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    Outer diameter: 1/8" 3/8" 1/4" 1/2" Wall thickness: 0.035" ~ 0.049" Bearing pressure: 80 ~ 100Mpa Material: 316.316L.317.321 Special specification material of custom-tailored is guaranteed. Product technical standard: Conforms to ASTM A269 - 2,002 JIS G4305 GB/T 12,770 - 2,002 GB/T 12,771 - 2,000 Application scope: Used in the industry of instrument, measuring appliance, petroleum, medicine, chemical industry, water pure, and testing etc Characteristics: High precision, good smooth finish, even pipe wall, corrosion-resisting and heat resistance etc