This standard specifies the type, basic parameters, dimensions, technical requirements and relevant use regulations of the revolving arch cover quick opening stainless steel manhole. This standard is applicable to the nominal pressure PN0.6MPa, the working temperature is greater than -20 ~ 200 ℃, and the temperature rise and pressure drop can be applied to the revolving arch cover quick opening stainless steel manhole with a working temperature of 300 ℃. HG 21597-1999 Revolving arch cover quick opening stainless steel manhole HG21597-1999 Standard download decompression password: www.bzxz.net

Stainless steel manhole with quick opening of revolving arch cover
HG 21597--1999
1 Subject content and scope of application
This standard specifies the type, basic parameters, dimensions, technical requirements and relevant use regulations of the quick opening stainless steel manhole with revolving arch cover. This standard is applicable to the revolving arch cover quick opening stainless steel manhole with nominal pressure PN0.6MPa and working temperature of 20~~200℃. The temperature rise and pressure drop can be applied to the quick opening stainless steel manhole with working temperature of 300℃.
HG 21594
2. Reference standards
"Split pin"
"Pin with hole"
"Classification and technical conditions for stainless steel manholes"6
Type, basic parameters and dimensions
Mark
Gasket 8=3
Hexagonal nut
Switch boltbzxZ.net
Upper ear plate
Lower ear plate
See data sheet
See data sheet
18(22)
10(20)
18(22)
Note: The material of the gasket is allowed to change, but it should be noted in the container assembly drawing. ②The quantity in brackets is for manholes with a nominal diameter of DN500. Maximum non-shock working pressure gauge nominal pressure at working temperature
--20100
Stainless steel
20R lined stainless steel
Asbestos rubber sheet
Stainless steel
Q235-A
Q235-A
Q235-A
Low carbon steel
Q235—A·F
Maximum non-shock working pressure (MPa)
Nominal nominal
Pressure diameter
(MPa)[(nm)dw
Inch (mm)
Joint bolt
Mass (kg)
bRIAH diameter X length
450466 663058054531 32450325220 M27X145 84251.16935005166
450466
680630595 38 34500350230M27×150105059.87110630580545|3632450325220M27X14584252.9595500516 6 68063059538 34500350230 M27X150104961.98111MFM
Note: The height H of the manhole can be changed if there are special requirements, but the size of the changed H should be indicated, and the stainless steel mass and total mass of the manhole should be modified. 47
Technical requirements
Technical requirements shall be in accordance with the provisions of HG21594-1999 "Classification and Technical Conditions of Stainless Steel Manholes and Handholes".
5Swivel arch cover quick-opening stainless steel manhole drawing self-registration name
Swivel arch cover quick-opening stainless steel manhole
Swivel arch cover quick-opening stainless steel manhole
Construction drawing number
RF450-0.6HG 21597--1999
RF500-0.6HG21597-1999--2
Swivel arch cover quick opening stainless steel manhole MFM450-0.6HG21597-—19993Swivel arch cover quick opening stainless steel manhole MFM500-0.6HG21597--1999-Number of sheets
Number of sheets folded 1# drawing
6 mark Example
Nominal pressure PN0.6MPa, nominal diameter DN450, H.-220, raised face sealing surface type rotary arch cover quick opening stainless steel manhole, its specified marking symbol is: manhole RF450--0.6HG21597
H, 250 (non-standard size) of the above example manhole, its specified marking symbol is: hole RF450--0.6H, =250HG21597
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