piepline pipe 1.OD: 1/2"~20" WT:2.77-60mm 2.Grade:Gr.A Gr.B X42 X46 X52 X56 X60 3.API License NO. 5CT---0865 5L---0593 pipeline pipeIntroduction of our company: Shandong Jialong Petroleum Pipe Manufacture Co., Ltd, as one of the largest manufacturers of SMLS steel pipe in the biggest steel pipe base-Liaocheng City in China, built in year 2006, we can produce up to 1000 kinds of SMLS steel pipes ...