GB/T 38938-2020
High strength and low expansion alloy
GB/T 12718-2009
High-tensile steel chains ( round link ) for mining
NB/T 10953-2022
High strength and ultra high strength steel plates with good weldability for powered support in coal mine
DB14/T 2471-2022
MH/T 3025-2013
Etch inspection of high strength steel parts
WJ/T 9020-1994
MT/T 929-2004
JC 498-1991
GB/T 12718-2001
High-tensile steel chains(round link) for mining
HB 5480-1991
DB63/T 1110-2012
T/QGCML 755-2023
DB63/T 1111-2012
T/FSI 068-2021
GB/T 1230-1991
High strength plain washers for steel structures
T/NBHTA 003-2021
T/EJCCCSE 037-2024
T/CASME 98-2022
T/NHXY 9-2022
T/ZZB 1458-2019