MANUALLY OPERATED BALL VALVES AND CLOSED BOTTOM TAPER PLUG VALVES FOR GAS INSTALLATIONS FOR BUILDINGS.
建筑燃气装置用手动球阀和闭底锥形旋塞阀

1999-03-17

MANUALLY OPERATED BALL VALVES AND CLOSED BOTTOM TAPER PLUG VALVES FOR GAS INSTALLATIONS FOR BUILDINGS.
建筑燃气装置用手动球阀和闭底锥形旋塞阀

1998-04-30

Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
建筑燃气装置用手动球阀和闭底锥形旋塞阀

2015-12-31

Manually operated ball valves and closed bottom taper plug valves for installations using gaseous fuels with a maximum operation pressure (MOP) up to 5 bar of nominal size greater than 50 mm and smaller than 100 mm.
手动操作球阀和封闭式底部锥形旋塞阀 用于使用气体燃料的安装 最大工作压力（MOP）不超过5 bar 标称尺寸大于50 mm 小于100 mm

1998-04-30