I-American Standard A992 H icandelo lentsimbi luhlobo lwentsimbi ekumgangatho ophezulu eveliswa ngumgangatho waseMelika, odume ngamandla ayo aphezulu, ukuqina okuphezulu, ukuxhathisa okuhle kwe-corrosion kunye nokusebenza kwe-welding, kwaye isetyenziswa ngokubanzi kwimimandla yokwakha, ibhulorho, inqanawa, ...
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