Dab tsi yog cov lus xaus rau API 5L X52 kav dej txhais tau li cas?

Cov lus kawg ntawm API 5L X52 cov kav dej yog raws li hauv qab no thiab lawv lub ntsiab lus:
Suffixes qhia txog kev xa khoom
N: stands rau normalizing xwm txheej. Piv txwv li, X52N txhais tau hais tias cov yeeb nkab tau normalized. Normalizing tuaj yeem kho cov nplej, kom cov yeeb nkab muaj lub zog zoo, toughness thiab qaug zog tiv thaiv, thiab lwm yam, thiab feem ntau yog siv rau qee lub sijhawm uas yuav tsum muaj rau kev ua tau zoo.
M: stands rau deformation tshav kub kev kho mob raws li txoj cai. Los ntawm kev sib xyaw ua ke ntawm cov txheej txheem thermal deformation tshwj xeeb thiab cov txheej txheem kho cua sov, lub zog thiab lub zog ntawm cov yeeb nkab tuaj yeem txhim kho ntxiv, uas yog tsim rau kev kub siab, kev thauj mus los thiab lwm yam xwm txheej nrog rau cov kev xav tau siab rau cov yeeb nkab kev ua haujlwm.
Q: stands rau quenching thiab tempering xwm txheej. quenching tuaj yeem txhim kho lub zog ntawm cov yeeb nkab, thiab tempering tuaj yeem tshem tawm quenching kev ntxhov siab, txhim kho toughness thiab plasticity, kom cov yeeb nkab muaj cov cuab yeej zoo txhua yam, thiab feem ntau siv rau hauv kev ua haujlwm tshwj xeeb nrog kev xav tau siab rau lub zog thiab toughness.
Suffix qhia cov khoom specification qib
PSL1: Qhov no yog lub cim ntawm cov khoom specification qib 1. PSL1 muaj cov kev cai yooj yim rau cov tshuaj muaj pes tsawg leeg, mechanical zog, dimensional tolerances, thiab lwm yam ntawm cov yeeb nkab, thiab yog haum rau ntau pa daim ntaub ntawv xws li dav siv roj thiab roj pipelines.
PSL2: Lub cim ntawm cov khoom specification qib 2. Piv nrog PSL1, PSL2 muaj kev tswj nruj dua ntawm cov tshuaj muaj pes tsawg leeg, thiab muaj cov kev xav tau ntau dua rau cov khoom tensile, cuam tshuam lub zog, tsis muaj kev puas tsuaj thiab lwm yam ntsuas. Nws feem ntau yog siv nyob rau hauv ib puag ncig hnyav, ntau txoj kev xa tawm xov xwm, lossis lub sijhawm muaj kev xav tau siab dua rau kev nyab xeeb thiab kev ntseeg siab, xws li submarine roj thiab cov kav dej.