Industrial non-refillable welded steel cylinder applications

This standard specifies the type, design, manufacturing, inspection rules and test methods, marking, coating, etc. of industrial non-refillable welded steel cylinders (hereinafter referred to as steel cylinders). This standard is suitable for use at ambient temperature of -40℃~60℃, test pressure PT≤6.2MPa (gauge pressure), volume V≤25 L (when P<subscript T>3.5 MPa, V≤5 L) , Non-refilling toxicity is classified as Class A refrigerant (low pressure liquefied gas) according to GB/T 7778.