Cov qauv rau roj thiab roj steel kav siv dav hauv tsev thiab txawv teb chaws
Cov qauv rau cov roj thiab roj steel kav siv dav hauv tsev thiab txawv teb chaws yog:
(1) API SPEC 5L "Line Pipe Specification" ntawm American Petroleum Institute;
(2) Cov qauv thoob ntiaj teb ISO 3183-1, 2, 3 "Technical Conditions for Delivery of Oil and Gas Steel Pipes";
(3) Rau qee qhov tseem ceeb ntawm cov kav dej mus ntev, muaj lawv tus kheej cov khoom siv ntxiv raws li kev siv tshwj xeeb.
Kev faib tawm ntawm cov yeeb nkab steel hauv API roj thiab roj steel yeeb nkab qauv thiab lawv qhov sib txawv tseem ceeb
Raws li cov kev cai ntawm API SPEC 5L, cov kav hlau steel tau muab faib ua ob theem khoom, PLS1 thiab PLS2, thiab cov txheej txheem sib txawv tau teev tseg rau ob hom khoom no. Qhov sib txawv tseem ceeb yog: piv nrog PLS1 thiab PLS2 qib, lub zog yuav tsum tau teev rau carbon sib npaug, tawg toughness, siab tshaj tawm lub zog thiab siab tshaj tensile zog. Kev tswj hwm cov khoom tsis zoo xws li sulfur thiab phosphorus kuj tseem nruj dua: kev sim tsis muaj kev puas tsuaj ntawm cov kav dej seamless tau dhau los ua qhov yuav tsum tau ua. Cov ntsiab lus uas yuav tsum tau sau rau hauv warranty thiab traceability tom qab qhov kev xeem ua tiav tau dhau los ua qhov yuav tsum tau ua.
Kev faib tawm thiab qhov sib txawv tseem ceeb ntawm cov kav hlau steel nyob rau hauv ISO 3183 roj thiab roj kis tau tus mob steel yeeb nkab qauv
Nyob rau hauv ISO 3183 roj thiab roj kis tau tus mob steel yeeb nkab qauv, steel kav tau muab faib ua peb ntu, A, B, thiab C, raws li qhov sib txawv ntawm cov kev xav tau zoo, tseem hu ua peb theem yuav tsum tau ntawm A, B, thiab C. . Qhov sib txawv tseem ceeb yog: nyob rau hauv ISO 3183-1Ib qib kev cai, cov kev cai yooj yim zoo sib npaug rau cov kev cai ntawm API SPEC 5L yog tsim, thiab cov kev cai tseem ceeb no yog universal; Ntxiv nrog rau cov kev cai yooj yim, ISO 3183-2B qib tus qauv yuav tsum tau ntxiv cov kev xav tau ntawm kev ua kom tawv thiab tsis muaj kev puas tsuaj; kuj tseem muaj qee qhov kev siv tshwj xeeb, xws li acidic ib puag ncig, marine tej yam kev mob thiab tsis tshua muaj kub tej yam kev mob, uas yuav tsum nruj heev rau qhov zoo thiab kev ntsuam xyuas ntawm steel kav, uas yog feem ntau xav txog nyob rau hauv IS0 3183-3 qib C tus qauv yuav tsum tau.
