We,Hebei Gee Pipe Mill Co.,Ltd,are specialized in steel pipe, inclding seamless steel pipe ,ERW,SAW etc. welcome to consult. Seamless steel pipe OD:15-1219mmThickness:2.5-40mmLength :6000-12000mmMaterial :20#, , 304, 304L,316L, 310S,API PSL1, PSL2, GrB, X42, X46, X52, X60, X65, X70.10#-45#, Q345A/ B/ C/ D, 27SiMn, 40Cr, 40CrMn, 20CrMn, 30MnStandard:API 5L, API 5CT, DIN1629/2448, DIN17175, ASTM ...