HG/T 20634-2009
钢制管法兰用紧固件(Class系列)
Bolting for use with steel pipe flanges (Class designated)
2009-02-05
HG/T 20613-2009
钢制管法兰用紧固件(PN系列)
Bolting for use with steel pipe flanges (PN designated)
2009-02-05
SH/T 3404-2013
石油化工钢制管法兰用紧固件
Fasteners for steel pipe flanges in petrochemical industry
2013-10-17
HG/T 20635-2009
钢制管法兰、垫片、紧固件选配规定(Class系列)
Specification for selection of steel pipe flanges,gaskets and bolting (Class designated)
2009-02-05
HG/T 20614-2009
钢制管法兰、垫片、紧固件选配规定(PN系列)
Specification for selection of steel pipe flanges,gaskets and bolting (PN designated)
2009-02-05
GB/T 9125.1-2020
钢制管法兰连接用紧固件 第1部分：PN系列
Fasteners for steel pipe flange joints—Part 1:PN designated
2020-09-29
GB/T 9125.2-2020
钢制管法兰连接用紧固件 第2部分：Class系列
Fasteners for steel pipe flange joints—Part 2：Class designated
2020-07-21
GB/T 43079.2-2023
钢制管法兰、垫片及紧固件选用规定 第2部分：Class系列
Specification for selection and matching of steel pipe flanges, gaskets and fasteners—Part 2: Class designated
2023-09-07
GB/T 43079.1-2023
钢制管法兰、垫片及紧固件选用规定 第1部分：PN系列
Specification for selection and matching of steel pipe flanges, gaskets and fasteners—Part 1:PN designated
2023-09-07
NB/T 47027-2012
压力容器法兰用紧固件
Stud blots & nuts for body flange
2012-11-09
JB/T 4707-2012
压力容器法兰用紧固件(同NB/T 47027-2012)
ISO 6305-4-1985
Railway components — Technical delivery requirements — Part 4: Untreated steel nuts and bolts and high-strength nuts and bolts for fish-plates and fastenings
铁路部件——交货技术要求第4部分:鱼尾板和紧固件用未经处理的钢制螺母和螺栓以及高强度螺母和螺栓
1985-11-07