Cov kav hlau ERWyog ua los ntawm cov hluav taws xob tsis kam zaus tsawg lossis zaus siab "tsis kam". Lawv yog cov kav dej puag ncig vuam los ntawm cov ntawv hlau nrog cov seams ntev. Nws yog siv los thauj cov roj thiab cov khoom kua xws li roj thiab roj av, thiab tuaj yeem ua tau raws li ntau yam kev xav tau ntawm siab thiab qis siab. Tam sim no nws nyob hauv txoj haujlwm tseem ceeb hauv kev thauj mus los.cov kav dejnyob hauv ntiaj teb no.
Thaum twgvuam ERW yeeb nkab, cua sov raug tso tawm thaum tam sim no ntws los ntawm qhov chaw sib cuag ntawm thaj chaw vuam. Nws ua kom ob sab ntawm cov hlau sov mus txog rau qhov uas ib sab tuaj yeem tsim kev sib txuas. Hauv qhov no, nyob rau hauv qhov kev sib koom ua ke, cov npoo ntawm cov yeeb nkab dawb paug raug yaj thiab extruded ua ke.Feem ntauCov kav dej ERWmuaj qhov siab tshaj plaws sab nraud ntawm 24 nti (609 mm), cov kav dej loj dua yog ua los ntawm kev siv SAW.
Muaj ntau cov kav dej uas tuaj yeem ua tau siv txoj kev ERW. Hauv qab no peb teev cov qauv feem ntau hauv kev plumbing.ERW ASTM A53 Qib A thiab B cov kav hlau carbon (thiab galvanized) ASTM A252cov kav hlau carbonASTM A500 cov kav dej ASTM A134 thiab ASTM A135 cov kav dej EN 10219 cov kav dej S275, S355. ERW Cov Kav Hlau Stainless ASTM A269 Cov Qauv & Cov Lus Qhia Tshwj Xeeb ASTM A270 Cov Kav Hlau Stainless ASTM A312 Cov Kav Dej ASTM A790 Cov Kav Hlau Stainless Ferritic/Austenitic/Duplex Cov Kav Hlau Stainless. API ERW kab yeeb nkab API 5L B txog X70 PSL1 (PSL2 yuav tsum yog HFW txheej txheem) API 5CT J55/K55, N80 casing thiab tubing.
Daim ntawv thov thiab kev siv cov yeeb nkab ERW: Cov yeeb nkab ERW yog siv rau kev thauj cov roj thiab cov khoom ua kua xws li roj thiab roj av, thiab tuaj yeem ua tau raws li qhov xav tau qis thiab siab. Nyob rau hauv xyoo tas los no, nrog rau kev txhim kho ntawm ERW thev naus laus zis, ntau thiab ntau cov yeeb nkab ERW tau siv rau hauv cov roj thiab roj teb, kev lag luam tsheb, thiab lwm yam.
Lub sijhawm tshaj tawm: Plaub Hlis-12-2023