Reinforcement Pad

gapeee...

Your question makes no sense.....IMHO, you should stand way back during startup

Following commonly used piping codes and assuming carbon steel materials, a run pipe of 2900 mm with a 19 mm wall thickness will not sustain 22 bar internal pressure.

You will need a wall thickness closer to ~100 mm

Furthermore, your D/t will be: 2900/19 or ~152. And since this ratio is > 100, the piping code rules do not apply and localized buckling effects must be considered.

(See "Tubular Steel Structures, Theory and Design"; Troitsky - Linclon Arc Welding Books)

Seamless pipe ?/?? at 2900 mm diameter......Where is your typo ?

Hi and th's for your answer,you are true ,my aim of header is not pipe,it's a drum with this od and 19 mm thickness,and the branches is a nozzle connected to the drum,

it's a steam line 22 bar and 220 degree ce...

th's if you help me?

good wishes

I think the drum has the same problem as the pipe: too thin for the pressure.

The ASME Boiler and Pressure Vessel Code has a section on nozzle reinforcement. It includes a cross-sectional drawing that shows 5 areas that must add up to the necessary part of the shell that has been removed. Unfortunately, I don't have a copy (just winging it from memory of pressure vessel days of yore).