Basic Info.
Model NO.
320, 360, 410, 460, 490, etc.
After-sales Service
24h Online
Technique
Hot/Cold Rolled,Cold Draw,ERW,Saw,Efw,Extrude
Material
Carbon,Stainless,Alloy
Surface Treatment
Black/Varnishing/Polished/Oiled/Galvanized
Usage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
Certificate
CCS, ABS, BV, ISO9001
Thickness
0.4~8mm, Customizable
Length
1000~6000mm, Customizable
Delivery Time
at Stock or 7-15 Days According to The Quantity
Grade
201 202 304 304L 310 310S 316 361L
Quality Control
100% Inspection
Secondary or Not
Non-Secondary
Standard and Grade-02
320, 360, 410, 460, 490, etc.
Transport Package
Neutral Standard Export Seaworthy Packing
Specification
As Requirement
Product Description
Product Description
Our marine-grade seamless steel pipes are manufactured from high-quality carbon steel (e.g., ASTM A106, 5L) or stainless steel (e.g., ASTM A312 316L, Duplex 2205), certified by DNV, BV, CCS, LR, and other international classification societies. Designed for shipbuilding and offshore engineering, these pipes offer exceptional corrosion resistance, high-pressure strength, and low-temperature toughness, ideal for critical applications such as ship piping systems, fuel transfer, cooling systems, hydraulic lines, and LNG transportation.
Standards:
China Classification Society (CCS) Material and Welding Code - China Classification Society (CCS)
Det Norske Veritas (DNV) Code - Det Norske Veritas (DNV)
Lloyd's Register (LR) Code - Lloyd's Register (LR)
Germanischer Lloyd (GL) Code - Germanischer Lloyd (GL)
American Bureau of Shipping (ABS) Code - American Bureau of Shipping (ABS)
Bureau Veritas (BV) Code - Bureau Veritas (BV)
Italian Classification Society (RINA) Code - Italian Classification Society (RINA)
Japan Classification Society (NK) Code - Japan Classification Society (NK)
GB/T5312--Chinese national standard
Uses:
Used for the manufacture of seamless steel pipes for marine boilers and superheaters and Class I and II pressure pipe systems.
Main production steel pipe grades:
320, 360, 410, 460, 490, etc.
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) |
| Cold Drawn Pip | >30~50 | ±0.3 | ≤30 | ±10% |
| >50~219 | ±0.8% | | |
Mechanical properties:
| Standard | Grade | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) |
| GB/T5312 | 320 | 320~410 | ≥195 | ≥25 |
| 360 | 360~480 | ≥215 | ≥24 |
| 410 | 410~530 | ≥235 | ≥22 |
| 460 | 460~580 | ≥265 | ≥21 |
| 490 | 490~610 | ≥285 | ≥21 |
Chemical composition:
| Standard | Grade | Chemical Components(%) |
| C | Si | Mn | P | S |
| GB/T5312 | 320 | ≤0.16 | ≤0.35 | 0.40~0.70 | ≤0.035 | ≤0.035 |
| 360 | ≤0.17 | ≤0.35 | 0.40~0.80 | ≤0.035 | ≤0.035 |
| 410 | ≤0.21 | ≤0.35 | 0.40~1.20 | ≤0.035 | ≤0.035 |
| 460 | ≤0.22 | ≤0.35 | 0.80~1.40 | ≤0.035 | ≤0.030 |
| 490 | ≤0.23 | ≤0.35 | 0.80~1.50 | ≤0.035 | ≤0.030 |
Remarks: Residual elements Cr≤0.25%, Mo≤0.10%, Ni≤0.30%, Cu≤0.30% Total≤0.70
Detailed Photos
Certifications
Packaging & Shipping
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.
Company Profile
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.
Our Advantages
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.
FAQ
Q1: What are your primary product offerings?
A1: We are a leading manufacturer and supplier of high-quality steel products, specializing in:Stainless Steel & Carbon Steel: Sheets/plates, coils, and pipes/tubes (both seamless and welded)Structural Components: Various bar profiles (round, square, hexagonal, flat, angle), C-channels, and H/I-beamsCustom Fabrications: Tailored solutions to meet specific project requirementsQ2: What quality assurance measures do you have in place?
A2: We maintain stringent quality control through:Comprehensive Mill Test Certificates provided with all shipmentsOptional third-party inspection services (SGS, BV, etc.)ISO-certified manufacturing processesRigorous in-house testing and quality checksQ3: What are your standard packaging terms?
A3: Our standard packaging includes:Bundled or coiled goods secured with steel rods/strapsCustom packaging solutions available per customer specificationsExport-grade packaging to ensure optimal protection during transitQ4: What is your typical delivery timeline?
A4: We offer flexible delivery options:Stock items: Ready for shipment within 3 business days after deposit confirmationMade-to-order items: Production typically completed within 7-15 working days post-depositExpedited options available for urgent requirementsQ5: What competitive advantages does your company offer?
A5: We differentiate ourselves through:A team of highly skilled professionals and technical expertsIndustry-leading pricing without compromising qualityUnparalleled after-sales support and customer serviceExtensive inventory and reliable supply chain managementQ6: Do you provide product samples?
A6: Yes, we're pleased to offer:Complimentary small samples from existing inventoryCustomer only responsible for shipping costsCustom samples available for specific project needsQ7: What are your payment terms?
A7: Our standard payment structure:30% advance payment via T/T to initiate production/orderRemaining 70% balance due prior to shipmentFull documentation including product photos and packaging details provided before final payment Why Choose Us?
√ 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.
Address:
1-1910 Fengbin Road, Liangxi District, Wuxi, Jiangsu, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Auto, Motorcycle Parts & Accessories, Chemicals, Construction & Decoration, Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Tools & Hardware
Management System Certification:
ISO 9001, ISO 9000, ISO 14001, ISO 14000, ISO 20000, OHSAS/ OHSMS 18001, IATF16949, HSE, ISO 14064, QC 080000, GMP, BSCI, BRC, SA 8000, QHSE, HACCP, BS 25999-2, ISO 13485, EICC, ANSI/ESD, SEDEX, ISO 22000, AIB, WRAP, GAP, ASME, ISO 29001, BREEAM, HQE, SHE Audits, IFS, QSR, ISO 50001, LEED, PAS 28000, FSC, ISO 10012, ISO 17025
Company Introduction:
WUXI TONGNO SPECIAL STEEL Co., Ltd is an Industry Group Company. It is a professional company in designing, producing and selling steel pipe, pipefittings and prefabricated house. We have our own big factories with modern machine line to make high quality products, which is mainly to be exported to oversea markets.
We have factories located in wuxi city, it was established in 1989. This factory is a leading seamless stainless steel pipe and pipefitting manufacturer in China. It occupied 114, 000 square meters, with fixed capital over 200 million and total amount 300 million. It owns 500 staffs including 80 advanced engineers. It owns perfect management system, vigorous technology supports, advanced production equipment and completed inspection equipment. The factory pay highly attention to enterprise foundation establishment, successfully was approved the authentication of PED and AD by TUV from German company, and the national special equipment license. Our products greatly provide for petroleum chemical, metallurgy, pharmaceutical machinery, paper making, food, shipbuilding, environmental protection, boiler, heater exchanger, pressure container, condensation, water, electricity and so on. The mainly grades we can provide are 304, 304L, 316, 316L, 321, 321H, 317L, 310S, 347H, 31803 etc.
At the same time, we also are the agency of Bao Steel, Hengyang, Tianjin, Anshan, Pangang etc. Big group steel company. We offer the seamless carbon, welded carbon steel pipe, GI pipe, and special pipe. Fittings elbow, tee, reducer, cap, lap joint, flanges etc...This is better for our customer to buy the different products from China, while they are saving their time, but they can enjoy in our best serves.
We have advanced technology of management, we win the trust because of our good quality.
We have clannish conscientious and passionate salesman, we gladden and steady the customers with our best service.
We are pure-hearted and awaiting for your kind attention to our company.