This standard specifies the product classification, requirements, test methods, test rules, and packaging, marking, transportation and storage of seamless copper tube (hereafter referred to as tube).
This standard is applicable to seamless copper tube for household air conditioner, small and medium central air conditioner and refrigeration equipment.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the document referred to applies.
GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature
GB/T 242 Metal Materials - Tube - Drift-Expending Test
GB/T 246 Metal Materials C Tube - Flattening Test
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Indexed by Acceptance Quality limit (AQL) for Lot-by-lot Inspection
GB/T 5121 (All Parts ) Methods for Chemical Analysis of Copper and Copper Alloys
GB/T 5231 Wrought Copper and Copper Alloys Chemical Composition Limits and Forms of Wrought Products
GB/T 5248 Copper and Copper Alloy-Seamless Tubes-Eddy Current Testing Method
GB/T 8888 Wrought Heavy Non-Ferrous Metal Products - Packing, Marking, Transporting and Storing
YS/T 347 Copper and Copper Alloys - Estimation of Average Grain Size
