have a question I can use a material API 5L gr B to qualify welders and welding procedure, and then I would serve for materials used in production API 5L grade X70, as they have the same p No. but different tensile strength,
I am working with the welding procedure qualification for a steam pipe line P91 to P22 materials, anyone can help with any procedure, experience or information on working with these types of materials.
I would also like to know which one to select pipe diameter to qualify this procedure from 2...