This standard specifies the T1 type, dimensions, technical requirements and relevant use regulations of the batch steel pipe method (American system). This standard applies to the integral steel pipe flanges with nominal pressures of PN 2.0 MIN (Class 150).-42.0 MPe (Class 250 ("). HG 20618-1997 Integral Steel Pipe Flange (American System) HG20618-1997 Standard download decompression password: www.bzxz.net

Integral steel pipe flange
(American system)
HG 20618-97
Subject content and scope of application
This standard specifies the type, size, technical requirements and relevant use regulations of integral steel pipe flange (American system). This standard is applicable to nominal pressure PN2.0MPa (Class 150) ~ -42.0MPa (ClAss 2500) body steel pipe method 331
HG2061S
HG20624
HG20625
HG20634
HG20635
Reference standards
"Types and parameters of steel pipe flanges (American system)" "Technical conditions for steel pipe flanges (American system)" "Pressure and temperature grades of steel pipe flanges (American system)" "Fasteners for steel pipe flanges (American system)" "Selection regulations for steel pipe flanges, gaskets and fasteners (American system)" 3 Flange sealing surface types
3.0.1 The sealing surface types of flanges include raised face (RF), concave and convex face (MFM), grooved face (TG), full flat face (FF) and ring joint face (RJ). Their sizes and selection are based on HG 20615 Chapter 6, Chapter 8. When PN≤5.0MPa (Class 300), the raised flange height f is included in the flange thickness C. When PN11.0MPa (Class 8 600), the raised flange height fz is not included in the flange thickness C. The height f of the boss of the concave and convex surface and the groove surface flange is not included in the flange thickness ℃. The height E of the boss of the ring joint surface flange is not included in the flange thickness C. 3.0.2 The pressure and diameter ranges suitable for flanges of various sealing surface types shall be in accordance with the provisions of Table 3.0.2. 3.0.2 Scope of application
Nominal pressure PN, MPa (Class)
Sealing surface type
Face (RF)
Concave and convex surface (MFM)
Grooved surface (G)
Full plane (FF)
Remote joint surface (RJ)
(Class 150)
EN15--600
:[3N25～600
(Class 300)
(Class 600)bZxz.net
DN15~-600
(Class 900)
DN15~～600
JIN15--60 core
DN15~600
(class 1500)
(Class 2500)
DN15～300
DN15~-300
DN15-300
DN15～300
Flange cover size
Flange size is shown in Figure 4-1 and Table 4-1~~6 Table 4-1 PN2.0MPa (Class150) Integral steel pipe flange Table 4-2 PN5.0MPa (Clags300) Integral steel pipe flange Table 4-3 PN11.0MPa (Class600) Integral steel pipe flange Table 4-4 PN15.0MPa (Class900) Integral steel pipe flange Table 4-5 PN26.0MPa (Class1500) Integral steel pipe flange Table 46 PN42.0MPa (Clas2500) Integral steel pipe method Bi 334
Full plane
PN45.0MPa
PN>11.0 MPa
Figure 4--1 Integral steel pipe flange (IF)
Ring joint (RJ)
Figure 4-1 (continued)
Nominal diameter
Table 4-1PN2.0MPa (Cla5s150) Integral steel flange connection dimensions
Center circle diameter of bolt hole
Bolt hole
Bolt hole
13(10)
14.5(11.5)
16613)
17.5(14.5)
22.5(17.5)
24(19, 53
Note: The size in brackets is the minimum thickness allowed for the integral flange, which is applicable to the flanges at both ends of the valve. Flange neck
Minimum wall thickness
Nominal diameter
Table 4--2PV5.0MPa (CIass300) integral steel pipe flange connection dimensions
Bolt hole Bolt hole
TM-120
Method "neck"
Minimum wall thickness of collar
Nominal diameter
Table 4-3PN1I.0MPa(CIA89600)Integral steel pipe connection dimensions
Center circle diameter
Screw hole Light hole
M42×3
Part 7
Minimum wall thickness of neck
Nominal diameter
Table 4-4PN15. MPa(ClBSs 90D)Integral steel pipe flange connection dimensions
Bolt hole
Center circle diameter
Bolt hole!
Screw inspection hole,
[M38×3
M42×3
Flange
Minimum wall thickness of flange neck
Nominal diameter
Nominal diameter
PN26.0MPa(CIass1500)Integral steel pipe flange Mai 45
Connection size
Center diameter of bolt hole
Table 4- 6
Bolt hole
Bolt hole
M48×3
M52×3
M56×3
jM90x3
PN42.0MP (CIAss2500) integral steel pipe flange connection size
bolt hole
center circle diameter
bolt holebolt hole
M45×3|| tt||M52×3
Flange
Neck
Small wall
Flange collar: Neck
Small wall thickness
5Technical requirements
Technical requirements of flanges shall comply with the provisions of HG20624. 6Maximum non-impact working pressure
The nominal pressure of flanges and the maximum non-impact working pressure at different temperatures shall comply with the provisions of HG20625. 7Fastener length
The length of the fasteners (bolts, studs) used shall comply with the provisions of Appendix A of HG20634. Matching regulations
The matching of flanges, gaskets and fasteners shall comply with the provisions of IIG20635. Marking
The marking of flanges shall comply with the provisions of HG20615.
Additional Notes: This standard proposes the unit, editor and main drafter Proposing unit: Chemical Process Piping Design Technology Center Station of the Ministry of Chemical Industry Equipment Design Technology Center Station of the Ministry of Chemical Industry
Editor: Equipment Design Technology Center Station of the Ministry of Chemical Industry Main drafters: Ying Daoyan Yu Jun
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