The seamless steel tube is produced by piercing a solid billet and then rolling, drawing or stretching it into the required size. Because there is no weld on the pipe body, it is often used in pressure lines, mechanical structures and hydraulic service. Large diameter thick wall seamless pipes are made by hot rolling. Cold rolling and cold drawing are used to produce precise pipe fittings, while small diameter pipes are manufactured through extrusion method. For pressure resistant usage, the standard tensile strength ranges from 490 MPa to 650 MPa.
Components
The seamless steel tube normally includes solid billet, pierced tube blank, rolled or drawn tube body, cut length, optional bevel and surface protection.
Product Advantages
The tube body is not interrupted by a welded seam.
Several production routes give more choices for diameter and wall thickness.
Inner surface quality is useful for fluid service.
The tube can be packed by bundle or special length according to order notes.
Main Applications
1. Oil and gas pipelines after pressure grade confirmation.
2. Machinery parts such as shafts, sleeves and support members.
3. Construction supports, scaffolding and bridge-related components.
4. Hydraulic and boiler lines that require stable pipe body quality.
FAQ
Q: Can the tube be used for hydraulic parts?
A: Yes, if the grade, tolerance and surface finish match the design.
Q: What strength reference is listed?
A: The supplied seamless file mentions 490 to 650 MPa for pressure-related use.
Q: Is custom length available?
A: Yes. Length and packing can be confirmed with the purchase order.
Q: What should be checked before ordering this seamless steel tube?
A: Material, size range, wall thickness, surface treatment, test request and delivery length should be checked before production.
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