Designed for vacuum,high vacuum,electronic,nuclear,semiconductor etc industry. welded metal bellow Features:1)High temperature resistance2)Anti-corrosion3)High sealing performance4)Good sensitivity5)Big extension ratio6)Widely used materialsOperating conditions:1) Temperature: -200 ~ 450°C, or according to material performance2) Vacuum leak rate:1x10-4 to 1 x10-10 Pa.L/S3) COMPRESSION ...