... , 2. MPA :0.1-39.46MPA3. Feature of metal bellows :- outside diameter :18-50mm- inside diameter :11.5-35mm- wall thickness ... -15- No.of plys : one ply double plies ,three plies ,four plies .- material: stainless steel ss304,ss321,ss316L, phosphor bronze, CuSn4, CuSn6, CuSn8 ... quality, Best ServiceIf you have any question, please contact us! Stainless steel flexible component with flange