Standard No.:	HG/T 21520-2014
English Name:	Hubbed Slip-on-welding Flange Manholes with Davit to Vertical Cover
Chinese Name:	垂直吊盖带颈平焊法兰人孔
Chinese Classification:	G91    Chemical machinery and equipment parts
Professional Classification:	HG    Professional Standard - Chemistry
Issued by:	Ministry of Industry and Information Technology
Issued on:	2014-07-09
Implemented on:	2014-11-1
Status:	valid
Superseding:	HG/T 21520-2005 Hubbed Slip-on-welding Flange Manholes with Davit to Vertical Cover
Language:	English
File Format:	PDF
Word Count:	6000 words
Price(USD):	180.00
Delivery:	via email in 1 business day

1 General provisions



1.0.1 This standard is developed with a view to standardizing the design of slip on flange manholes with davit to vertical cover, reducing repetitive design work, ensuring product quality, and improving comprehensive.



1.0.2 This standard is applicable to the design of slip on flange manholes with davit to vertical cover with nominal pressures PN10~PN16 in chemical/petrochemical plants and other similar ones.



1.0.3 The design of the slip on flange manholes with davit to vertical cover shall not only comply with this standard, but also meet the current relevant national standards.



 

2 Structural style and dimension



2.0.1 The structural style of slip on flange manholes with davit to vertical cover shall meet the requirements of Figure 2.0.1.

1 General provisions
2 Structural style and dimension
3 Technical requirements
4 Marking and examples
Normative standards