Mild steel plate flanges , cast stainless steel flanges , wafer-type butterfly valve, 2-piece flange-type ball valve, steel plate.
软钢板法兰，不锈钢铸板法兰，片型蝶阀， 2片式法兰型球阀， 钢板。
Mild steel plate flanges , cast stainless steel flanges , wafer-type butterfly valve, 2-piece flange-type ball valve, steel plate.
软钢板法兰，不锈钢铸板法兰，片型蝶阀， 2片式法兰型球阀， 钢板。
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