High-Quality Carbon Steel Seamless Tube Supplier | ASTM A106, A53, API 5L | Tight Tolerance & High Finish For Sale
Outer Diameter： 10–300mm,according to customer requirements
Thickness： 4–100mm,according to customer requirements
Length： Normal 5.8m, 6m ,random length can be customized
Surface：Bare, Black Painted, Varnish Coating, galvanized etc.
Standard：ASTM，AISI，JIS,GB， DIN,EN
Products can be customized
Email: [email protected]
WhatsApp/WeChat/Mobile：+86-18753135285
Carbon steel Seamless Tube performance parameters
| Product Name | Carbon steel Seamless Tube |
|---|---|
| Material | Q195-Grade B, SS330, SPC, S185,Q215-Grade C,CS Type B, SS330, SPHC,Q235---Grade D, SS400, S235JR, S235JO, S235J2,Q345---SS500 |
| Model | Outer Diameter: 10--300mm, according to customer requirements |
| Thickness: 4--100mm, according to customer requirements | |
| Length: Normal 5.8m, 6m ,random length can be customized | |
| Standard | GB ASTM AISI JIS |
| Place of Origin | Shandong, China |
| Delivery time | 7-15 days |
| Surface finishing | Bare, Black Painted, Varnish Coating, galvanized etc. |
| Certificate | ISO 9001,ISO14001,ISO45001,ISO50001,CE,LR,ICC,SGS.BV etc |
| Supply capacity | 20,000 tons/year |
| MOQ | 1 ton |
| Trade Terms | FOB, CIF, CFR, EXW, FCA, FAS, etc. |
| Payment | TT, LC, We can negotiate |
| Tests | squash test, extension test, hydrostatic test, crystal decay test, heat resistance |
| Application | Steel Structure, Scaffolding, Fence, Conduit, Greenhouse, Decorative pipe, Post, Roofing |
| Advantages |
1, Quick Respond 2, Reasonable Price 3, Abundant stock and prompt delivery 4, Flexible payment terms 5, Rich experiences in manufacturing and exporting 6, Excellent Quality |
Advantages of Our Carbon steel Seamless Tube
Integral Seamless Structure and Superior Safety
Our carbon steel seamless tubes are manufactured from solid billets through piercing, which completely eliminates potential weak points associated with weld seams. This integral structure provides exceptional pressure resistance and impact strength, ensuring safer and more reliable operation under extreme high-pressure, high-temperature, or corrosive environments. It is the premier choice for oil, chemical, and power industries.
Precise Dimensional Tolerances and Excellent Surface Quality
Utilizing advanced cold drawn or hot rolled processes, we ensure that our seamless tubes possess strict wall thickness tolerances and smooth inner and outer surfaces. This superior geometric precision significantly reduces machining allowances in hydraulic cylinder manufacturing, mechanical processing, and automotive drive shaft applications, lowering production costs and improving assembly accuracy.
Outstanding Mechanical Strength and Heat Treatment Response
Our seamless tubes are made from high-purity carbon steel, offering excellent yield strength and elongation. The uniform microstructure ensures a sensitive response to heat treatment processes like quenching and tempering. Whether used for structural supports or high-load fluid transport, they exhibit exceptional durability and fatigue resistance, meeting stringent standards such as ASTM A106 or API 5L.
Packaging style of Carbon steel Seamless Tube
FAQs
How can I confirm if the selected seamless tube thickness meets my high-pressure system requirements?
Our seamless tubes strictly follow Schedule (e.g., Sch 40/80/160) wall thickness ratings. We provide recommendations based on your operating pressure and temperature according to ASTM A106 or API 5L standards, ensuring every pipe passes a 100% hydrostatic test to guarantee safety under extreme pressure.
For my mechanical part machining, should I choose hot rolled or cold drawn seamless tubes?
If your application is mainly for fluid transport with standard dimensional requirements, hot rolled tubes are more economical. However, if your parts require precise ID/OD fit or thin walls with high strength (e.g., hydraulic cylinders), cold drawn seamless tubes are the best choice as they offer tight tolerances and superior surface finish.
Can you provide a complete Mill Test Certificate (MTC)? What testing items are included?
We provide an MTC complying with EN 10204 3.1 for every shipment. The report includes chemical composition analysis, mechanical property tests (yield, tensile, elongation), flattening tests, flaring tests, and non-destructive testing (NDT) results like ultrasonic or eddy current, ensuring full traceability.
How are the tube ends treated? Do they support on-site welding?
We offer beveled ends, plain ends, or threaded ends based on your needs. Our carbon steel material features excellent weldability, and the beveled design complies with international welding specifications, ensuring fast and high-strength butt-welding during on-site construction.
Since seamless tubes rust easily, how do you ensure they remain in good condition after long sea freight?
The surface of our seamless tubes is treated with black painting, anti-rust oil, or varnish. Plastic caps are fitted to the ends to prevent debris entry and protect bevels. For high-precision cold drawn tubes, we use woven bags or wooden box packaging to ensure the product arrives rust-free and without damage.
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