This standard specifies the type, size, technical requirements and relevant use regulations of plate-type flat-welded steel pipe flanges (European system). This standard is applicable to plate-type flat-welded steel pipe flanges with nominal pressure PNO.25MPa (2.5 bar) ~ 2.SMPa (25 bar). The plate-type flat-welded flanges specified in this standard are applicable to the two steel pipe outer diameter series B and B specified in HG20593-1997 Plate-type flat-welded steel pipe flanges (European system) HG20593-1997 Standard download decompression password: www.bzxz.net

Plate type flat welded steel pipe flange
(European system)
HG2059397
Subject content and scope of application
This standard specifies the type, size, technical requirements and relevant use regulations of plate type flat welded steel pipe flange (European system). This standard is applicable to plate type flat welded steel pipe flanges with nominal pressure PNo.25MPa (2.5bar) ~ 2.5MPa (25bzr). The plate type semi-welded flange specified in this standard is applicable to the two steel pipe outer diameter series A and B specified in [IG20592]. 23
HG 20592
HG20603
HG20604
HG20603
HG 20613
HG 20614
Reference standards
《Types and parameters of steel pipe flanges (European system)》《Technical conditions for steel pipe flanges (European system)》《Pressure and temperature grades of steel pipe flanges (European limit system)》《Welding joints and groove sizes of steel pipe flanges (European system)》《Fasteners for steel pipe flanges (European system)》《Selection regulations for steel pipe flanges, gaskets and fasteners (European system)》Flange sealing surface types and applicable scope
3.0.1 The sealing surface types of flanges are sinus surface (RF) and full plane (FF). The size and selection shall be in accordance with the provisions of Chapter 6 and 8 of HG2C592.
The sealing surface dimension f of the raised face flange is included in the flange thickness. 3.0.2 The applicable pressure and diameter ranges of various raised face flanges shall be in accordance with the provisions of Table 3.0.2. 3.0.2 Scope of application
Sealing surface type
Flange surface (RF)
Flange plane (FF)
DN10-~2000
Nominal pressure PAMPathar)
DNIO--600
DNI0-~600
Flange size 4-- and Table 4-- before the method: 41: PN.25MP: (2.5b) Plate type flat welding pivot pipe flange 4PN0.6MPa (6haj) Pole type pipe flange Table 4: FN.c.MPa1obar Plate type flat-welded pipe flange Small
FN, 6MPa (15har: Pole type flat steel pipe flange TN2.5MPa (251r: Plate type three-explosion modulation pipe flange 1 --
All surfaces
Gate—1 Plate type flat welded forged pipe method elastic (
Pipe three multiple columns
P052.0 Photo flat steel pipe injection
Screw grid hole
Screw inspection hole climbing hole
Method "Meat translation
Theory Dingqiang
Group production natural diameter
122 center
FNU.GMPa (SErar) Plate type flat welded steel pipe flange table 4
Sea connection size
"Bolt hole center
Bolt hole
Center diameter!
Screw hole:
Difference is
String
Theoretical setting
Pipe outer diameter
Table 4-3PN1.0MPa(10bar)plate type flat welded steel pipe flange connection dimensions
Screw holewwW.bzxz.Net
Center diameter
Bolt hole
Blast hole
Flange inner diameter
Zhang Lanli
Theoretical setting
Bend outer diameter||tt| |Table 4-4PN1.6MPa (16ar) Plate type flat welded steel pipe connection size
Screw hole center screw
MS3×2
Flange cover inner diameter
Flange outer diameter
Table 4-5rN2.5MPa (2Khnr) Plate type flat welded steel pipe flange connection size
Bolt center screw
Center diameter
M33×2
M33×2
Flange inner diameter| |tt||Yunlanli
S Technical requirements
The technical requirements of flanges shall be in accordance with the provisions of HG20603. 6 Maximum non-impact working pressure
The nominal pressure of flanges and the maximum non-impact working pressure at different temperatures shall be in accordance with the provisions of HG20604. Welding joints and grooves
The welding joints and groove dimensions of flange steel pipes shall be in accordance with the provisions of HC20605. 8 Fastener length
The length of the fasteners (bolts, studs) used shall be in accordance with the provisions of Appendix A of HG20613. Optional provisions
The selection of flanges, gaskets and fasteners shall be in accordance with the provisions of HG20614. 10
The marking of flanges shall be in accordance with the provisions of HG20592.
Additional Notes: Proposal Unit, Chief Editor Unit and Main Drafters of this Standard Proposal Unit: Equipment Design Technology Center Station of Ministry of Chemical Industry Chemical Process Piping Design Technology Center Station of Ministry of Chemical Industry Chief Editor Unit: Equipment Design Technology Center Station of Ministry of Chemical Industry Main Drafters: Ying Daoyan, Yu Jun
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