Description

Product details

Preheating involves rising the temperature of the parent material locally, on both sides of the joint to a value above ambient. The need for preheat is usually determined by the pertinent fabrication code and verified by the weld procedure qualification test. Preheat may be required as an aid to welding for one of the four basic reasons:

Keywords

• aid
• joint
• basic
• value
• sides
• involves
• temperature
• parent material
• pertinent fabrication code
• weld procedure qualification