API 5L Qib B Steel yog dab tsi?

API 5L Qib B steel yog cov hlau dav siv hauv cov kav dej hauv kev thauj mus los hauv kev lag luam roj thiab roj. Nws yog tsim los ntawm American Petroleum Institute los xyuas kom meej tias tag nrho cov kav hlau siv cov qauv no yog cov khoom zoo thiab kev ntseeg siab.

GR.B sawv cev rau qib ntawm cov yeeb nkab steel hauv tus qauv no, uas feem ntau yog siv rau kev thauj mus los ntawm roj thiab roj hauv nruab nrab siab thiab kub, nrog rau qhov zoo toughness thiab weldability. GR.B qib steel kav feem ntau siv cov khoom siv hlau ua rau steelmaking thiab alloy additives xws li tooj liab, chromium, npib tsib xee thiab titanium los txhim kho lawv cov kev tiv thaiv corrosion thiab kub ua haujlwm kom ntseeg tau tias lawv tuaj yeem ua haujlwm tau ntev hauv qhov chaw hnyav.
API 5L GR.B yog cov pa roj carbon tsawg lossis ultra-low-carbon microalloyed steel. Cov txheej txheem tsim khoom siv ntau cov txheej txheem siab heev hauv kev ua metallurgical, xws li lub tshuab nqus tsev degassing, nruam casting thiab lub teeb txo qis, ntau theem thermomechanical dov thiab multifunctional intermittent ceev cua txias, thiab lwm yam, kom optimize qhov huv thiab uniformity ntawm cov hlau. Qhov tsawg kawg nkaus yield zog yog 245MPa thiab qhov tsawg kawg nkaus tensile zog yog 415MPa. Nws muaj qee lub zog thiab tawv thiab tuaj yeem tiv taus qhov siab siab hauv kev thauj mus los hauv cov kav dej.
API 5L GR.B steel kav yog ib qho tseem ceeb tshaj plaws hauv cov txheej txheem kev thauj mus los ntawm cov roj thiab roj. Cov kav hlau no yuav tsum tau ua kom tau raws li cov qauv nruj thiab cov lus qhia tshwj xeeb kom ntseeg tau tias lawv tuaj yeem nyab xeeb thiab ruaj khov thauj cov roj thiab roj nyob rau hauv cov xwm txheej hnyav kom tsis txhob muaj kev sib tsoo lossis kev sib tsoo.

Mechanical zog ntawm API 5L Gr.B carbon steel yeeb nkab

L245 Carbon Steel Seamless Yeeb Nkab