HG 21533-1995 Normal pressure quick opening hand hole. Attached picture

HG 21533-1995 Normal pressure quick opening hand hole. Attached picture HG21533-1995 standard download decompression password: www.bzxz.net

Normal pressure quick opening hand hole
2153395
Subject content and scope of application
This standard specifies the type, size, technical requirements and relevant use regulations of carbon steel normal pressure quick opening hand hole. This standard is applicable to normal pressure quick opening hand hole with no impact working pressure less than 0.07MPa, working temperature lower limit 0℃, upper limit 60～200℃.
Note: The local limit working temperature is determined by the material type of the selected rubber sealing gasket. 171
GB880-86
GB 91—86
HG21514—95
《Pin with hole》
《Flat washer - Grade A》
《Split pin》
Cited standard
《Types and technical conditions for manholes and handholes made of carbon steel and low alloy steel》Types and dimensions
For the types and dimensions of handholes, please refer to the following figure and the provisions of Table 3-1 to Table 3-210
Standard number
GB 880-86
GB 97.185
GB 880-86
GB 9186
Pin 14×45
Gasket 8=4
Gasket 16www.bzxz.net
Swivel bolt M16X130
Pin 16×85
Pin 4×24
Table 3-1
20 (steel pipe)
Q235-A·F
Rubber sheet (smooth surface)
Q235-A·F
Q235- A·F
Q235-A
Q235-A
Q235-—A·F
Q235—AF
Low carbon steel
Table 3-2
Total mass
Note: The height H of the hand hole is determined based on the diameter of the container being not less than twice the nominal diameter of the hand hole: If there are special requirements, changes are allowed, but the changed H size must be indicated and the total mass of the hand hole must be corrected. 174
Technical requirements
: The technical requirements for the hand hole shall be in accordance with the provisions of Chapter 4. "Technical Conditions" in HG.21514. 175
Marking example
For the normal pressure quick-opening hand hole with nominal diameter DN250, H1120 and 2709 acid-resistant and alkali-resistant rubber sheet gasket, the specified marking symbol is:
Hand hole (R·A—2709) 250HG21533—95H1-140 (non-standard size)The specified marking symbol for the above hand hole is: Hand hole (R·A—2709) 250H1=140HG21533-95176
Additional instructions
The proposing unit, chief editor
and main drafters of this standard
Equipment Design Technology Center Station, Ministry of Chemical Industry
Proposing unit, 1
Chief editor: China Tianchen Chemical Engineering Company Shen Pengfei
Main drafters: Li Wenren
Zhao Chenghe
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