Dab tsi yog cov qauv hauv ntiaj teb uas tau txais rau galvanized steel kav?
ASTM A53 (Asmeskas tus qauv) npog cov kev cai rau cov txheej txheem hauv ntiaj teb rau cov txheej txheem galvanizing thiab cov khoom siv roj av . JIS G3442 (Japanese txheem) Tso cov ntawv pov thawj tshwj xeeb ntawm cov qauv ua lag luam sib txawv ntawm cov khoom lag luam hauv galvanized .
Dab tsi yog qhov yuav tsum tau ntawm Tuam Tshoj tus qauv GB rau galvanized steel kav?
GB / t 3091-2015 Tshaj tawm cov qhov hnyav, cov kev ntsuas welded txheej {{6 {}} txhua qhov kev ntsuas roj av muaj qhov ua kom muaj xeb ntau dua) thiab khoov tau me ntsis qis dua li Asmeskas tus qauv {{9 {9}
Yuav ua li cas txheeb xyuas seb Galvanized Steel kav Pipes ntsib ASTM cov qauv?
Txheeb xyuas qhov thib peb ntawm cov ntawv xeem thib peb muab los ntawm cov chaw tsim tshuaj paus (xws li cov qauv siv zinc (tensile lub zog ntau dua los yog sib npaug rau 330mpa).}}}}}}}} ece {.
Yuav tsum muaj cov ntawv pov thawj zoo li cas rau galvanized steel kav?
Cov ntawv pov thawj hauv tsev yog xav tau kev lag luam tshwj xeeb rau cov roj (CSA}} . Kev soj ntsuam tuaj yeem siv los ua pov thawj tias tsis muaj cov tshuaj phem tshaj tus qauv .
Yuav tsum muaj kev sim dab tsi rau kev xa tawm galvanized steel kav?
Mandatory inspection items: zinc layer thickness (microscope method), salt spray test (500 hours), water pressure test (1.5 times working pressure). Chemical analysis: the content of heavy metals such as lead and cadmium must meet the importing country's limit. Dimension inspection: whether the outer diameter, wall thickness, and length tolerance meet the contract Kev Cog Lus . kev ntsuas ntim khoom ntxiv: txawm tias yog cov kev ntsuas ntawm Middle, piv txwv li cov ntawv pov thawj nrab, thiab Australia yuav tsum muaj ntawv pov thawj Werkark.
