API 5L L360 yog cov yeeb nkab steel khoom siv dav hauv kev lag luam roj thiab roj tsheb thauj mus los. Cov hlau no yog tsim los ntawm 5L tus qauv tsim los ntawm American Petroleum Institute (API), thiab muaj cov tshuaj lom neeg tshwj xeeb thiab cov cuab yeej cuab tam. L360 qhia tias cov khoom siv lub zog tsawg kawg nkaus yog 360 MPa (kwv yees li 36,000 psi), muab faib ua qhov nruab nrab - lub zog kav hlau.
Covyam ntxwv ua haujlwmAPI 5L L360 seamless steel yeeb nkab yog qhov tseem ceeb hauv cov hauv qab no:
1. High Strength: L360 qhia nws qhov tsawg kawg nkaus yield zog ntawm 360 MPa, ua rau cov yeeb nkab steel tiv taus siab siab thiab ua rau nws haum rau ntau yam siab - cov xwm txheej thauj mus los.
2. Zoo Toughness: Cov yeeb nkab steel muaj kev cuam tshuam zoo toughness thiab ductility, tswj kev ua haujlwm ruaj khov nyob rau hauv qis- qhov kub thiab txias thiab zam kev tawg tawg los ntawm qhov kub thiab txias.
3. Zoo corrosion kuj: L360 qib steel yeeb nkab tau txais kev kho mob tshwj xeeb, pom zoo corrosion kuj thiab ua kom ntev - lub sij hawm ruaj khov nyob rau hauv ib puag ncig hnyav xws li cov av noo thiab corrosive media.
4. Txhim khu kev sib txuas kev ua tau zoo: Cov kav hlau steel siv cov cuab yeej siv vuam zoo heev thiab cov txheej txheem kev sib txuas kom ntseeg tau tias muaj zog thiab airtight yeeb nkab sib txuas, zoo tiv thaiv kev sib tsoo thiab kev nyab xeeb.
5. Zoo machinability: Cov kav hlau steel yog ib qho yooj yim los txiav, khoov, thiab nruab, yooj yim rau kev tsim kho thiab tu.
Chemical Composition Requirements:
C: Tsawg dua lossis sib npaug rau 0.28 (seamless) Tsawg dua lossis sib npaug rau 0.26 (welded)
Mn: Tsawg dua lossis sib npaug rau 1.40
P: Tsawg dua lossis sib npaug rau 0.030
S: Tsawg dua lossis sib npaug rau 0.030
Cu: Tsawg dua lossis sib npaug rau 0.50
Ni: Tsawg dua lossis sib npaug li 0.50
Cr: Tsawg dua lossis sib npaug rau 0.50
Mo: Tsawg dua lossis sib npaug rau 0.15
*V + Nb + Ti: Tsawg dua lossis sib npaug rau 0.15
* Rau txhua txhua 0.01% txo cov ntsiab lus carbon, manganese cov ntsiab lus tuaj yeem nce 0.05%, mus txog qhov siab tshaj ntawm 1.65%.
Mechanical Property Requirements:
Yield zog: Ntau dua lossis sib npaug li 360 MPa
Tensile Strength: Ntau dua lossis sib npaug li 460 MPa
Tensile Strength ntawm Welded Steel Yeeb Nkab: Ntau dua lossis sib npaug li 460 MPa
Elongation: Ntau dua los yog sib npaug rau 1940*AXC0.2/4600.9 qhov twg AXC yog tus ntoo khaub lig-sectional cheeb tsam ntawm cov qauv tensile.
API L360 Line Pipe Application Areas:
Onshore/Subsea Roj thiab Gas Sib Sau thiab Cov Kav Dej: Lub cev tseem ceeb txuas rau lub taub hau, cov chaw ua haujlwm, thiab cov ntsiab lus pib ntawm qhov ntev - cov kav dej.
Nruab nrab thiab Tsis Txaus Siab Ntev ntev-Nyob deb ntawm kev sib kis kab mob: Ua haujlwm tseem ceeb ntawm - nplai hla - kev thauj mus los hauv cheeb tsam ntawm cov khoom siv roj thiab roj.
Lub Nroog Gas Pipelines: Ib qho tseem ceeb ntawm nruab nrab - cov tshuab xa hluav taws xob siab, ua kom muaj kev nyab xeeb ntawm cov khoom siv roj rau ob qho tib si hauv tsev thiab kev lag luam.
Dej / Gas Txhaj Pipelines: Ib qho tseem ceeb engineering pipelines rau nce thiab stabilizing oilfield ntau lawm.
Industrial Gas Tsheb thauj mus los: Oxygen, nitrogen, carbon dioxide, thiab lwm yam.
Hydraulic Pipelines: Loj -tej dej hloov pauv cov dej num, fais fab nroj tsuag ncig cov kav dej (xws li kev tiv thaiv corrosion sib txawv).
Cov Khoom Siv Hluav Taws Xob: Siv lawv cov khoom siv kho tshuab zoo heev thiab huab cua tsis kam, siv hauv wharves, hauv paus, thiab lwm yam.
