This standard specifies the type, size and technical requirements of spiral wound gaskets for steel pipe flanges (European system). This standard applies to spiral wound gaskets for steel pipe flanges with a nominal pressure PN of 1.6M Pa (16 bar) ^ -16.OM Pa (1 60 bar) as specified in HG 20592. HG 20610-1997 Spiral wound gaskets for steel pipe flanges (European system) HG20610-1997 Standard download decompression password: www.bzxz.net

Spiral wound gaskets for steel pipe flanges (European system) HG 20610--97 Subject content and scope of application This standard specifies the type, size and technical requirements of spiral wound gaskets for steel pipe flanges (European system). This standard applies to spiral wound gaskets for steel pipe flanges with a nominal pressure PN of 1.6MPa (16bar) to 16.0MPa (160bar) as specified in Hr20592.
GB 4239
SH3407
HG20592
ZBI22019
ZBG 33005
Cited standards
《Cold-rolled steel strips of stainless steel and heat-resistant steel》
《Spiral wound gaskets for pipe flanges》
《Types and parameters of steel flanges (European standard)》《Technical specifications for graphite tape for spiral wound gaskets》《Polyvinyl fluoride raw materials for thread sealing》 3 Gasket use conditions
The maximum working temperature of the gasket shall be as specified in Table 3-1. The maximum working temperature of the gasket
Table 3-1
Metallic materials
CriaNig
(t'r17Ni12Mu?
onCri7Nil4Mu2
GR4239
Non-metallic tape materials
Asbestos paper
Non-coconut paper
Flexible graphite tape
Polytetrafluoroethylene
Note: Other metal tape materials can also be used. The design should be based on the use of oxidizing media.
ZBJ 22019
ZIG33005
Maximum working temperature
Gasket type and size
4.0.1 Gasket type shall be in accordance with Figure 40.! and the provisions of Table 4.0.1. Table 4.0.1 Gasket type
Basic principle
With inner ring type
With outer ring type
Inner and outer ring type
Through pressure test surface type
Slot surface
Note: It is recommended to use the inner and outer ring type. When used for PN26.3MUa, the inner and outer ring type polytetrafluoroethylene system must use AB or D type. 4.0.2 Gasket size||t t||(1) The dimensions of type A and type B gaskets shall be as specified in Table 4..2-1, and the dimensions of type (2) and type 1) gaskets shall be as specified in Table 1.0.2-2. (3) The gasket dimensions listed in Table 4.0.2-1-2 are applicable to steel pipe flanges of the two steel pipe outer diameter series AB listed in HG20592.
(4) The inner diameter D of the gasket in Table 4.0.2-1-2 is applicable to general situations. It can also be modified as needed, and the modified inner diameter of the inner ring should be indicated in the order. 210
Type A (basic type)
Type B (with inner ring type)
Type C (with outer ring type)
D Type (with inner and outer rings)
Gasket type
Table 4. D. 2-IA type and B type whole piece size Wound gasket
.Dirax
Wound gasket
Type C and D type piece size
Mai 4.0.2-2
Nominal pressure PN,MPa(bar)
(15---40)
6. 3--16. 0
(63-iGO)
Outer diameter of wound gasket
Outer ring diameter D
10. 0.16.0
(100):(1G0)
Inner and outer damage of spiral wound gasket
Technical requirements
Dimensional deviation of seal piece shall be in accordance with the provisions of Table 5.0.1 Table 5..1 Limit deviation of seal piece size
Inner diameter of inner ring D,
Outer diameter of outer ring 14
Thickness of outer ring T:
Thickness of gasket (excluding non-metallic
Shao part)
DV100~-600
3. 0~3. 3
Inner diameter D
Outer diameter D:
Other technical requirements of gaskets shall comply with the provisions of SH3407, 5.0.2
DN10~20G
DN250--900
DN10~-20G
DN250600
DN>600
二0. 75
±0, 75
Marking and packaging
6.0-1 Gaskets shall be packaged according to type, specification and material. Product quality inspection certificate shall be attached upon delivery. Except for the basic gaskets which shall be marked with labels, other types of gaskets shall be marked with the contents specified in 6.0.2 on the outer ring (or inner ring) with steel stamps. 6.0.2 Marking contents
(1) Standard number (HG20610);
(2) Type code (see Table 4.0.1):
(3) Nominal diameter (mm):
(4) Nominal pressure (MPa),
(5) Material code (see Table 6.0.2).
Table 64.2 Gasket type and material code
Outer ring material
Low carbon steel
oCrteNis
6.0.3 Marking example
Metal strip materialwww.bzxz.net
oCr18Vig
OCr17Nit2Mn2
00Cr17Ni14Ma2
Non-metal strip material
Special upper grade
Flexible graphite tape
Polytetrachloroethylene
Special non-asbestos paper
Inner bad material
Low magnetic steel
oCr1aNi9
0Cr 17Ni12Mo2
0OCr17Ni11M02
C-wound heat-retaining gasket with nominal diameter of 10on1u and nominal pressure of 4.MPa (40bar), the outer ring material is low carbon steel, the metal belt material is oCri8Ni9, and the non-metallic belt material is flexible stone jade. Its mark is: HG20510
Wound gasket
C100—4.0
Additional instructions: The unit proposing, editing and main drafting of this standard Proposing unit: Equipment Design Technology Center Station of Ministry of Chemical Industry Chemical Process Piping Design Technology Center Station of Ministry of Chemical Industry Chief editing unit: Equipment Design Technology Center Station of Ministry of Chemical Industry Main drafting person: Ying Daoyan Yu Jun
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