J41H法兰连接钢制直通式截止阀（国标）

YJ41W氧气截止阀

WJ41W波纹管截止阀

J41W不锈钢法兰截止阀

L44Y高压角式截止阀

J11T-16铸铁内螺纹截止阀

BJ45Y-16C保温角式截止阀

J64Y焊接型角式截止阀

J41J衬胶截止阀

不锈钢焊接截止阀

J11W不锈钢内螺纹截止阀

J45F46衬氟直流截止阀