1. Nyob rau saum npoo, txiav txim, uas yog, soj ntsuam nyob rau hauv tsos. Kev tshuaj xyuas qhov zoo ntawm qhov sib koom ua ke yog ib qho yooj yim thiab siv dav hauv kev tshuaj xyuas. Nws yog ib feem tseem ceeb ntawm kev tshuaj xyuas cov khoom tiav. Nws yog tsuas yog nrhiav tau qhov tsis xws luag ntawm qhov chaw ntawm qhov vuam thiab qhov sib txawv ntawm qhov loj. Feem ntau, nws tau pom los ntawm qhov muag liab qab, thiab siv cov qauv qauv, kev tswj kom muaj nuj nqis thiab cov iav tsom iav los kuaj. Yog hais tias muaj qhov tsis xws luag ntawm qhov chaw ntawm lub vuam, nws muaj peev xwm ntawm qhov tsis xws luag hauv qhov vuam.
2. Kev tshuaj xyuas cov txheej txheem ntawm lub cev: Cov txheej txheem ntawm kev kuaj lub cev yog siv qee qhov tshwm sim ntawm lub cev los txiav txim siab lossis ntsuas. Kev tshuaj xyuas ntawm qhov tsis xws luag ntawm cov khoom siv lossis cov khoom ua haujlwm feem ntau yog siv los siv cov kev tshawb nrhiav tsis muaj kev puas tsuaj. Tsis muaj kev puas tsuaj muaj xws li kev tshawb nrhiav ultrasonic, kev tshawb pom hluav taws xob, kev nkag mus rau kev tshawb nrhiav, kev tshawb nrhiav sib nqus, thiab lwm yam.
3. Kev ntsuas siab ntawm lub thawv ntim siab: Ntxiv nrog rau kev ntsuas kev sib khi, lub thawv siab yuav tsum tau ua. Muaj ob hom kev ntsuas hydraulic thiab kev ntsuas huab cua. Lawv tuaj yeem kuaj qhov ntom ntawm cov welds thiab cov kav dej ua haujlwm nyob rau hauv siab. Kev ntsuas huab cua siab yog qhov rhiab thiab nrawm dua li qhov ntsuas hydraulic. Nyob rau tib lub sijhawm, cov khoom tsis xav tau kev kho dej tom qab kev sim, uas yog tshwj xeeb tshaj yog siv rau cov khoom uas muaj dej tsis zoo. Txawm li cas los xij, qhov txaus ntshai ntawm qhov kev xeem yog ntau dua li qhov ntsuas hydraulic. Thaum kuaj, peb yuav tsum ua raws li cov kev ntsuas kev ruaj ntseg sib xws los tiv thaiv kev sib tsoo thaum lub sijhawm xeem.
4. Txiav txim siab kuaj: Vuam cov thawv ntim cov kua lossis roj, tsis muaj qhov tsis zoo ntawm lawv cov welds, xws li nkag mus rau cov kab nrib pleb, cua daj cua dub, qhov seem, cov ntaub so ntswg uas tsis muaj pov thawj thiab xoob, thiab lwm yam, tuaj yeem pom nrog kev ntsuas ntom ntom. Cov txheej txheem ntsuas qhov ntom ntom muaj xws li: kuaj kerosene, ntsuas dej thauj khoom, ntsuas dej punch, thiab lwm yam.
5. Txhua lub raj steel ntawm qhov ntsuas dej nyob ntsiag to yuav tsum ua qhov ntsuas dej zoo li qub yam tsis muaj qhov to. Kev ntsuas siab yog xam los ntawm kev ntsuas ntsuas P=2ST/D. Hlau siv tus qauv qhia txog 60% ntawm qhov tsawg kawg nkaus tus nqi tawm los (Q235 yog 235MPa). Stabilization lub sij hawm: D<508 test pressure maintenance time is not less than 5 seconds; D ≥ 508 test pressure maintains no less than 10 seconds 4, non -destructive detection of steel pipe supplement welding seams, steel bands, welded welds and ring seams should be Perform X -ray or ultrasonic inspection. For the spiral welding seams for the steel direction for combustible ordinary fluid transportation, 100%SX rays or ultrasonic inspections shall be performed. The spiral welding seams of steel pipes used in ordinary fluid transportation for water, sewage, air, heating steam should be performed. Ultrasonic inspection spot check (20%).
Raws li cov txiaj ntsig ntawm kev tshuaj xyuas zoo ntawm cov kav hlau kauv, cov kav hlau kauv yog feem ntau muab faib ua peb pawg: cov khoom tsim nyog, kho thiab cov khoom pov tseg. Cov khoom tsim nyog xa mus rau cov kav hlau kav uas ua tau raws li cov qauv tsim nyog lossis cov txheej txheem ntawm kev xa khoom lees txais sab nrauv thiab sab hauv zoo; kev kho yog hais txog qhov zoo ntawm qhov zoo thiab qhov zoo ntawm kev kho. Kauv steel kav; pov tseg yog hais txog qhov tsis tsim nyog cov tsos thiab qhov zoo ntawm lub hauv paus, thiab cov kav hlau txuas nrog cov qauv thiab kev lees paub tseem tsis tau tso cai los kho lossis kho.
