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船用外螺紋重塊式快關(guān)閥
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GB/T597-1983船用外螺紋青銅止回閥
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船用外螺紋直角型青銅止回閥
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GB/T599-1996船用外螺紋青銅泄放旋塞閥
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GB/T598-1980船用外螺紋青銅填料旋塞閥
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GB/T596-1983船用外螺紋青銅截止止回閥
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GB/1241-1983船用外螺紋鍛鋼截止止回閥
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船用法蘭鑄鐵單排吸入截止閥箱、截止止回閥箱
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船用法蘭鑄鋼直角式舷側(cè)截止止回閥
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船用法蘭鑄鋼直通型舷側(cè)截止止回閥
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蝸輪船用鑄鐵雙偏心蝶閥
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液動(dòng)船用青銅雙偏心蝶閥
GB/T3037-1994雙偏心蝶閥 Double Eccentric butterfly valve 主要零部件材...
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