ERW cov yeeb nkab hlau yog tsim los ntawm qhov zaus qis lossis qhov zaus siab tiv taus "tsis kam". Lawv yog cov raj puag ncig welded los ntawm cov hlau phaj nrog longitudinal welds. Nws yog siv los thauj cov khoom vapor-kua xws li roj thiab roj av, thiab tuaj yeem ua tau raws li ntau yam kev xav tau siab thiab qis siab. Tam sim no, nws nyob hauv txoj haujlwm tseem ceeb hauv thaj chaw ntawm cov kav dej thauj mus los hauv ntiaj teb.
Thaum lub sijhawm vuam ERW raj, cua sov yog tsim thaum hluav taws xob ntws los ntawm qhov chaw sib cuag ntawm thaj chaw vuam. Nws ua kom ob sab ntawm cov hlau sov mus rau qhov chaw uas ib sab tuaj yeem tsim kev sib txuas. Tib lub sijhawm, nyob rau hauv qhov kev sib koom ua ke, cov npoo ntawm lub raj dawb paug yog yaj thiab zawm ua ke.
Feem ntau ERW yeeb nkab muaj qhov siab tshaj plaws OD ntawm 24 "(609mm), rau qhov loj dua cov yeeb nkab yuav raug tsim hauv SAW.
Muaj ntau cov kav dej uas tuaj yeem ua los ntawm cov txheej txheem ERW. Hauv qab no peb teev cov qauv feem ntau hauv kev plumbing.
ERW ASTM A53 Qib A thiab B (thiab Galvanized) Cov Yeeb Nkab Hlau Carbon ASTM A252 Cov Yeeb Nkab Pile ASTM A500 Cov Yeeb Nkab Qauv ASTM A134 thiab ASTM A135 Cov Yeeb Nkab EN 10219 S275, S355 Cov Yeeb Nkab
Cov Yeeb Nkab Hlau Stainless ERW / Cov Yeeb Nkab Cov Qauv thiab Cov Lus Qhia ASTM A269 Cov Yeeb Nkab Hlau Stainless ASTM A270 Cov Yeeb Nkab Huv ASTM A312 Cov Yeeb Nkab Hlau Stainless ASTM A790 Ferritic / Austenitic / Duplex Cov Yeeb Nkab Hlau Stainless
API ERW Kab yeeb nkab API 5L B txog X70 PSL1 (PSL2 yuav tsum nyob rau hauv HFW txheej txheem) API 5CT J55/K55, N80 casing thiab tubing
Daim ntawv thov thiab siv cov yeeb nkab ERW: Cov yeeb nkab ERW yog siv los thauj cov roj thiab cov khoom ua kua xws li roj thiab roj av, thiab tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm qhov siab qis thiab qhov siab 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 siv rau hauv cov roj thiab cov roj av, kev lag luam tsheb thiab lwm yam teb.