GB/T 1531-2020 Translated English of Chinese Standard. (GBT 1531-2020, GB/T1531-2020, GBT1531-2020): Copper and Copper Alloy Capillary Tube
https://www.chinesestandard.net, 8 feb 2021 - 34 páginas
This Standard specifies the technical requirements, test methods, inspection rules, signs, packaging, transportation, storage, quality certificate and order sheet (or contract) content of copper and copper alloy capillary tubes. This Standard is applicable to copper and copper alloy capillary tubes used for air conditioners, refrigeration equipment, instruments, and apparatuses.
The requirements for Vickers hardness of tube designations T2 TP1 and
Signs Packaging Transportation Storage and Quality Certificate
Air Permeability Average Grain Bulge Circle limit Chemical Composition Cleanliness of Internal conducted in accordance Copper and Copper demand-side requires Designation Code determine through negotiation determined as disqualified Deviation of Tubes diameter of reducing difference or flow Dimensional Range Allowable Dimensions and Allowable Drawing Hardening H80 Eddy Current Inspection Flanging Test Flaring Test Flow Rate Test Grain Size inner hole Inspection Results internal surface residue length microporous membrane millimeter one-way deviations order sheet Ordinary Grade Overall Dimensions pressure difference Process Properties Range Allowable Deviations Residual Stress sheet or contract shut-off valve signifies inspection item Slight Pulling H55 Softening Annealing O60 stipulations of Appendix stipulations of GB/T stipulations of Table supply-side shall determine supply-side through negotiation Surface Quality take 1 test Take 2 products tensile test test method test specimen tetrachloroethylene tubes shall comply Tubes Unit Tubes with Bulge twice the corresponding value is twice Vickers hardness test wall thickness water content YS/T