34CrMo4 alloy steel provides the necessary properties for gas cylinder tubes that operate in high pressure (HP) and corrosive service conditions. Compliant with GB 18248,EN 10297 and EN 10083-3 standards, these quenched and tempered seamless tubes deliver unmatched tensile strength (≥930 MPa) and hydrogen embrittlement resistance. Ideal for CNG/LNG transport, hydrogen storage, and aerospace gas systems.