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This standard specifies the preparation, sample preparation, inspection method and qualified indexes for pressure equipment (boiler, pressure vessels and pressure piping) product welded coupons.
This part of NB/T 47019 specifies such purchase technical specifications as the tube size, shape, mass, technical requirements, inspection and test rules, quality certificates, and so on, AND defines the duties, rights and obligations of the relevant parties.
This part of NB/T 47013 specifies the magnetic particle testing methods and quality grading requirements for the pressure equipment weld and its raw materials as well as the machined parts.
This Part of NB/T 47013 specifies the liquid penetrant testing method and quality grading of pressure Equipment. This Part applies to the testing of surface-breaking defects which are caused in the manufacture, installation and use of pressure Equipment made of non-porous metallic materials.
This standard specifies the principle, instruments and equipment, materials, test conditions and determination methods of test methods for water requirement of normal consistency, setting time and volume soundness (caused by free calcium oxide) of the portland cements.
This Standard specifies the thread form, basic size, tolerance, marking and gauge of pipe thread (NPT and NPSC) with sealed thread pair and thread form angle of 60-degree. This Standard is applicable to sealed thread connection for pipe, valve, pipe joint, cock, and other pipe fittings.
This Standard specifies the classification, requirements, test methods, inspection rules, marks, packaging, transport and storage of ball point pens and refills. This Standard is applicable to ball point pens (including refill replaceable and refill irreplaceable) and refills for general use and document writing use.
GB 2760-2011 Sound and television broadcast receivers and associated equipment—Radio disturbance characteristics—Limits and methods of measurement English-translated version
This standard specifies the general functional technical requirements of the digital mobile communication terminal (hereinafter referred to as the mobile terminal) in the single-module single standby, multi-module single standby, single-module multi-standby state, etc., AND specifies the corresponding test methods.
This Standard specifies the definition, order contents, dimensions, appearance, weight as well as allowable deviation, technical requirements, test methods, inspection rules, transport, storage, marks, and quality certificate of non-alloy steel, low-alloy steel, and alloy-steel continuous casting square and rectangular blank.