公开(公告)号：US20160109052A1

公开(公告)日：2016-04-21

申请号：US14954545

申请日：2015-11-30

申请人： Masahide Yodogawa

发明人： Masahide Yodogawa ,  Suresh Choudhary ,  Jan Peder Hegdal ,  Torgeir Sletvold ,  Eileen Wan

IPC分类号： F16L59/02 ,  B23K31/02 ,  F16L58/10 ,  F16L59/14 ,  F16L9/22 ,  F16L9/02

CPC分类号： F16L59/029 ,  B23K31/02 ,  B23K31/027 ,  B23K37/00 ,  B29C33/0011 ,  B29C39/10 ,  F16L1/161 ,  F16L9/02 ,  F16L9/22 ,  F16L13/0272 ,  F16L58/1054 ,  F16L58/1081 ,  F16L58/181 ,  F16L59/14 ,  F16L59/143 ,  F16L59/20

摘要： 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.