | ≥450 | ≥18 | |
| L485 / X70 | ≥570 | ≥485 | ≥18 |
Packing Details:
1. Our seamless steel pipes are meticulously packed in export sea-worthy packages, ensuring they are safeguarded against the elements. Each package is complemented with a layer of water-proof paper, offering you peace of mind during transit across the seas.
2. With our team of seasoned professionals, your order is guaranteed a secure and stable journey. Our experts specialize in the art of safe loading and precise fixing, ensuring your products reach you in impeccable condition.
Delivery Detail: Experience prompt and punctual delivery within 7-10 working days post-deposit. Alternatively, we offer flexible shipping times tailored to your order volume, ensuring your seamless steel pipes are delivered as per your unique requirements.
Nestled in the bustling city of Wuxi, Tongno Special Steel Co., Ltd. stands as a beacon of innovation. Established in 2013 with a foundational capital of 5 million yuan, this dynamic enterprise specializes in the sophisticated manufacture of seamless steel pipes. Over the years, Wuxi Tongno Special Steel Co., Ltd. has blossomed, now boasting three distinct seamless steel pipe production lines.
At Wuxi Tongno Special Steel Co., Ltd., we steadfastly adhere to a business philosophy rooted in 'quality first, customer first.' This ensures our products meet the highest standards of precision, offering a vast array of wall thicknesses and accommodating small batch orders with remarkable agility. Our production capabilities are recognized as advanced domestically, particularly in crafting small-diameter, medium-thick-walled, and large-calibre thin-walled alloy seamless steel pipes. Both at home and abroad, our products are celebrated in diverse construction projects, consistently showcasing the exceptional manufacturing prowess we are renowned for.
1. Exceptional Service: We promise a lightning-fast response to all inquiries within just 12 hours, ensuring unparalleled customer satisfaction.
2. Certifications: We take pride in our ISO 9001, CE, and SGS certifications, a testament to our commitment to quality and reliability.
3. Cost-Effective Quality: Reap the rewards of competitive pricing paired with premium quality, thanks to our direct factory sourcing.
4. Robust Production Capacity: Our impressive monthly output of 20,000 tons guarantees a steady supply and seamless production flow.
5. Flexible Payment Terms: We facilitate ease in transactions with a variety of payment options, including T/T and L/C.
6. Swift Delivery & Standard Export Packaging: Enjoy prompt delivery with products meticulously packaged to meet international export standards, ensuring safety and efficiency.
7. Factory-Direct Advantage: Our factory-direct approach empowers us to offer unbeatable prices while maintaining superior quality.
8. Third-Party Testing: We openly invite third-party testing to affirm the premium quality of our products, ensuring your peace of mind.
9. Expert Team Support: Supported by a team of seasoned professionals and a dependable factory, ready to assist you at every step.
10.Dedicated to Customization: Your unique specifications aren't just accommodated-they're the heart of our service. We commit to fulfilling your every customization need with precision.
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