GB/T 3287-2024 Malleable cast iron pipe fittings

GB/T 3287-2011 Malleable cast iron pipe fittings

GB/T 192-2003 General purpose metric screw threads—Basic profile GB/T 193-2003 General purpose metric screw threads—General plan GB/T 196-2003 General purpose metric screw threads—Basic dimensions GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances GB/T 2828.1-2003 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2829-2002 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability) GB/T 4956-2003 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness-Magnetic method GB/T 7306.1-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 1:Parallel internal and taper external threads GB/T 7306.2-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 2:Taper internal and external threads GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads GB/T 9440-1988 Malleable iron castings GB/T 9440-2010 Malleable iron castings GB/T 10125-1997 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 10125-2012 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 10125-2021 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 12689.1-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of aluminum content—The chromazurol S-polyethylene glycol octyl phenylether-cetylpyridine bromine spectrophotometric method and the EDTA titrimetric method GB/T 12689.1-2010 Methods for chemical analysis of zinc and zinc alloys—Part 1:Determination of aluminum content—Chromazurol S polyethylene glycol octyl phenylether-cetylpyridine bromine spectrophotometry,Chromeazurol S spectrophotometric method and EDTA titrimetry GB/T 12689.2-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of arsenic content—The atomic fluorescence spectrometer method GB/T 12689.3-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of cadmium content—The flame atomic absorption spectrometric method GB/T 12689.4-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of copper content—The lead diethyldithio-carbamate spectrophotometric method and the flame atomic absorption spectrometric method and the electrolytic method GB/T 12689.5-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of iron content—The sultosalicylic acid spectrometric method and the flame atomic absorption spectrometric method GB/T 12689.6-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of lead content—The oscillopolarographic method GB/T 12689.7-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of magnesium content—The flame atomic absorption spectrometric method GB/T 12689.7-2010 Methods for chemical analysis of zinc and zinc alloys—Part 7:Determination of magnesium content—Flame atomic absorption spectrometric method GB/T 12689.8-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of silicon content—The molybdenum blue spectrophotometric method GB/T 12689.9-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of antimony content—The atomic fluorescence spectrometer and the flame atomic absorption spectrometric method GB/T 12689.10-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of tin content—The phenylfluorone-cetyltrimethyla-mmonium bromide spectrophotometric method GB/T 12689.11-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of lanthanum and cerium contents—The tri-bromide arsenazo spectrophotometric method GB/T 12689.12-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of lead,cadmium,iron,copper,tin,aluminium,arsenic,stibium,magnesium lanthanum and cerium contents—The inductively coupled plasma-optical emission spectrometric method GB/T 13825-1992 Metallic coatings—Determination of the mass for hot dip galvanized coatings on ferrous materials—Gravimetric method GB/T 13825-2008 Metallic coatings—Hot dip galvanized coatings on ferrous materials—Gravimetric determination of the mass per unit area GB/T 36488-2018 Determination of polycyclic aromatic hydrocarbons in coatings GB/T 196-2025 General purpose metric screw threads—Basic dimensions GB/T 192-2025 General purpose metric screw threads—Profiles GB/T 4956-2025 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness—Magnetic method