公开(公告)号：US20220268375A1

公开(公告)日：2022-08-25

申请号：US17630085

申请日：2020-07-07

Applicant: SHAWCOR LTD.

Inventor： Eileen Wan ,  CATHERINE LAM ,  TOR FREDRIK BREDELI ,  TORGEIR SLETVOLD ,  GUIDO RIDOLFI

IPC: F16L9/147 ,  F16L58/10 ,  B05D7/14

Abstract: A multi layer pipe coating for steel pipe, and a method of production of same. The multi layer coated steel pipe has a first layer of coating, which is an anti-corrosion coating, a second layer of coating, comprising a thermoplastic selected from the group consisting of polyphenylene sulfide, polypropylene, and polystyrene, an epoxy intermediate layer between the second layer of coating and a third layer of coating, and a third layer of coating, which comprises a thermoplastic selected from the group consisting of polyphenylene sulfide, polypropylene and polystyrene. The second layer of coating and the third layer of coating comprise different thermoplastics.