Cov kev sib tw tseem ceeb ntawm cov khoom no yog nyob rau hauv nws cov kev cai qis -alloy metallurgical formula thiab fine grain heat treatment process. Los ntawm kev tswj hwm cov sulfur, phosphorus thiab lwm yam tsis zoo thiab ntxiv cov kab hlau rhuav tshem xws li manganese thiab niobium, cov khoom lag luam paub txog ultra-high notch toughness under ultra-low temperature. Cov pa roj carbon zoo tib yam cov kav dej muaj qhov ua rau muaj kev ntxhov siab thiab nrawm nrawm nrawm ntawm vuam seams, khawb qhov chaw thiab corrosion tsis zoo nyob rau hauv qis - qhov kub thiab txias, ua rau tam sim ntawd cov raj xa dej tawg thiab nruab nrab to. Hauv qhov sib piv, qhov qis no - alloy steel yeeb nkab tswj tau zoo heev Charpy cuam tshuam tsis kam ntawm -40℃tsis tshua muaj kub, uas tuaj yeem cuam tshuam kev tawg tawm ntawm cov qauv kev ua haujlwm thiab tshem tawm cov kev pheej hmoo ntawm cov kav dej hauv thaj chaw txias.
Nyob rau hauv cov nqe lus ntawm cov qauv thiab kev ua tau zoo, cov khoom sib xyaw ua ke qis -kub toughness, siab tsis kam thiab corrosion kuj. Tom qab standardized normalizing tshav kub kev kho mob, lub sab hauv hlau qauv yog uniform thiab ruaj khov, tsis muaj residual dov kev nyuaj siab, kom ntseeg tau zoo ib yam li txhua yam kev ua tau zoo ntawm cov yeeb nkab lub cev thiab vuam seam. Nws muaj kev tiv thaiv zoo rau sulfide kev nyuaj siab tawg thiab hydrogen-induced cracking, adapting rau composite hnyav ib puag ncig xws li alpine saline-alkali av, permafrost thiab tshuaj lom neeg av. Cov khoom lag luam tuaj yeem ua tau zoo nrog 3LPE tiv thaiv- txheej txheej corrosion, paub txog kev tiv thaiv dual ntawm qis- kub tiv thaiv- kev ua haujlwm nkig thiab sab nraud tiv thaiv- corrosion, zoo heev txhim kho lub sijhawm ntev - lub sijhawm ua haujlwm ruaj khov ntawm faus cov kav dej hauv cheeb tsam txias.
Ua raws li ASTM A333, API 5L thiab lwm cov qauv kev lag luam thoob ntiaj teb, cov khoom lag luam tau ua tiav cov kev qhia tshwj xeeb los ntawm me me - txoj kab uas hla seamless kav mus rau loj - txoj kab uas hla welded kav, txhawb customized phab ntsa thickness thiab toughness qib raws li qhov project tsim kub thiab siab tsis. Txhua pawg ntawm cov khoom xa tawm tau dhau los ua nruj qis- qhov ntsuas kub qhov ntsuas qhov ntsuas thiab tag nrho- kev tshuaj xyuas cov tshuab ua haujlwm, nrog cov ntaub ntawv pov thawj Askiv thiab cov ntawv xeem, ua tau raws li cov qauv xaiv cov khoom nruj ntawm siab -latitude txias- cov haujlwm hauv cheeb tsam hauv Central Asia, Northern Europe, Canada thiab Russia.
Raws li lub ntiaj teb no txias- cheeb tsam lub zog thiab kev tsim kho vaj tse txuas ntxiv mus, qhov kev thov rau huab cua huab cua - cov ntaub ntawv pov thawj muaj zog nce ntxiv. Lub Notch Toughness Tsawg Alloy Carbon Steel Yeeb Nkab muab kev txhim kho kev nyab xeeb kev daws teeb meem rau qis -kub pipeline engineering, txo cov nqi kho kav dej thiab kev ua haujlwm tsis ua haujlwm thoob plaws hauv lub neej, thiab muaj kev lag luam dav dav hauv kev lag luam thoob ntiaj teb kev lag luam ib puag ncig engineering.
