... of high-quality 6061 aluminum alloy material with larger capacity. aluminium alloy gas cylinder Our company is experienced in and qualified ... level B1,B2,B3,A1,C3,D1,D2. Presently, we can supply high pressure seamless steel cylinder, CNG cylinder for vehicle ... DOT, TUV, CCS, BV, ABS, TC,& LIOYGS. These cylinders also can be designed and processed in strict accordance with the standards ...