Seamless Steel Tube
Seamless Steel Tube

Seamless tube adopts solid steel billet via piercing, hot rolling, cold drawing and precision sizing without any welding seam. Compact metal structure, ultra-high pressure & temperature resistance without weld defects, superior mechanical performance than welded pipe. Used for high-pressure boiler tubes, oil & gas transmission, hydraulic pipelines and chemical high-pressure equipment.


Item

Details

Common Size Range

Outer diameter:10–630mm; Wall thickness:2–80mm; Standard length 6–12m; hot rolled & cold drawn two types

Material Grade (GB/ASTM/EN/BS/AS)

GB: 20#, 45#, Q345B; ASTM: A106 Gr.B, A53 Gr.B; EN: P235GH, P265GH; BS: BS3059 Grade 2; AS: AS3678 Grade 250

Executive Standard (GB/ASTM/EN/BS/AS)

GB: GB/T 8163-2018, GB/T 3087-2018; ASTM: ASTM A106, ASTM A53; EN: EN 10216; BS: BS 3059; AS: AS/NZS 3688