This standard specifies the type, size, technical requirements and relevant use regulations of loose-fitting steel pipe flanges with butt-welding rings (European system). This standard applies to loose-fitting steel pipe flanges with nominal pressure PNO. 6 MPa (6 bar)-4. 0 MPa (40 bar). The loose-fitting steel pipe flanges specified in this standard are applicable to the two steel pipe outer diameter series n and s specified in HG 20592. HG 20599-1997 Loose-fitting steel pipe flanges with butt-welding rings (European system) HG20599-1997 Standard download decompression password: www.bzxz.net

Butt-weld ring loose-sleeve steel pipe flange
(European system)
HG 20599---97
1 Subject content and scope of application
This standard specifies the type, size, technical requirements and relevant use regulations of butt-weld ring loose-sleeve steel pipe flange (European system). This standard applies to butt-weld ring loose-sleeve steel pipe flanges with nominal pressure PNo.6MPa (6bar) ~ 4.0MPa (40bar). The butt-weld ring loose-sleeve flanges specified in this standard are applicable to the two steel pipe outer diameter series A and B specified in HG20592, 91
HG20592
HG20603
HG 20604
HG 20605
HG 20613
HG 20614
2. Reference standards
Types and parameters of steel pipe flanges (European system)" "Technical conditions for steel pipe flanges (European system)" "Pressure-temperature grades of steel pipe flanges (European system)" "Dimensions of welded joints and grooves 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 type and applicable scope
3.0.1 The sealing surface type of the flange is raised face (RF). Its size and selection shall comply with the provisions of Chapter 6 and Section 8 of HG20592. 3..2 The applicable pressure and diameter range of the weld ring loose flange shall comply with the provisions of Table 3.0.2. Table 3.0.2 Applicable range
Sealing surface type
Cool surface ERF)
Nominal pressure PN, MPa (har)
DN10~600
4 Flange size
The size of the flange shall be in accordance with the provisions of Figure 4-1 and Table 4-15. Table 4-1 P No.6MPa (6bar) Butt welding ring loose steel pipe flange Table 4-2 PN1.0MPa (10bar) Butt welding ring loose steel pipe flange Table 4-3 PN1.6MPa (16bar) Butt welding ring loose steel pipe flange Table 4-4 PN2.5MPa (25har) Butt welding ring loose steel pipe flange Table 4-5 PN4.0MPa (40bar) Butt welding ring loose steel pipe flange Butt welding ring neck wall thickness S is generally equal to the nominal thickness of the steel pipe, which is determined by the user. The S values ​​listed in Tables 4-1 to 5 of this standard are only used in situations where the user has not made specific requirements. When the user selects a $ value different from that listed in Table 4-.15, it should be indicated in the order and marking. The flange thickness S of the butt welding ring should not be less than the minimum wall thickness of the steel pipe (0.875S), B,
Figure 4-1 Butt welding ring loose sleeve steel pipe flange
(PJ (plate loose sleeve)/SE (butt welding ring)) Steel pipe outer diameter
(Butt welding ring
Neck outer diameter)
Table 4-1
PNO.6MP (6har) Butt welding ring loose sleeve copper pipe flange connection size
Flange bolt hole Bolt screw
Outer diameter center circle
32°100
38:120
45 :130
100:114.3:108
150:168.3:159
426540
450595
Diameter quantity
145139
174165
333:334
Butt welding ring
Height outer diameter
Theoretical weight
Butt welding ring
Steel pipe outer diameter
【Butt welding ring
Table 4—2PN1.0MPa (10bar) butt welding ring loose sleeve steel flange Connection size
Flange screw inspection hole bolt bolt
Neck outer diameter)
Outer diameter center medical
114.3:108
3001323.9
630780
Diameter quantity
Flange inner diameter
365386
321416
622642
Butt welding ring
Commercial outer diameter
Theoretical weight
Butt ring
Feather tube outer diameter
Set 4-3
PN1. 6MPa (16aar) butt welding ring loose sleeve sharp flange connection size
(butt welding ring
flange bolt hole
bolt bolt
neck outer diameter> outer diameter center line
1001114.3 108
125;139.7
150f168. 31159[285
200/219.1;219340
3001323.9325
3501335. 6|371
Diameter number
Inner diameter of flange
415;435
46714901
5191541
e22,642
Butt welding ring
Height outer diameter
Theoretical nest
Butt ring size
8. 23. 9
8. 0 15. 2 1 55. 8
Nominal outer diameter
Table 4-4·PN2. SMPa (25bar) butt welding ring loose sleeve steel pipe flange connection size
(butt welding ring
thread thread bolt
neck outer diameter) outer center
1001114.3
108:235
3771553
diameter base
flange inner diameter
120|114
M33×X2
622642
butt welding ring
height outer diameter
theoretical weight
butt welding ring
.0. 09
2. 6:2. 6- 0. 17
110·503
8. 0 1 8. 50
609 10.010.0
720[11.011,0
33.4 113, 7
Outer diameter of steel pipe
Table 4—SPN4. (MTPz(40bar) Butt welding ring loose sleeve steel pipe flange connection size
(Butt welding ring
Flange screw gun hole bolt screw control
【Neck outer diameter》Outer diameter center
36 1 33. 71
1001114.31168
:71133
158.31159
480685
631899
Reading diameter type
Flange inner diameter
Explosion ring
Height outer diameter
Theoretical weight
Tree explosion ring
11. 8i 1. 8.
46 2. 0.
58 1132wwW.bzxz.Net
11.0111.0
12. 512. 5
73516. 0116. 03
50, E
5 Technical requirements
The technical requirements of flanges shall comply 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 comply with the provisions of HG20604. 7 Welding joints and grooves
The dimensions of the welding joints and grooves of the welding ring and the steel pipe shall comply with the provisions of HG20605, 8 Fastener length
The length of the fasteners (bolts, studs) used 1 shall comply with the provisions of Appendix A of HG20613. 9
Optional provisions
The selection of flanges and gaskets shall comply with the provisions of HG20614, 10 Marking
The marking of flanges shall comply with the provisions of HG20592.
Additional Notes: This standard proposer, editor and main drafter Proposer: Equipment Design Technology Center of the Ministry of Chemical Industry Chemical Process Piping Design Technology Center of the Ministry of Chemical Industry Editor, Equipment Design Technology Center of the Ministry of Chemical Industry Main drafter: Ying Daoyan Yu Jun
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