Seamless Steel Pipe

Seamless steel pipe is a kind of pipe without welding seam, made from solid billet through piercing, hot rolling, cold drawing or cold rolling process. It features high density, stable mechanical properties, strong pressure resistance and high dimensional accuracy, serving as a key basic material in industrial manufacturing, energy equipment, engineering machinery, petrochemical and other fields. We mainly supply carbon steel seamless tubes, alloy seamless tubes, high-pressure boiler tubes, fluid transportation tubes, structural tubes and precision seamless tubes, with materials including 10#, 20#, 35#, 45#, 16Mn, 20Cr, 40Cr, 12Cr1MoV, etc., strictly complying with GB/T8162, GB/T8163, GB3087, GB5310, ASTM A106, DIN 2448 and other standards.

Product specifications cover outer diameter 6mm-630mm, wall thickness 1mm-60mm. Custom cutting, threading, beveling, painting, pickling and passivation are available according to customer requirements. Without welding defects, seamless pipes feature reliable tensile and yield strength, ideal for high-pressure fluid transportation, boiler heat exchange, oil drilling, hydraulic systems, mechanical structures and pipeline projects. Compared with welded pipes, seamless pipes are more suitable for high-temperature, high-pressure, corrosive and heavy-load working conditions with longer service life and higher safety.

All seamless steel pipes pass eddy current, ultrasonic and hydrostatic tests to ensure no cracks, no laminations and no defects, with stable tolerances and excellent surface quality. Wongsteel provides spot delivery and customized production, offering high-quality and cost-effective seamless steel pipe solutions for machinery, power boilers, petrochemical and infrastructure customers.