Q42Y形三通球阀Q42

J61YJ61Y高温高压针型阀

J21BJ21B外螺纹氨用截止阀

J11BJ11B内螺纹氨用截止阀

J42BJ42B角式氨用截止阀

J41BJ41B氨用截止阀

JY41WJY41W不锈钢氧气截止阀

J61Y、J961YJ61Y、J961Y高温高压焊接截止阀

J61YJ61Y高温高压焊接截止阀

J11WJ11W不锈钢内螺纹截止阀

J11WJ11W苏式内螺纹截止阀

VQ47,VQ40 VVQ47,VQ40 V型球阀