This standard specifies the type, dimensions, technical requirements and relevant use regulations of the flat-welded steel pipe flange with neck (American system). This standard applies to the flat-welded steel pipe flange with neck with nominal pressure PN2.0 MPa (Class 150) ^ 26.0 MPa (C,,s]500). HG 20616-1997 Flat-welded steel pipe flange with neck (American system) HG20616-1997 Standard download decompression password: www.bzxz.net

Slip-on steel pipe flange with neck
(American system)
HG 20616-- 97
Subject content and scope of application
This standard specifies the type, size, technical requirements and relevant use regulations of slip-on steel pipe flange with neck (American system). This standard is applicable to slip-on steel pipe flange with neck with nominal pressure PN2.0MPa (Class150)--26.OMPa (ClassJ.500).
HG20615
HG20624
HG 20625bzxZ.net
HG20626
HG20634
HG20635
Referenced standards
《Types and parameters of steel pipe flanges (American system)》《Technical conditions for steel pipe flanges (American system)》《Pressure-temperature grades of steel pipe flanges (American system)》 & Dimensions of welded joints and grooves of steel pipe flanges (Continental system)》《Fasteners for steel pipe flanges (American system)》《Steel Regulations for the selection of pipe flanges, gaskets, and fasteners (American version) 3 Flange sealing surface types and applicable scope
3.0.1 The flange sealing surface types include raised face (RF), full plane (FF), convex face (MFM), and groove face (TG). The size and use shall be in accordance with the provisions of Chapter 6 and Chapter 8 of HG20615. When PN≤5.0MPa (Class300), the boss height f of the raised face flange is included in the flange thickness C; when PN211.0MPa (Class600), the boss height f of the raised face flange is not included in the flange thickness C: the table height f of the concave and convex surface and the groove surface flange is not included in the flange thickness C. 3.0.2 The applicable pressure and diameter ranges of various sealing surface types shall be in accordance with the provisions of Table 3.0.2. Table 3.0.2 Scope of application
Nominal pressure PV.MPa (Class)
Sealing type or
Raised face (RF )
Concave (MFM)
Male groove surface (TG)
Full flat rain (FF)
(Class150)
IN15～609
(Class30)
(Cl2z%s600)
DN15-600
DN15~-600
DN1$--600
(Class 400)
(Class 1500)
DN15~ 63
DN15~65
DN13-65
Flange size
The flange size shall be in accordance with the provisions of Figure 4:1 and Tables 4-1~5 Table 4-1 PN2.0MPa(Class150) Slip-on steel pipe flange with neck Table 4-2 PN5.0MPa(Class300) Slip-on steel pipe flange with neck Table 4-3 PN11.0MPa(Class600) Slip-on steel pipe flange with neck Table 4-4 PN15.UMPa(Class900) Slip-on steel pipe flange with neck PN26.nMPa(Class1500) Slip-on steel pipe flange with neck Table 45
Full plane
PN≤5.0MPa
PN2 11.0MPa
Figure 4-1 Slip-on steel pipe flange with neck (SO) Raised face
Nominal diameter
Nominal diameter
H4-1
PN2.0MPa(CIAss150) Slip-on steel pipe flange with neck Connection size
Outer diameter, standard "
Screw inspection hole screw age screw grid
Center circle diameter
Lan neck
PN5. UMIPi(Class 300) Slip-on steel pipe flange connection dimensions with neck
Note blue screw hole bolt hole screw
Outer diameter center selection
Flange measurement
Nominal diameter
Nominal diameter
Table 4-3
PN11.MPa(CILSS600) Slip-on steel pipe flange connection dimensions with neck
Bolt hole bolt filling bolt hole
Center circle diameter
Table 4-4
Flange neck||tt| |M48×3
PN15.MPa（Class900）Neck-welded steel pipe flange connection size
Screw hole bolt hole bolt hole
Center circle diameter
M42×3
M48×3
M52×3
Remove neck
5, 20
Nominal diameter
5PN26.0MPa（ClaS51500）Neck-welded steel pipe flange Table 4 5
Connection size
Bolt hole bolt hole bolt hole
Center circle diameter
Technical requirements
The technical requirements of flange shall be in accordance with the provisions of HG20624. 6 Maximum non-impact working pressure
The nominal pressure of the flange and the maximum non-impact working pressure at different temperatures shall comply with the provisions of HG20625. 7 Welding joints and grooves
The dimensions of the welding joints and grooves of flanges and steel pipes shall comply with the provisions of HG20626. Fastener length
The length of the fasteners (bolts, studs) used1 shall comply with the provisions of Appendix A of HG20634. Matching regulations
The matching of gaskets and fasteners shall comply with the provisions of HG20635. 10 Marking
The marking information of the relevant parts shall comply with the provisions of HG2065.
Additional notes: The proposing unit, chief editor unit and main drafter of this standard Producing 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
Editing unit: Equipment Design Technology Center Station of the Ministry of Chemical Industry Main drafter: Ying Daoyan Yu Jun
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