• Oerflak rûchheid Ra < 0,5 μm
• Standert tolerânsje: ASTM A269, of D4 / T4
• Strength - Tensile, Burst
• hurdens - Rockwell, Micro
• Soundness - Eddy Current, Ultrasonic
• Leak & Strength - Hydrostatic
• Leak - Air Under Water
• Bend Testing - Reverse Bending, Flattening, Reverse Flattening, Flange
• Dimensional - OD, Wall, Rjochtheid
• Metallurgysk - nôtgrutte, sensibilisaasje, korrosysje, fazebalâns / yntermetallysk, metallografysk