We are the manufacture for square and rectangular steel tube. Supply seamless, welded or stainless tubes.

Specification: dia,20*20-500*500mm   thickness,2-25mm

Materials:Q235B, Q345B, 20#, ST37, ST44, ST52, ASTM A53, ASTM A106 and so on

Standards:GB/T3094-2000, GB/T6728-2002, JISG3466 and so on

Because of the price of this kind of product is rise up frequently,If you are interest in our products please contact with me as soon as possible.