qiancheng steel-pipe co.,ltd This is Cangzhou Qiancheng Steel-Pipe co. ,Ltd and we professionally produce seamless steel pipes and ERW steel pipesOur company specializes in ASTM, DIN, JIS, GB,BS,EN seamless steel pipe, and annual operating straight pipe, spiral pipe, alloy pipe, rectangular steel tube and pipe fittings. Seamless implementation of the standard material: API 5L/5CT GR.B ASTM A106/A53 GR.B ST35.8 ST42 ST45 ST52 ST52.4 20 # 45 # Q345B X42-X65. Specifications: 1 / 2 \