欧美日韩在线视频一区,88国产精品视频一区二区三区,亚洲色欲综合一区二区三区,色妺妺在线视频

適用介質(zhì)：Q21F-（16-64)C 水、油品、氣 

                Q21F-(16-64)P 硝酸類 

Nominal pressure:PN1.6,2.5,4.0,6.4MPa 
Strength testing pressure:PT2.4,3.8,6.0,9.6MPa
Seat testing pressure(low pressure):0.6MPa 
Applicsble temperature:-29~150°C 

Applicsble media:Q21F-(16-64)C Water.Oil. Gas

                         Q21F-(16-64)P Nitric acid