1.Ntiaj teb: Yuav tsum tau kuaj dab tsi rau API 5L Gr.A kav?
Teb: Cov kev ntsuam xyuas yuav tsum muaj xws li kev sim hydrostatic los kuaj xyuas cov dej xau, kev kuaj tsis muaj kev puas tsuaj (xws li, ultrasonic lossis radiographic) txhawm rau txheeb xyuas qhov tsis xws luag, thiab kev ntsuas tshuab xws li tensile thiab khoov kuaj kom paub tseeb lub zog thiab ductility. Kev tshuaj xyuas tshuaj kuj tseem ua kom ntseeg tau tias muaj kev sib xyaw ua raws.
2.Nqe lus nug: API 5L Gr.A piv rau lwm qib zoo li Gr.B li cas?
Teb: API 5L Gr.A muaj zog qis dua piv rau Gr.B (uas muaj qhov tsawg kawg nkaus yield zog ntawm 35,000 psi lossis 241 MPa). Gr.A yog siv rau cov ntawv thov tsawg dua, thaum Gr.B muaj kev ua tau zoo dua nyob rau hauv siab dua - cov tshuab siab. Cov tshuaj muaj pes tsawg leeg kuj yuav txawv me ntsis, nrog rau Gr.B muaj kev tswj nruj dua.
3.Ntiaj Teb: Dab tsi yog cov qauv thiab qhov ntev ntawm API 5L Gr.A kav?
Teb: API 5L Gr.A cov kav dej tuaj yeem muaj ntau qhov ntau thiab tsawg, feem ntau yog li ntawm 1/8 nti mus rau 24 ntiv hauv nominal txoj kab uas hla, nrog rau phab ntsa thicknesses txhais los ntawm cov sij hawm (xws li, Teem sijhawm 40 lossis 80). Qhov ntev npaum li cas tau teev tseg hauv API 5L cov qauv, suav nrog txoj kab uas hla, phab ntsa thickness, thiab ntev.
4.Cov lus nug: Dab tsi yog cov teeb meem tshwm sim lossis kev ua tsis tiav nrog API 5L Gr.A kav?
Teb: Cov teeb meem tshwm sim muaj xws li corrosion vim tsis zoo txheej, weld defects nyob rau hauv fabricated seem, thiab mechanical puas thaum tuav. Hauv qhov chaw qis - qhov kub thiab txias, brittleness tuaj yeem tshwm sim. Kev saib xyuas kom raug, tshuaj xyuas, thiab ua raws li cov txheej txheem kev teeb tsa pab txo cov kev pheej hmoo no.
5.Nrhiav: API 5L Gr.A cov kav dej yuav tsum khaws thiab ua li cas?
Teb: Cov kav dej yuav tsum tau muab khaws cia rau ntawm qhov chaw tiaj tus, kev txhawb nqa los tiv thaiv kev khoov, thiab tiv thaiv los ntawm ya raws thiab tshuaj kom tsis txhob muaj corrosion. Thaum tuav, siv cov khoom tsim nyog xws li cranes thiab slings kom tsis txhob muaj kev puas tsuaj. Qhov kawg yuav tsum tau capped kom tsis txhob khib nyiab, thiab stacking yuav tsum tsis txhob siab tshaj qhov siab pom zoo.
