JB/T 9080.2-1999 JB/T 9080.2-1999 PN0.6MPa90° welded aluminum elbow JB/T9080.2-1999 Standard download decompression password: www.bzxz.net

ICS 71.100.20
Machinery Industry Standard of the People's Republic of China
JB/T9080,2-1999
PN0.6MPa90° Welded aluminium elbow pipe
PNo.6 MPa 90° Welded aluminium elbow pipe1999-07-12Issued
National Bureau of Machinery Industry
2000-01-01Implemented
JB/T9080.2-1999
This standard is a revision of 7F17028—90PN0.6MPa90—Welded elbow pipe. During the revision, the original standard was revised and the main technical contents were changed. This standard shall replace ZB6028-90 from the date of implementation. This standard is proposed and managed by the Technical Committee for Standardization of Gas Separation and Liquefaction Equipment. This standard was drafted by: Kangzhou Bottle Manufacturing Co., Ltd. This standard was drafted by: Lun Hua, Tang Gengzhan. This standard was first issued in March 1980. bzxZ.net
Machinery Industry Standard of the People's Republic of China
PNU.6MPa0° Welded Aluminum Bend
PNo.6MPu9o'Welded aluminum elbow elb-owpipeJB/T9080.2—1999
Replacement J6028—90
This standard specifies the type and size, technical requirements, marking, packaging, transportation and application of 90° elbow pipes for 90” aluminum pipes with a nominal pressure (PN) of 0.6MPa for indoor gas separation. Reference standards
The following standards contain provisions that constitute the text of this standard through their use in this standard. When this standard is published, the edition rates shown are valid. All standards are subject to revision, and parties using this standard should discuss the possibility of using the latest version of the following standards.JR/T1580—19 75 Aluminum Coal Connectors Technical Conditions 3 Types and Sizes
3.1 The types and sizes of elbows shall be determined according to Figure 1 and Table 1. 3.2 Marking Example
Nominal diameter DV=500mm, nominal pressure IN=0.6MP, 9g° lead elbow made of LF2 is marked as: DN500PN0.6-LF2JB9080.21999
Guohao Machinery Industry 1999-0-12 Approved 20001-05 Implementation
Nominal diameter
【225】
Design: The format in brackets is optional, according to the technical requirements
The outer circumference tolerance of the elbow is specified in Table 2. 4. 1
Nominal diameter DN
Outer circumference tolerance
JB9080.2—1999
>250-500
4.2 The difference between the maximum inner diameter and the minimum inner diameter of the pipe end is shown in Figure 2, which shall not be less than 1% of its nominal diameter. 2
.54.50
167,0)
>80--][KK]
JB/T9080.2—1999
4.3 The material of the elbow is ".F2, 1F21, L4, and must comply with the provisions of relevant national standards or industry standards, and have a material certificate. No financial certification period, must be restored to meet In accordance with the relevant standards, it can be used. 4.4 The outer surface of the pipe should not have obvious wrinkles and scratches. The inner and outer surfaces must be free of grease and organic matter. There should be no tumors and welding melts.
4.5 All welds must be X-ray inspected, and the quality of welds should meet the requirements of the old T1580. 4.6 The wall thickness of the bend should not be reduced by more than 10%. 8.5 Marking, packaging, transportation and storage
5. Print or engrave the mark (for wall thickness less than 5mm) on the exposed part of the pipe, the content is as follows: nominal diameter:
nominal pressure;
- material brand.
5.2 The bent pipes are packed in a firm box, and there can be no relative movement between the bent pipes in the box. 5.3 The unpacked pipes shall not be melted during the connection process, and shall not be damaged. 5.4 The pipes shall be stored in a clean, dry and grease-free warehouse.
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