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孝感鍛鋼止回閥 Forged steel check valve H11H/Y、H61H/Y
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孝感鍛鋼止回閥 Forged steel check valve H41H/Y、H44H/Y
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孝感美標旋啟式法蘭止回閥 API Swing flanged check valve H44H/Y/W
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孝感美標對夾升降式止回閥 API Wafer type piston lift check valve H72H/Y/W
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孝感國標對夾升降式止回閥 GB Wafer type piston lift check valve H72H/Y/W
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孝感美標對夾雙瓣旋啟式止回閥 API Wafer type double disc Swing check valve H76H/Y/W
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孝感國標對夾雙瓣旋啟式止回閥 GB Wafer type double disc Swing check valve H76H/Y/W
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孝感升降式法蘭止回閥 GB Lift flanged check valve H41H/Y/W
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孝感旋啟式法蘭止回閥 Swing flanged check valve H44H/Y/W
