HG 21514-1995 Carbon steel, low alloy steel manhole and handhole types and technical conditions HG21514-1995 standard download decompression password: www.bzxz.net

Industry Standard of the People's Republic of China
HG21514~21535--95
Carbon Steel, Low Alloy Steel Manhole and Handhole Released
1995 - 12 28
1996 -- 04 - 01
Ministry of Chemical Industry of the People's Republic of China
Document of the Ministry of Chemical Industry
Chemical Construction Development (1995) No. 1003
Notice on the issuance of 35 industry standards including "Manholes and Handholes for Carbon Steel and Low Alloy Steel"
To all departments (bureaus and companies) of chemical industry in various provinces, autonomous regions, municipalities directly under the Central Government and cities with independent planning status, and all relevant units: 35 standards including "Manholes and Handholes for Carbon Steel and Low Alloy Steel" (including construction drawings) organized by the Equipment Design Technology Center of the Ministry of Chemical Industry and edited by China Tianchen Chemical Engineering Company (see the attachment for detailed standard names and numbers) have been reviewed and approved as industry standards and will be implemented from April 1, 1996. The 35 standards are managed by the Equipment Design Technology Center of the Ministry and published and issued by the Engineering Construction Standard Editing Center of the Ministry.
Appendix: Catalogue of 35 standards including "Manholes and handholes for carbon steel and low alloy steel" Ministry of Chemical Industry
December 28, 1995
Appendix Catalogue of 35 standards including "Manholes and handholes for carbon steel and low alloy steel" Standard name
Types and technical conditions of manholes and handholes for carbon steel and low alloy steel Normal pressure manhole
Swing cover plate flat welding flange manhole
Swing cover with neck Flat welding flange manhole
Swing cover with neck butt welding flange manhole
Vertical cover plate flat welding flange manhole
Vertical lifting cover with neck flat welding flange manhole
Vertical lifting cover with neck butt welding flange manhole
Horizontal lifting cover plate flat welding flange manhole
Horizontal lifting cover with neck flat welding flange manhole
Horizontal lifting cover with neck butt welding flange manhole
Normal pressure rotary handle quick opening manhole|| tt||Quick opening manhole for elliptical revolving cover
Quick opening manhole for revolving arch
Normal pressure handhole
Handhole for plate type flat welding flange
Handhole for flat welding flange with neck
Handhole for butt welding flange with neck
Handhole for butt welding flange with neck for revolving cover
Normal pressure quick opening handhole
Quick opening handhole for rotary handle
Quick opening handhole for revolving cover
Stirring transmission system System combination, selection and technical requirements Stirring drive device - flange
Stirring drive device - installation bottom cover
Stirring drive device - single-pivot frame
Stirring drive device - double-pivot frame
Stirring drive device - transmission shaft
Stirring drive device - short coupling
Stirring drive device one-piece elastic coupling Stirring drive device coupling
Mechanical seal for stirring transmission device
Mechanical seal for stirring transmission device circulation protection system Steel and glass sintering sight glass
Steel and glass sintering liquid level gauge
Editor-in-chief
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Guanchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianchen Chemical Engineering Company
China Tianqi Chemical Engineering Company|| tt||China Tianchen Chemical Engineering Corporation
China Tianchen Chemical Engineering Corporation
China Tianchen Chemical Engineering Corporation
China Tianchen Chemical Engineering Corporation
China Tianchen Chemical Engineering Corporation
China Tianchen Chemical Engineering Corporation
China Tianchen Chemical Engineering Corporation
Equipment Center Station
Equipment Center Station
Equipment Center Station
Nanhua Company Design Institute
Equipment Center Station
Equipment Center Station
Shanghai Pharmaceutical Institute
Shanghai Pharmaceutical Institute
Shanghai Pharmaceutical Institute
Equipment Center Station
Hefei General Machinery Research Institute
Equipment Center Station
Equipment Center Station
Standard No.
HG 21514-95
HG 21515—95
HG21516—95
HG 21517—95
HG 21518-95
HG21519-95
HG 21521-95||tt| |HG 21522-95
HG 21523-95
HG 21524—95
HG 21525-95
HG 21526—95
HG 21527—95
HG2152895
HG 21529-95
HG21530-95
HG21531-95
HG 21532—95
HG21533-95
HG 21534-95
HG 21535—95
HG21563-95
HG 21564—95
HG 21565-95
HG 21566-95
HG 21567 -- 95
HG 21568-95
HG 21569.1-95
HG 21569.2--95
HG21570--95
HG 21571--95
HG 21572--95
HG21605-95
HG 21606--95
Industry Standard of the People's Republic of China
Manholes and handholes made of carbon steel and low alloy steel HG 21514~21535 ---95
Editor: China Tianchen Chemical Engineering Corporation Approval department: Ministry of Chemical Industry
Implementation date: April 1, 1996 Engineering Design Standard Editing Center of the Ministry of Chemical Industry
HG21514-95 Types and technical conditions of manholes and handholes made of carbon steel and low alloy steel HG 21515--95
Normal pressure manhole
HG 21516--95
Swing cover plate flat welding flange manhole
Swing cover with neck flat welding flange manhole
HG 21517-95
HG 21518-- 95
HG 21519-95
HG 21520--95
HG 2152195
Face-turning cover with neck butt-welding flange manhole
Vertical cover plate type flat welding flange manhole·
Vertical cover with neck flat welding flange manhole·
Vertical cover with neck butt-welding flange manhole
HG21522-95Horizontal cover plate type flat welding flange manhole 5Horizontal cover with neck flat welding flange manhole
HG 21523-95
Horizontal cover with neck butt welding flange manhole
HG21524--951
HG 21525 --- 95
HG 21526-95
HG 21527-95
HG 21528—95
HG21529-95
HG 21530-95
HG21531-95
HG 21532-95
HG 21533-95
HG21534-95
HG 21535 -95
Preparation Instructions
Self-recording of Construction Drawings
Normal Pressure Rotary Handle Quick Open Manhole
Eaves Circular Rotary Cover Quick Open Manhole
Revolving Arch Cover Quick Open Manhole
Normal Pressure Handhole
Handhole for Plate Slip-on Flange
Handhole for Neck Slip-on Flange
Handhole for Neck-welded Flange
Handhole for Rotary Cover with Neck-welded Flange
Normal Pressure Quick Open Handhole
Rotary Handle Quick Open Hand
Revolving Cover Quick Open Handhole
：(43)
（87)
Types and Technical Conditions of Carbon Steel and Low Alloy Steel Manholes and Handholes
HG 21514--95
1 Subject content and scope of application
This standard specifies the types, technical conditions and specimens of standard manholes and handholes of HG21515-95~HG21535-95. The standard is applicable to manholes and handholes made of carbon steel and low alloy steel used as entrances, exits or inspection ports on containers in the chemical and petrochemical industries. The nominal pressure is 0.25MPa6.3MPa at normal pressure and the working temperature is 40℃～500℃. This standard can also be used for containers similar to those in the chemical and petrochemical industries. The scope of application, type, basic parameters and dimensions of various manholes and handholes (including the materials of various parts in the manholes and handholes, the maximum non-impact working pressure value at different working temperatures, etc.) and their technical requirements are respectively specified in standards HG21515-95~HG21535-95.
GB 1. 1--93
GB150-89bZxz.net
JB288081
GB 3274--88
GB6654--86
GB 8163-87
GB 994888||tt| |GB 700-88
GB 699-88
JB4726-94
GB 3985--83
GB 539-83
GB 5574-85
GB 196--81
GB 5796. 3--86
GB 197--81
GB 5796.4--86
GB 3103. 1 --82
GB 5779. 1--86
GB 5779.286
HGJ 69--91
GB 1804-79| |tt||JB/T4709--92
GB 985-88
HGJ 68-91
GB 3323-87
JB1152-81
Cited standards
《Guidelines for Standardization Work
Basic Provisions for Standard Preparation》
《Steel Pressure Vessels》
《Technical Conditions for Steel Welded Atmospheric Pressure Vessels》
《Hot-rolled Thick Plates and Strips of Carbon Structural Steel and Low-alloy Structural Steel》
《Technical Conditions for Thick Plates of Low-alloy Steel for Pressure Vessels》
《Seamless Steel Pipes for Conveying Fluids》
《Seamless Steel Pipes for Petroleum Cracking》
《Carbon Structural Steel》
《Technical Conditions for High-quality Carbon Structural Steel》
《Carbon Steel and Low-alloy Steel Forgings for Pressure Vessels》Note)《Asbestos Rubber Sheet》
《Oil-resistant Asbestos Rubber Sheet》
《Industrial Vulcanized Rubber Sheet》
《Ordinary Threaded Base Steel》 "Basic dimensions of trapezoidal thread"
"Tolerances and fits of ordinary threads"
"Tolerances of trapezoidal thread"
"Tolerances of fasteners - bolts, screws and nuts" "Surface defects of fasteners - bolts, screws and studs - general requirements" "Surface defects of fasteners - general requirements for nuts" "Asbestos rubber gaskets for steel pipe flanges" "Tolerances and fits - limit deviations of dimensions without tolerances" "Welding code for steel pressurized containers"
"Basic forms and dimensions of weld grooves for gas welding, manual arc welding and gas shielded welding" "Welded joints and groove dimensions for steel pipe flanges" "Radiography and quality grading of steel fusion welded butt joints" "Ultrasonic flaw detection of butt welds of boilers and steel pressure vessels" (Note): The original JB755-85 standard was adopted, but because the standard has been abolished, the JB4726-94 standard is now used, and the following are the same - editor. -
3 Types
Types of manholes and handholes made of carbon steel and low alloy steel, as well as the name and code of the sealing surface, the nominal diameter and the nominal pressure parameters shall be as specified in Table 3-1.
Changyu manhole
Mu Swivel cover flat welding flange manhole
Swivel cover with neck flat welding flange manhole
Name and code of sealing surface
Note: The nominal diameters in brackets in the table should not be used as much as possible, the same below. 500
（500）
Table 3--1
Nominal pressure PN
1.62.54.06.3
0.250.61.0
Standard number
HG21515
HG 21516--95
Manhole with rotating cover and neck butt welding flange
Vertical hanging cover plate flat welding flange manhole
Seal name and code
Ring connection surface
（450)
Continued Table 3-1
Nominal pressure PN
0.250.6|1.0|1.62.54.0|6.3
Standard number
HG 21518 - 95
HG 21519 -- 95
Vertical cover with flat welding flange manhole
Vertical cover with butt welding flange
Two-person manhole
Name and code of sealing surface
Ring joint name
(450)
Continued table 3-—1
Nominal pressure PN
0.25 0.6/1.01.612.54.0/6.3
Standard push number
21520-95
HG21521
Horizontal energy network
Horizontal product cover with color flat welding flange manhole
Horizontal lifting cover with color butt welding flange manhole
Ring connection surface
Nominal pressure PN
Continued table 3-1
Standard number
0.250.61.01.62.54.0
HG 21522-95
HG21523--95
21524-95
Normal pressure rotary handle quick opening manhole
.Oval rotary cover quick opening manhole
Sealing surface name and code
Nominal size
450×35g
Nominal pressure PN
0.250.61.0
Continued Table 3—
Standard opening
21525-95
HG 21526- 95
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