1) Suitable for gas, oil, LPG 2) For absorbing axial dispancement and movement 3) For absorbing vibration Features:1) For gas, it balances and compensates ... absorption, vibration absorption and adjusting compound tube center5) Important connector for gas, oil, water with modern equipment pipeline systemsand piping projects6) ... : GB/T14525-93 and GB/T12777-91 national standard Bellows Compensator