GB/T 22560-2008
Gas nitrocarburizing of iron and steel parts
GB/T 34889-2017
Carburizing or carbonitriding,quenching and tempering of steel parts
GB/T 24583.4-2019
Vanadium-nitrogen—Determination of carbon content—Infrared absorption method
YB/T 6261-2024
GB/T 19143-2017
Analytical method of element for carbon,hydrogen,oxygen and nitrogen in rock organics
HB 5022-2023
GB/T 42490-2023
Soil quality—Determination of total content and isotope ratio of organic carbon and nitrogen of soil and biological samples—Stable isotope ratio mass spectrometry
JB/T 4155-1999
GB/T 14265-2017
General rule of chemical analysis for hydrogen,oxygen,nitrogen,carbon and sulfur in metallic materials
JB/T 13023-2017
Technical requirements of nitride carbonize and oxidize multi-treatment (QPQ)
BB/T 0090-2022
JB/T 9172-1999
QJ 2781A-2004
Determination of the carbon content, the hydrogen content and the nitrogen content of carbonaceous material
DB23/T 2492-2019
HB 5022-1994
MT/T 1135-2011
Generaltechnical conditions of Carbon Molecular Sieve separation nitrogen producing device for coal mine
HB 5023-1994
JB/T 3999-2007
Carburizing or carbonitriding,post-quenching and tempering of steel parts
JB/T 8491.5-2008
Technical requirement heat treatment for machine tool parts-Part 5:Nitriding and nitrocarburzong
JB/T 9173-1999