[ใหม่] Two industries that require tig welding stainless steel tubes certification

Tig Welding Certification - Differences in the Pipe Welding, Aerospace, and Aviation Industries

For tig welding certification in piping, pressure vessels, and boilers, ASME section IX of the "Boiler and Pressure Vessel Code" specifies the criteria for acceptable stainless steel tubes online tests ioolyztt .

Two industries that require tig welding certification are:

Industrial piping, (including boiler tubes)

Aerospace and aviation (manufacture and overhaul/repair)

For Aerospace tig welding, the American Welding Society (AWS) D17.1 - "Specification for Fusion welding for Aerospace Applications" is the code for welded stainless steel tubes certification tests.

More often than not, a 6G position welding test is required to certify for Pipe welding jobs. On many boiler jobs, 2" heavy wall tubing is tig welded all the way out in the 6G position making the welder either switch hands, or at least get in some uncomfortable positions. That is why 6G position Tig welding tests are considered the most difficult.

Most of the time, sheet metal test pieces in the 0.020"-0.125" thickness range are used for aerospace welder qualification testing. The 6G welding test is only used occasionally because it does not accurately represent the scope of welding tasks performed for most aerospace and aviation welding applications. AWS D17.1 even has a provision for welders to certify on a scrap part or mock up of a weld that is not represented well by a plain groove or fillet weld.

One thing both welding certification specifications have in common is that the test welds that are selected to be used for certification tests only qualify the welder for a range of positions, thicknesses, and joint types. No single test qualifies for all the possible material, thickness, positions, and joint types that are possible. That is why some welders hold a dozen or more certifications.