| Customization: | Available |
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| After-sales Service: | 24h Online |
| Type: | Seamless/Welded |
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Standard:
GB/T 3091 -- Chinese National Standard
ASTM A312/A312M-2005-- -- American Society for Testing and Materials (ASTM) Standard
API SPEC 5L--American Petroleum Institute Standard
EN 10219 -- Standards of the European Welding Federation (EWF) and the European Committee for Standardization (CEN)
Main production steel pipe grades:
Q235A,Q235B,Q235C,20#,Q345(16Mn),L245(B),L290(X42),L320(X46),L360(X52),L390(X56),L415(X60),L450(X65),L485(X70),L555(X80)
Chemical Composition
| Standard | Grade | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) |
| GB/T 3091 | 20 | 410~550 | ≥245 | ≥20 |
| Q235(A,B,C) | 370~500 | ≥225 | ≥26 | |
| Q345 | 490~650 | ≥325 | ≥21 | |
| Q390 | 490~650 | ≥350 | ≥18 | |
| Q420 | 520~680 | ≥380 | ≥18 | |
| Q460 | 550~720 | ≥420 | ≥18 | |
| API 5L - PSL1 | L245 / Gr.B | ≥415 | ≥245 | ≥21 |
| L290 / X42 | ≥415 | ≥290 | ≥21 | |
| L320 / X46 | ≥435 | ≥320 | ≥20 | |
| L360 / X52 | ≥460 | ≥360 | ≥19 | |
| L390 / X56 | ≥490 | ≥390 | ≥18 | |
| L415 / X60 | ≥520 | ≥415 | ≥17 | |
| L450 / X65 | ≥535 | ≥450 | ≥17 | |
| L485 / X70 | ≥570 | ≥485 | ≥16 |
| Standard | Grade | Chemical Components(%) | |||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | ||
| GB/T 3091 | 20 | 0.17~0.24 | 0.17~0.37 | 0.35~0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
| Q235(A,B,C) | ≤0.22 | ≤0.35 | ≤1.40 | ≤0.045 | ≤0.050 | ≤0.30 | ≤0.30 | ≤0.30 | |
| Q345 | ≤0.20 | 0.20~0.50 | 1.20~1.60 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.50 | ≤0.20 | |
| Q390 | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.50 | ≤0.20 | |
| Q420 | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.50 | ≤0.20 | |
| Q460 | ≤0.20 | ≤0.60 | ≤1.80 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.80 | ≤0.20 | |
| API 5L - PSL1 | 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 | |
Packing Details:
1.Export sea worthy package + water proof paper
2.Safe loading and fixing Professional teams
Delivery Detail: within 7-10 working days after receiving the deposit or according to your order quantity.
Wuxi Tongno Special Steel Co., Ltd. was founded in 2013, the registered capital of 5 million yuan, for the professional production of seamless steel pipe manufacturing enterprises; after years of rapid development, Wuxi Tongno Special Steel Co., Ltd. now has three types of seamless steel pipe production line;
Wuxi Tongno Special Steel Co., Ltd. has been adhering to the 'quality first, customer first' business philosophy, to ensure that the products of high-precision, wide range of wall thicknesses, small quantities of many varieties, fast-paced characteristics of the production, sales in the domestic advanced level, especially in the small-diameter medium-thick-walled and large-calibre thin-walled alloy seamless steel pipe production at the domestic advanced level. Level. Products at home and abroad enjoy a reputation for a variety of project construction, play their own characteristics of manufacturing energy.
1. Exceptional Service: We guarantee a response to all inquiries within 12 hours.
2. Certifications: Proudly holding ISO 9001, CE, and SGS certifications.
3. Cost - Effective Quality: Benefit from competitive prices and top - notch quality, as our products are directly sourced from our own factory.
4. Robust Production Capacity: With a monthly output of 20,000 tons, we ensure seamless production.
5. Flexible Payment Terms: We accept various payment methods, including T/T and L/C.
6. Swift Delivery & Standard Export Packaging: Expect quick delivery and products packaged in line with international export standards.
7. Factory - Direct Advantage: Our own factory enables us to offer competitive prices without compromising on quality.
8. Third - Party Testing: We welcome any third - party testing to verify the quality of our products.
9. Expert Team Support: Backed by a professional sales team and a reliable factory.
10.Dedicated to Customization: Your individual specifications are not just accepted-they're the cornerstone of our service. We're committed to delivering on every customized request.
√ Quality Assurance: Rigorous testing and certification
√Competitive Pricing: Cost-effective solutions without compromise
√ Reliable Delivery: On-time fulfillment guaranteed
√ Custom Solutions: Tailored to your exact specifications
√ Expert Support: Technical guidance at every stage
For further inquiries or specific requirements, please contact our sales team. We're committed to providing exceptional service and top-quality steel products for your projects.
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