1.Corrugated pipe got ISO 2.Materail:304L,AM350,or 316L 3.Thickness: ... -0.2mm 4.Vacuum Leak Rate:1x10^-10Pa.L/S Corrugated pipe are widely used in aerospace, vacuum industry, semiconductor industry, solar ... , numerical control milling machines, and our factory introduce high-precision automatic welding machines, laser welding machines and plasma welding machines from ...