February 16, 2024
HG 20613-97 Fasteners for steel pipe flanges (American system)
HG 20634-97 Fasteners for steel pipe flanges (European system)
SHJ404-88 Sinopec standard (fasteners for pipe flanges)
HGJ 75-91 Chemical Machinery Department Standard (nut)
GD0534 Ministry of Water Resources and Electric Power Standard (thick hexagonal nut)
GD0535 Ministry of Water Resources and Electric Power Standard (hexagonal nut)
H17-67 Chemical Machinery Department Standard (nut)
JB 2770-79 Mechanical Department Standard (Pg160-320kg/cm2 joint nut)
JB 2775-79 Mechanical Department Standard (Pg160-320kg/cm2 nut)
JB 2954-81 Mechanical Department Standard (technical conditions for turbine hood nuts)
SY15-76 Shanghai Pressure Vessel Factory Standard (high pressure hexagonal nut)
DIN2510/5-74 German standard (nut)
DIN2510/6-74 German standard (long nut)
ASME/ASNIB18.2.2 American Standard (nut)