Thanks a million for your response.
Actually，the end type of valve is VIAR LOCK hub type with clamps，and valve body is 3 pieces(2 hub ends + 1 body). In this case，two more question need your help
1）Is A-182 F316/316L suitable for materials of clamp？should be 60K minimum or not；
2）Hence they...
What is the work scope of technical manager? Take in charge all designers, arrange design works, or review plan & DOCs?
Are there corresponding study courses or books?
Thanks
Sean
Can ASTM A-182 F316/316L material be used for ball valve body which follows API 6A standard and 10,000psi rating ?
API 6A table-7 shows body material designations for pressure rating 69.0MPa(10,000psi) is 36K,60K,75K,NS while the yield strength of ASTM A-182 F316/316L is 205 MPa(30K). So this...
By the way，is my understand right for the PWHT exemptions for P-No. 1 material in table 331.1.3
a）thickness＞25mm：preheat of 25℃ + multiple layer welds
b）thickness 5～25mm：multiple layer welds
c）thickness ≤5mm：not mentioned in the standard
