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| Customization: | Available |
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| After-sales Service: | 24h Online |
| Warranty: | 1 Year |
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Standard:
GB/T9711--Conforming to the esteemed China National Standard, our products reflect superior craftsmanship and precision.
Uses:
Specifically designed for the seamless transportation of oxygen, water, and oil, these pipes are a cornerstone in the oil and gas industry, ensuring safe and efficient conveyance.
Main production steel pipe grades:
We offer an extensive range of steel pipe grades including L245 / Gr.B, L290 / X42, L320 / X46, L360 / X52, L390 / X56, L415 / X60, L450 / X65, and L485 / X70, each tailored to meet diverse industry requirements with precision.
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 | ||
| 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 (%) |
| 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. Secure Export Packaging: Utilizing sea-worthy methods combined with water-proof paper to ensure maximum protection.
2. Professional Loading and Fixing: Entrust our skilled teams to handle safe loading and secure fixing, guaranteeing your products are well-protected during transportation.
Delivery Detail: Expect swift delivery within 7-10 working days after the deposit is received, or as per the quantity specified in your order.
Wuxi Tongno Special Steel Co., Ltd. Established in 2013 with a registered capital of 5 million yuan, Wuxi Tongno Special Steel Co., Ltd. has swiftly become a leader in the professional manufacture of seamless steel pipes. Over the years, Wuxi Tongno Special Steel Co., Ltd. has expanded to operate three cutting-edge seamless steel pipe production lines, each designed to meet the highest standards of quality and efficiency.
Wuxi Tongno Special Steel Co., Ltd. stands by its unwavering commitment to the 'quality first, customer first' business philosophy. Our innovative production processes ensure products of superior precision, accommodating a diverse range of wall thicknesses and offering small-batch, wide-variety options with rapid delivery. We are proud to be at the forefront of domestic production, particularly excelling in the manufacture of small-diameter medium-thick-walled and large-calibre thin-walled alloy seamless steel pipes. Our exceptional products are renowned both nationally and internationally, playing a pivotal role in diverse project constructions and showcasing our unrivaled manufacturing prowess.
1. Exceptional Service Excellence: We ensure a prompt response to all inquiries within a remarkable 12-hour timeframe.
2. Industry-Leading Certifications: We proudly maintain prestigious certifications, including ISO 9001, CE, and SGS.
3. Cost-Effective Quality Assurance: Experience the perfect blend of competitive pricing and premium quality, as our products are sourced directly from our factory.
4. Impressive Production Capacity: Boasting a substantial monthly output of 20,000 tons, we guarantee efficient and seamless production.
5. Flexible Payment Options: We offer a variety of payment methods, including T/T and L/C, for your convenience.
6. Rapid Delivery & Standard Export Packaging: Anticipate swift delivery and packaging that adheres to international export standards.
7. Factory-Direct Pricing Advantage: Our in-house factory enables us to provide competitive pricing without sacrificing quality.
8. Comprehensive Third-Party Testing: We welcome any third-party testing to ensure the superior quality of our products.
9. Expert Team and Support: Our professional sales team and dedicated factory provide unwavering support.
10.Commitment to Customization: Your unique specifications are not just accepted-they're integral to our service. We are dedicated to fulfilling every customized request.
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