1.Corrugated pipe got ISO 2.Materail:304L,AM350,or 316L 3.Thickness: ... .2mm 4.Vacuum Leak Rate:1x10^-10Pa.L/S Corrugated pipe are widely used in aerospace, vacuum industry, semiconductor industry, solar ... welding machines from Korea, and also imported Korean stamping equipments. For better quality test of the welded bellows, it also equipped ...