Invention Grant
- Patent Title: High temperature field joints
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Application No.: US14455213Application Date: 2014-08-08
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Publication No.: US09810366B2Publication Date: 2017-11-07
- Inventor: Jan Peder Hegdal , Torgeir Sletvold , Eileen Wan , Suresh Choudhary
- Applicant: ShawCor Ltd.
- Applicant Address: CA Toronto
- Assignee: SHAWCOR LTD.
- Current Assignee: SHAWCOR LTD.
- Current Assignee Address: CA Toronto
- Agency: DeLio, Peterson & Curcio, LLC
- Agent Thomas E. Ciesco
- Main IPC: F16L9/14
- IPC: F16L9/14 ; F16L59/02 ; B23K31/02 ; B23K37/00 ; F16L58/10 ; F16L59/14 ; F16L58/18 ; F16L59/20 ; F16L13/02 ; B29C39/10 ; B29C33/00 ; F16L1/16 ; F16L9/02 ; F16L9/22

Abstract:
A method for forming a high temperature field joint between two insulated pipe sections, and an insulated conduit having a low temperature field joint. The conduit comprises a steel pipe with a corrosion protection coating and a pipe insulation layer comprising a polymer composition having thermal conductivity of less than about 0.40 W/mk, and/or heat resistance to continuous operating temperatures from about 150° C. to above about 205° C. After a circumferential weld joint is formed between the two pipes, a first field joint insulation layer is applied over the joint area, the first field joint insulation layer comprises a polymer composition having heat resistance to continuous operating temperatures from about 150° C. to above about 205° C.
Public/Granted literature
- US20150041017A1 HIGH TEMPERATURE FIELD JOINTS Public/Granted day:2015-02-12
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