Gb T 7737 2007 Translated English Of Chinese Standard Gbt 7737 2007 Gb T7737 2007 Gbt7737 2007

This Standard specifies technical requirements, test methods, inspection rules, packaging, storage, marks and quality certificate of ferroniobium. This Standard is applicable to ferroniobium that is made from niobium pentoxide and niobium concentrate and is used for steelmaking or casting as an additive, for electrode as alloying agent, magnetic material.

This standard specifies the general principles for direct visual testing and remote visual testing when using the visual testing to determine whether the product complies with the specified requirements (e.g., surface condition of the workpiece, alignment of the mating surface, shape of the workpiece). This standard does not apply to the use of any other destructive or nondestructive testing methods to carry out testing activities. The basic rules applicable to the application of non-destructive testing as specified in GB/T 5616 apply to this standard.

This Standard is applicable to the determination of the grain-sizes of various minerals specified in GB 2007.1.

This Standard specifies the following contents relevant to coal analysis test: terms and definitions, symbols, analysis test of coal sample, solution concentration, determination, test result expression, result conversion, method precision and test record. This Standard is applicable to various coal analysis test method standards, documents, books and periodicals, teaching materials and manuals.

This Standard specifies the dimensions, shape, technical requirements, test methods, inspection rules, packing marks, and certificate quality of stainless steel bars (generic terms of round steel, square steel, flat steel, hexagonal steel and octagonal steel. This Standard is applicable to the hot rolled and forged steel bars of which the dimension (diameter, side length, thickness or subtense distance) is no more than 250mm. Through negotiations of both the Supplier and Buyer, it may also supply the hot rolled and forged steel bars of which the dimension is more than 250mm.

This Standard specifies the designations, technical requirements, test methods, inspection rules, packaging, marking, storage, transport, and quality certificates of silica fume products. This Standard applies to the silica fume that is collected by dry dust collectors from oxidized and agglomerated silica-bearing fume that is gathered by the fume hood of electric-furnace in ferrosilicon or industrial silicon production.

This General Rule is applicable to the selection of samples for the inspection the chemical composition, water content, particle size and other physical items of batches of fluorspar (i.e., fluorite), alumina, talc, manganese ore, iron ore, chromium ore in bulk. Other bulk mineral products such as: barite, magnesia, feldspar, clay, plaster, limestone, dolomite, magnesite, etc. can also be implemented by reference. When formulating a manual sampling method standard for a particular bulk mineral product, this general rule should be used as a guiding document.

This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation, storage and contract contents of copper and copper-alloy cold-drawn rod and bar.