天然气管道安装焊接技术的应用

,,,,1,4.75km2.5MPa,L29071111mm,,231,2,,:(1),,,(2),,(3),(4),(5),,,,,,3(1),,;,(2),,,,(3),,(4),,,,,8520072©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(5),(6),,,;,,,(7)(SYPT4103),100%,;X20%,100%X,44.1,,,CRCCRC,;,30000,,,;,,,,,;90,,,:(1),(SMAW)(TIG);(2),[STT(SurfaceTensionTransferTM)(MIG)(MAG)](FCAW);(3)(AW);(4)(SAW)-(FBW)4.2,,L29071111,,,,:(TIG)4.3(1):,,JB4708-2000SYPT4103GB50236-98,,1(2)(2)(3)(3):,32.52.5,1.50.75mm;9520072©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(L290)L2902mm(A)(V)(cmPmin)mmmmLPminTIGJ502.4135-14517-1910-253.279D1T4273.290-11021-2320-30D2T4273.290-11021-2320-30320#L290E4303J422J427TIG-J50L290+16MnRE4315J427TIG-J50(4):,,,,,,0,100mm154.4(1),,(2),P,,;,,(3),;,99.96%(4),(5),,(6):a.,,,b.,c.,0620072©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(7),5(TIG),4.75km,,,,,,,,,(46)JGJ46-2005,;9.0.2,1010.0.1,;10.0.21mm8,,,;10.0.3,,,11,,(:)1620072©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.