This standard specifies the type, size, technical requirements and relevant use regulations of butt-welding steel pipe flanges with neck (American system). This standard is applicable to butt-welding steel pipe flanges with tops of nominal pressure PN 2.0M Pa (Class 1 50)--42.0 MP, (Class 2 500). HG 20617-1997 Butt-welding steel pipe flanges with neck (American system) HG20617-1997 Standard download decompression password: www.bzxz.net

Neck-welding steel pipe flange
(American system)
HG 20617—97
1 Subject content and scope of application
This standard specifies the type, size, technical requirements and relevant use regulations of neck-welding steel pipe flanges (American training system). This standard applies to neck-welding steel pipe flanges with nominal pressure PN2.0MPa (Clas150)~~42.0MPaClass2500).
HG20615
HG20624
HG 20625
HG20626
HG20634
HG20635
Cited standards
《Types and capacities of steel pipe flanges (American system) Technical specifications for steel pipe flanges (American system)》《Pressure and leakage levels of steel hip flanges (American system)》《Dimensions of welded joints and grooves of steel pipe flanges (American system)》《Fasteners for steel pipe flanges (American system)》《Steel pipe flanges, gaskets: fastener selection regulations (American system)\3 Flange sealing surface types
3.0.1 The sealing surface types of flanges include raised face (RF), concave T-convex face (MFM), grooved face (TG), full flat face (FF), and ring joint face (KJ). Its size and selection shall comply with the provisions of Chapter 6 and Chapter 8 of HG20615. When PN≤5.0MPa (Cleass300), the height of the raised face flange is included in the flange thickness C. When PN11.0MPa (Clas600), the height of the raised face flange is included in the flange thickness C. The boss height of the concave and convex surface and the flat surface flange is not included in the flange thickness (. The boss height F of the ring joint surface flange is not included in the flange thickness C. 3.0.2 The applicable pressure and diameter range of various sealing surface type flanges shall be in accordance with the provisions of Table 3.0.2. Table 3.0.2 Applicable range
Pressure PN, MPa (Class)
Sealing surface type
Agricultural surface (RF)
Raised surface (MFM)
Flat surface (TG)
Full plane (FF)
Ring joint surface (RJ)
(Clasu 150)
DNI5--600
IN25～600
(Clas5 300)
(Class 6co)
DN15~600
(Class930)
DN15 ~- 500
DN15600
DN15600
(Class1500)/(Class2500)
ON15-~300
DN15～300
DN15300
LN15-300
Flange size
Flange size is as shown in Figure 4-1 and Table 4-1~6 Table 4-1IN2.0MPa (Class 150) Neck butt welding steel pipe flange Table 4-2PV5.0MPa (Class 300) Neck butt welding steel pipe flange Table 4-3PN11.0MPa (Clags 600) Neck butt welding steel pipe flange Table 44PN15.oM1Pa (Class 900) Neck butt welding steel pipe flange Table 4:5PN26.MPa (Class 1509) Neck x welding steel pipe flange Table 46PN42.0MPa (Class 2500) Neck butt welding steel pipe flange Flange inner diameter B is determined by the steel pipe wall thickness (see Appendix A). Users should indicate the steel pipe wall thickness grade used in ordering and marking.
Full plane
PR, ≤ 5.0MPa
PN1.0MPa
Figure 41 Neck-welded steel pipe flange (WN)
Note: The neck slope of the butt-welded flange should not be greater than 45. It should have a straight edge section with an inclination of no more than 7, and the length of the straight section should not be less than mm. Face
Ring joint face (RJ)
Figure 4-1 (continued)
Nominal diameter
4-1PN2.0MPa (IassI50) Neck-welded steel pipe outer diameter of steel pipe|| tt||(Outer diameter of flange welding end)
Connection size
Flange bolt hole Center bolt hole Bolt hole
Center diameter
Note: Unspecified flange inner diameter B shall be determined according to ordering requirements or Appendix A. Quantity
Flange neck
Flange theory
Theoretical weightbzxZ.net
Table 42PN5. The flange inner diameter B is equivalent to the steel pipe wall thickness of Sch40.323
Distance
Table 42PN5. 0MPa (Clay 300) Neck-welded steel pipe flange Steel pipe outer diameter (flange outer diameter) Connection size Bolt hole Center bolt hole Control hole Center hole Method "Neck" Method "Theoretical weight The flange inner diameter B listed in the table is equivalent to the steel pipe wall thickness Sch40. Note: The flange inner diameter L specified in the specification shall be determined according to the ordering requirements or Appendix A. 324
Nominal diameter
Table 4-3PNL1.AMPa (ClasS600) Neck-welded steel pipe flange Steel pipe outer diameter
(Neck weld
outer diameter)
Connection size
Bolt hole Bolt hole Bolt hole
Center diameter
Jiangsu: Unspecified flange inner diameter Shan According to order requirements or except for the number of records
Flange neck
Flange theoretical weight
Nominal diameter
Table 4-1 4PN15.(UMPa(CIaSS900>Neck-welded steel pipe flange Steel pipe outer diameter
(Normal\welded
end outer diameter)
Connection size
Screw hole Middle screw hole Bolt hole
Center country diameter
Note: Unspecified inner diameter B shall be determined according to the order requirements or Appendix A, 326
Flange color
Flange material
Nominal diameter
PN26.0MPa(CIaSS1500)Neck-welded steel pipe flange Table 4-5
Outer diameter of steel pipe
(Outer diameter of flange welding
end)
Connection size
Bolt I-Channel bolt hole Bolt hole
Center diameter
.593.5
Note: Unspecified flange inner diameter B shall be determined according to ordering requirements or Appendix A. Thread
M56x3133.5
M61×$116.5
M90X3203.5
Flange neck, flange
Flange principle
Weight
Nominal diameter
Table 46PN42.0MPa(CIa2500)Neck-welded steel pipe flangeOuter diameter of steel pipe
(Outer diameter of the welded end)
Connection size
Center diameter of the hole
Lightweight hole screw hole
Note: Unspecified inner diameter shall be subject to order requirements or attached maximum A smash 328
M70X3 184.3
Flange collar
Flange principle
Weight
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