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.

公开(公告)号：US20220243858A1

公开(公告)日：2022-08-04

申请号：US17622116

申请日：2020-06-25

Applicant: SHAWCOR LTD.

Inventor： EILEEN WAN ,  TOR FREDRIK BREDELI ,  TORGEIR SLETVOLD ,  JAN PEDER HEGDAL ,  SURESH CHOUDHARY ,  PER OVE SINGSTAD ,  GUIDO RIDOLFI

IPC: F16L58/10 ,  F16L9/147 ,  F16L9/19 ,  F16L53/38 ,  B29C48/09 ,  B29C48/151

Abstract: Described is a method for manufacturing coated pipe sections having a hollow conduit or an electrical cable within the coating. Also described are such pipe sections. The hollow conduit may be used to place sensors, fiber optics, or heating cable within the coating.