... with good anti-corrosion performance. 1. The standard lined pipe length which we can offer:4000mm, 3000mm, 2000mm, ... 500mm is fabricated by pulling PTFE liner(pipe) into seamless steel pipe, and that more than 500mm is made ... refers to the straight tube)Linging materials is optional(PTFE, PFA, ETFE, PP, PO, PE, PPS etc.Flange ... ). Also can based on customer requirement. steel&plastic composite pipe