CBM 1007-1981 16kgf/cm2 cast iron and cast steel flange

CBM 1007-1981 16kgf/cm2 cast iron and cast steel flanges CBM1007-1981 standard download decompression password: www.bzxz.net

Foreign Trade Standard of the Sixth Machinery Industry Ministry of the People's Republic of China
16kgf/cm Cast Iron and Cast Steel Flange
This standard flange connection dimensions are the same as J1S
B2213-1976
Applicable media range: steam, air, water and oil, etc. 2 Flange dimensions refer to the following figure and Table 1.
The rest V3
Note: The double-dotted line in the figure is a full-plane flange. Issued by the Sixth Ministry of Machinery Industry
Proposed by the Pipe Accessories Group
CBM1007-81
Implemented on July 1, 1981
The Seventh Othorp
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(90）
10d100
125125
15d150
20d200
25q250
30q30 0
35q335
40d380
45q430
50q480
CBM1007-81
Sealing surface
Neck diameter
Ball is cast iron
Ductile iron
Note: Try not to use the nominal diameter in brackets: 20
Total 3 pages Page 2
Center circle
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Countersunk seat
Thread)
CBM1007-81
3. Flange materials are as per Table 2.
Parts name
Cast steel flange
Ductile iron flange
Cast iron flange
Ductile iron
Gray cast iron
Bolts and nuts are as per Table 3:
Below 220℃
220℃~<350C
High quality carbon
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Total 3 pages Page 3
QT42-10
HT20-40
Standard Standard number
GB699-65
20crMo
350c425℃
Alloy structural steel
yB6-71
Note: High-quality carbon steel strip above No. 35 is quenched and tempered 5.
High-quality carbon
Standard number
CB772-70
GB1348-78
GB976-67
Flange allowable temperature and working pressure are temporarily in accordance with CBM102281 flange sealing surface and gasket.
iAccording to CBM1002-81:
Flange size allowable deviation is in accordance with CBM1003-81: Free standard network (www.freebz.net) can be downloaded without registration Standard number
GB699-65
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