DIN - Lub koom haum Deutsches rau Normung - Lub koom haum German rau Standardization
Zoo ib yam li Brazilian tus qauv NBR 5580.
Cov txheej txheem no tsim cov kev cai rau kev tsim thiab muab cov pa roj carbon steel raj, nrog lossis tsis muaj zinc txheej tiv thaiv.
Cov pa roj carbon steel raj ntawm cov ntu ntu, nrog lossis tsis muaj seam.
Tag nrho cov pa roj carbon steel raj tau muab cais tawm hauv cov qauv no yog raug rau kev ntsuas siab hydrostatic.
Daim ntawv thov ntawm DIN 2440 steel raj:
Cov pa roj carbon steel raj ntawm lub voj voog, nrog lossis tsis muaj seam, feem ntau yog siv rau hauv kev ua cov kua dej uas tsis muaj corrosive.
Siv nyob rau hauv conduction ntawm dej, roj, chav thiab lwm yam uas tsis yog-corrosive kua.
