H-67Y自密封旋启式止回阀

PZ45H法兰排渣闸阀

J6-4Y锻钢自密封截止阀

H63-Y锻钢升降式止回阀

H66-Y自密封旋启式止回阀

H43-L锻钢法兰升降式止回阀

H-66Y自密封旋启式止回阀

PZ44H法兰排渣闸阀

J6-3Y锻钢自密封截止阀

H62-Y锻钢升降式止回阀

H65-Y自密封旋启式止回阀

H42-L锻钢法兰升降式止回阀