GB Floating Ball Valve
Application Specification
1，The design and manufacture of standard criteria according toGB 12237
2，The structure according to GB12221 standard length standard
3，The connection flange standard criteria by JB79
4，Test and test according to Gb13927 standard
5，The main material standard according to GB1220;GB12229 Standard
6，The flange bolts standard criteria according to GB901-88