国产欧美日韩一区二区三区,99ri视频,欧美日韩精品在线,欧美一二区视频久久综合九色欧美综合狠狠-伊人热热久久原色播放WWW-成A人片亚洲日本久久-久久不见久久

Feature:
This valve is low pressure, quick action, fast and reliable, high temperature resistant, safe and reliable.
Parameters:
1, Media types:Steam, Oil,
2, Working pressure:0-1.6Mpa
3, Medium temperature:0-300℃
4, Nominal diameter:20-50mm
5, Connection:Thread, flange