组合使用关键词、标准类型、状态与 ICS 分类，快速定位所需国家标准。
找到 5,061 条
GB/T 31931-2015
Zinc or zinc alloy coating on steel sheets or strips—Determination of hexavalent chromium content—1,5-Diphenylcarbohydrazide (diphenylcarbazide) spectrophotometric method
GB/T 31927-2015
Zinc and aluminum based coatings on steel sheets and strips—Determination of lead and cadmium contents—Inductively coupled plasma mass spectrometric method
GB/T 31926-2015
Zinc and aluminum based coatings on steel sheets and strips—Determination of lead，cadmium and chromium contens—Glow discharge atomic emission spectrometry method
GB/T 31925-2015
Ultrasonic test methods of heavy wall thickness seamless steel pipes and tubes
GB/T 31924-2015
Nickel pig iron—Determination of nickel content—The dimethylglyoxime gravimetric method
GB/T 31909-2015
Permeable sintered metal materials—Determination of the air permeability
GB/T 226-2015
Test method for macrostructure and defect of steel by etching
GB/T 14849.9-2015
Methods for chemical analysis of silicon metal—Part 9: Determination of titanium content —Diantipyryl methane spectrophotometry
GB/T 14849.7-2015
Methods for chemical analysis of silicon metal—Part 7: Determination of phosphorus content—Phosphorus molybdenum blue spectrophotometry
GB/T 13298-2015
Inspection methods of microstructure for metals
GB/T 31981-2015
Methods of sampling and sample preparation for chemical composition analysis of titanium and titanium alloy
GB/T 31969-2015
Test methods of rare earth three-band phosphors for fluorescent lamps—Measurement of phosphors application character
GB/T 31967.2-2015
Test method for physical property of rare earth permanent magnetic materials—Part 2：Determination of bending strength and fracture toughness
GB/T 31967.1-2015
Test method for physical property of rare earth permanent magnetic materials—Part 1：Determination of temperature coefficient of magnetic flux
GB/T 14849.8-2015
Methods for chemical analysis of silicon metal—Part 8: Determination of copper content—Atomic absorption spectrometric method
GB/T 17803-2015
Designation system for rare earth products
GB/T 31780-2015
Critical temperature measurement—Critical temperature of composite superconductors by a resistance method
GB/T 23802-2015
Petroleum and natural gas industries—Corrosion-resistant alloy seamless tubes for use as casing,tubing and coupling stock—Technical delivery conditions
GB/T 31527-2015
Mechanical properties measurement—Room temperature tensile test of NbTi/Cu composite superconductors
GB/T 31522-2015
Matrix to superconductor volume ratio measurement—Copper to non-copper volume ratio of Nb3Sn composite superconducting wires
