A. Cov yeeb nkab ua haujlwm tau txais ob-sided submerged arc kauv yeeb nkab. Kev kam rau siab thiab kev ua tau zoo ntawm nominal txoj kab uas hla thiab sab nraud txoj kab uas hla ntawm cov yeeb nkab yuav tsum ua raws li GB / T9711-2017, thiab qhov tsis zoo sib txawv tsis raug tso cai.
B. Cov khoom siv yog Q235B, thiab cov kauv welded steel yeeb nkab yuav tsum tau siv cov coiled daim hlau los tsim cov welded steel kav. Txhua lub yeeb nkab yuav tsum tau welded los ntawm tag nrho cov coiled phaj, thiab ob los yog ntau dua coiled phaj yuav tsum tsis txhob spliced ua ke. Qhov ntev ntawm cov yeeb nkab steel Qhov ntev ntawm txhua cov yeeb nkab yog 12m, thiab cov phab ntsa tuab ntawm cov yeeb nkab yuav tsum tsis muaj qhov sib txawv.
C. Kev xav tau rau seamless steel kav:
Qhov luaj li cas, cov duab, qhov hnyav, qhov sib txawv, cov khoom siv, thiab lwm yam ntawm seamless steel kav ua raws li cov kev cai ntawm GB/T8163-2018. Cov khoom yuav tsum tau 20 # steel.
D. Ob qhov kawg ntawm cov yeeb nkab steel yuav tsum yog perpendicular mus rau axis ntawm cov yeeb nkab steel, txoj kab nqes yuav tsum tsis txhob siab tshaj 5 hli, thiab qhov siab ntawm sab hauv thiab sab nraud burrs yuav tsum tsis txhob ntau tshaj 0. 5mm ib.
E. Nto zoo: Raws li cov txheej txheem tsim khoom ntawm cov yeeb nkab, cov yeeb nkab sab hauv thiab sab nraud ntawm cov yeeb nkab yuav tsum du, thiab tsis raug xws li folding, tawg, delamination, lap welding, thiab lwm yam. Thickening ntawm weld phab ntsa thickness yog tso cai.
F. Ua haujlwm steel kav yuav tsum ua raws li:
Qhov saum npoo ntawm cov yeeb nkab steel ua haujlwm yuav tsum tau pretreated kom tshem tawm xeb, dov nplai, roj, plua plav, xim, ya raws lossis lwm yam kab mob. Qib tshem tawm xeb ntawm sab nrauv ntawm cov yeeb nkab steel ua haujlwm yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm Sa2.5 hauv GB / T8923.1.
G. Thaum cov khoom tuaj txog, muaj cov ntaub ntawv pov thawj zoo xws li steel yeeb nkab Hoobkas daim ntawv pov thawj, daim ntawv teev cov khoom thiab cov ntaub ntawv soj ntsuam (xws li hydrostatic test, ultrasonic thiab X-ray).
H. Lifespan: Lub neej kev cia siab ntawm cov yeeb nkab rwb thaiv tsev ntawm qhov kev ua haujlwm tas li ntawm 130 degree tsis tsawg dua 30 xyoo.
Ua raws li cov qauv siab tshaj plaws tam sim no ntawm cov kev lag luam cuam tshuam hauv lub tebchaws.
