Hot Expanded Large Diameter Carbon Steel Seamless Pipe 1. OD: 8"-42" (219mm-1220mm), ... B, API 5L GR.B, EN10204/3.1B, DIN1629-1948, DIN2448, EN10216-1, EN10217-1, SY/T5037 ... B, API 5L GR.B, EN10204/3.1B, DIN1629-1948, DIN2448, EN10216-1, EN10217-1, SY/T5037 ... +86-635-2185499Skype: denise456307BrandShandong Baodelong Steel Pipe Manufacturing Co.,Ltd Hot Expanded Large Diameter Carbon Steel Seamless Pipe