J61Y-16C手动焊接截止阀

J41W-16蒸汽专用截止阀

J41W不锈钢高压截止阀

J41W-160P高压锻钢截止阀

J41Y-16C化工部法兰截止阀

J641H-16C低压气动截止阀

J41W-16T低压黄铜截止阀

UJ41H-16C硬密封柱塞截止阀

J44Y-1500LB美标角式截止阀

J41T-10铜芯法兰截止阀

J41J-16C低压衬胶截止阀

J41H-25C硬密封截止阀