About welding procedure?

Question

i just want to know details about welding procedure. thickness cover in pipe 2" and 6"

Answer 1

To prepare welding procedure you require the pipe material and its class, the wall thickness also, the type of fluide through the pipe, then you have to include in the welding procedure the type of weld is it uphill or downhill, the speed of welding, the type of welding rodes, and welding machines to be used , this is only a hint of some elements for what to include in the procedures

Answer 2

What is the pipe alloy? What is it's schedule? ''Wall thickness"? What is it going to be used for? Cover pass height?