Qhov txawv ntawm EFW thiab ERW kav dej yog dab tsi?
EFW (electrofusion welded) kavsiv cov hluav taws xob arc los fuse steel daim hlau ua ke, thaum ERW (tsis kam welded) kav siv cov cua sov ua kom fuse cov npoo ntawm cov hlau phaj ua ke.EFW cevfeem ntau yog siv rau siab - cov ntawv thov siab, thaum ERW kav yog siv rau nruab nrab - thiab qis - cov ntawv thov siab.
Dab tsi yog cov qib ntawm ASTM A672 cov kav dej?
Cov qhab nia ntawmASTM A672 cov kav dejxws li B60, C65, thiab C70. Cov qib no tau muab cais raws li cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab ntawm cov hlau.
Qhov siab tshaj plaws ua haujlwm kub ntawm ASTM A672 kav dej yog dab tsi?
ASTM A672 cov kav dejyog tsim los rau nruab nrab- qhov kub thiab txias ib puag ncig, feem ntau mus txog 400℃(752℃F), nrog rau qhov kub thiab txias nyob ntawm cov yeeb nkab qib thiab specifications.
Yuav ua li cas qhov zoo ntawm ASTM A672 steel kav yuav lav tau?
Quality assurance rauASTM A672 steel yeeb nkabyog ua tiav los ntawm kev tsis yog -kev kuaj kev puas tsuaj (NDT) txoj hauv kev, xws li kev kuaj ultrasonic, kuaj hluav taws xob, thiab kuaj cov khoom sib nqus, nrog rau kev kuaj hydrostatic, txhawm rau txheeb xyuas cov kav dej muaj peev xwm tiv taus lub siab sab hauv.
Cov kev lag luam twg siv ASTM A672 EFW steel kav?
ASTM A672 EFW steel kavyog siv dav hauv kev lag luam xws li kev tsim hluav taws xob, petrochemicals, roj thiab roj, thiab kev thauj mus los hauv dej vim lawv muaj peev xwm tiv taus siab thiab nruab nrab kub.
