The verification, filling, inspection, testing and maintenance of cylinders for storage and transport of compressed gases, Part 4: Welded cylinders - Insulated
压缩气体储存和运输用气瓶的验证、填充、检验、试验和维护第4部分:焊接气瓶-绝缘
Specifies requirements for welded cylinders of water capacity not less than 0.1 kg and not greater than 500 kg that are insulated (in particular those manufactured to specification DOT 4L), and intended for storage and transport of fluids. These fluids are generally cryogenic.