ผลิตภัณฑ์โลหะ
เอกสารมาตรฐาน
ญี่ปุ่น
JSA
JIS Z 0311 : 2004
Metallic blast-cleaning abrasives
2004
25
Std. JISe 2020
This Japanese Industrial Standard specifies test methods of evaluating effect to water quality applicable to such equipment for water supply service as valves which include faucets, pressure reducing valves and relief valves, and pipes, fittings, piping units for dwellings, drinking-water coolers, electric storage tank water heaters, gas burning water heaters, oil burning water heaters.