WJ41H国标波纹管截止阀

WJ41H暗杆波纹管截止阀

WJ41W不绣钢波纹管截止阀

WJ41H德标波纹管截止阀

WJ661H气动波纹管截止阀

WJ41H锻钢波纹管截止阀

J41H德标法兰截止阀

WJ41H美标波纹管截止阀

WJ45HY型波纹管截止阀

WJ44Y角式波纹管截止阀

J11H/Y锻钢螺纹截止阀

L/J47Y高压角式截止节流阀