About 304/304l stainless steel tubing
304/304l stainless steel tubing undergoes stringent quality inspections at the factory prior to shipment, including destructive and non-destructive inspections. This 9-point quality inspection checks:
Strength - stretch, burst
Hardness - Rockwell Hardness, Microhardness
Robustness - Eddy Current, Ultrasonic, X-Ray
Leakage and Strength - Hydrostatic Pressure
Leaks - submerged air, pressure decay
Bend Test - Reverse Bend, Flattening, Reverse Flattening, Flange
Dimensions - OD, Wall Thickness, Straightness
Metallurgy - Grain Size, Sensitization, Corrosion, Phase Equilibrium/Intermetallics, Metallography