Gb T 12769 2015 Translated English Of Chinese Standard Gbt 12769 2015 Gb T12769 2015 Gbt12769 2015

This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage, quality certificate and contract (or purchase order) of titanium-clad copper bar. This standard is applicable to titanium-clad copper bar (hereinafter referred to as composite bar) used in the manufacture of metal anode electrolyzer and other applications produced by hot-extrusion, hot-extrusion stretching, explosive composite, or explosive composite hot-rolling.

This Standard specifies the requirements, test methods, inspection rules, and symbols, packaging, transport, storage and quality certificate for the mixed rare earth oxide of ion-absorbed type rare earth ore. This Standard is applicable to the mixed rare earth oxide of ion-absorbed type rare earth ore prepared by using the chemical method, where ion-absorbed type rare earth ore is used as the raw material. The mixed rare earth oxide of ion-absorbed type rare earth ore is mainly used as the raw material for grouping rare earth aggregates or separating single rare earth compounds.

This Standard specifies the requirements, test methods, inspection rules, marking, package, transportation, storage, order sheet (or contract), and the like contents of seamless copper alloy tube for condenser and heat-exchanger. This Standard is applicable to the seamless copper alloy tubes used by thermal power generation, ship, offshore oil, machinery, chemical and other industrial sectors to manufacture heat-exchanger and condenser.

This Standard specifies the terms, definitions, components, materials, grading, code, technical requirements, test methods, inspection rules, packaging, mark, transportation and storage of white Portland cement. This Standard is applicable to the production and application of white Portland cement.

This Standard specifies nominal diameters for pressure vessels. This Standard applies to cylindrical pressure vessels. This Standard is not applicable to gas cylinders.

This Standard specifies the classification, grade, ordering contents, dimension, appearance, weight and allowable deviation, technical requirements, test methods, inspection rules, package, mark, and quality certificate, etc. for the non-alloyed steels and alloyed structural steels for cold heading and cold extruding.

This Standard specifies the type and dimension, technical conditions and markings of hexagon nuts, style 1.

This Standard specifies the hot acid etching method, cold acid etching method (including dendrite corrosion method), and electrolytic etching method, which test the macrostructure and defect of steel. This Standard is applicable to the acid etching test of the macrostructure and defect of steel. Other material acid etching test can be implemented as per this Standard.