J61Y锻钢低温截止阀800Lb

J41Y锻钢法兰截止阀,锻钢截止阀

J61Y锻钢自密封截止阀900Lb~2500Lb1

J65Y锻钢Y型自密封截止阀900Lb~2500Lb

J61Y锻钢自密封截止阀900Lb～2500lb

J61Y锻钢截止阀

Z61Y低温锻钢闸阀

Z41H锻钢法兰端闸阀,锻钢闸阀

Z61Y自密封锻钢闸阀,自密封闸阀

Z61Y锻钢闸阀,焊接式闸阀

Z61W高压锻钢闸阀,高压闸阀

H11H升降式止回阀900LB~1500LB