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GB/T 13747.7-2019
Methods for chemical analysis of zirconium and zirconium alloys—Part 7：Determination of manganese content—Patassium periodate spectrometry and inductively coupled plasma atomic emission spectrometry
GB/T 13747.2-2019
Methods for chemical analysis of zirconium and zirconium alloys—Part 2：Determination of iron content—1,10-phenanthroline spectrophotometry and inductively coupled plasma atomic emission spectrometry
GB/T 13747.12-2019
Methods for chemical analysis of zirconium and zirconium alloys—Part 12：Determination of silicon content—Molybdenum blue spectrophotometry
GB/T 8647.11-2019
Methods for chemical analysis of nickel－Part 11：Determination of magnesium，aluminum，manganese，cobalt，copper，zinc，cadmium，tin，antimony，lead，bismuth contents－Inductively coupled plasma mass spectrometry
GB/T 1348-2019
Spheroidal graphite iron castings
GB/T 38347-2019
Hot-rolled wire rod of ultra-low carbon steel with high boron
GB/T 38277-2019
Brittle crack arrest high strength steel plate for ship
GB/T 38269-2019
Corrosion of metals and alloys—Accelerated cyclic corrosion tests with exposure to synthetic ocean water salt-deposition process—Dry and wet conditions at constant absolute humidity
GB/T 18579-2019
High-carbon chromium bearing steel wires
GB/T 2518-2019
Continuously hot-dip zinc and zinc alloy coated steel sheet and strip
GB/T 38250-2019
Metallic materials—Verification of the alignment of fatigue testing machines
GB/T 38235-2019
Steel wire ring panels for engineering
GB/T 38233-2019
Iron-bearing dust and sludge- Determination of lead and zinc content- Inductively coupled plasma atomic emission spectrometry
GB/T 38232-2019
Steel wire rope net panels for engineering
GB/T 38231-2019
Corrosion of metals and alloys—Test method for thermal-cycling exposure oxidation testing under high-temperature corrosion conditions for metallic materials
GB/T 38223-2019
Determination of ferrite content in austenitic stainless steel castings
GB/T 38222-2019
Metallographic examination method of medium and high strength stainless steel castings for general engineering applications
GB/T 38216.2-2019
Steel slag—Determination of fluoride content and chloride content—Ion chromatography
GB/T 38216.1-2019
Steel slag—Determination content of chromic oxide—Diphenyl carbazide spectrophotometry method
GB/T 38215-2019
Hot rolled steel strip for structural corrugated steel pipe