Our invested Welding pipe units focus on manufacturing EFW/LSAW pipes of stainless, alloy steel and line pipes , with annual production capacity of 80, 000M. Tons of high class welding pipes. including Standard of A358, A312 TP316, 304, 347, A672 CL22, API 5L GR. B X42-X70 PSL2, Range: 14"- 110" with Wall Thickness 100mm available.