Seamless Carbon Steel Pipes

Specifications:
Diameter: 15~1200
wall thickness: 3~30
Material: ASTM A53 Gr.B, ASTM A106 Gr. A/B/C, 20#, 20G, Q345E, API 5L, X52, X42,ST37.0 STPG.K55, STK490, GB/T8163-1999, GB3087-1999, GB5310-1995 standards