HG/T 2132-1991 Glass-lined 45° elbow HG/T2132-1991 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Glass 45° Elbow
Subject Content and Applicable Scope
This standard specifies the types, basic parameters, dimensions and technical requirements of glass 45" elbows. HG/T 2132--91
This standard is applicable to the nominal pressure (PN) equal to or less than 1.0MPa, medium temperature: A type elbow is -20C to 200C, B type and C type elbow is -10C to 200C. Glass 45 elbow 2 Reference Standards
GB1804 Tolerances and Limit Deviations of Dimensions Without Tolerance Notes GB 5780 Hexagon Head Bolts Grade C
GB 5782 Hexagon Head Bolts Grades A and B
GB6170 I Hexagon Nuts Grades A and B
Gray Cast Iron
CB 9439
Seamless steel pipe
ZBG94004 Technical conditions for glass equipment
HG/T2105 Glass equipment slip-on flange
3 Types, basic parameters and dimensions
3.1 Steel wall glass 45* elbow (type A) connected by slip-on flange is in accordance with Figure 1 and Table 1,
Figure 1 type A
+PN and DN in this standard represent nominal pressure and nominal diameter respectively. Approved by the Ministry of Chemical Industry of the People's Republic of China on August 19, 1991, 12
. Implemented on January 1, 1992
57 × 3. 5
73 × 4
103 × 4
133 × 4
159 x 4. 5
219 ×6
273×8
HG /T 213291
Properties: S in the middle and the decay, refers to the glass front wall consideration, kg
PN-0.6MPaPN=1.0 MPa |PN-0. 6MPa| PN-1.0 MPa90
3.2 Cast iron glass 45° plum head (type B) connected by slip-on flange is in accordance with Figure 2 and Table 2,
Figure B type
PN/MPa
86 × 8. 5
106 ×9
132×9.35
158×10
2[4×1f
262 ×12
Note: The middle and the middle refer to the glass process, R
measurement, kz
HG/T2132-91
3.3 Flange-connected cast iron glass 45° elbow (type C) shall be in accordance with Figure 3 and Table 3
Figure 3 Type C
PN/MPa
56 × 7. 5
86 × 8. 5
106×9
214×11
262× 12
Note: S in the figure and table refers to the thickness of the front part. 3.4 Marking example
A type glass 45° elbow
PN is 0.6MPaDN is 50mm
Marking: 45° elbow PN0.6DN50-AHG/T2132~-914 Technical requirements
4.1 Select materials, manufacture, test and accept according to ZBG94004 and this standard. 4.2 The steel pipe in the A type transformer shall be manufactured and accepted according to the requirements of YB 231. 4.3 Manufacturing tolerance and allowable deviation
4.3.1 For B-type and C-type elbows, the materials shall comply with the relevant provisions of GB9439.14bzxz.net
4 × 13.5
8 × 17.5
8× 17.5
12 × 17.5
Reference weight, kg
HG/T2132--91
4.3.2 The allowable deviation of the center circle diameter of the bolt hole on the flange of C-type elbow and the chord length of the two adjacent bolt holes is ±0.6mra, and the allowable deviation of the chord length of any two bolt holes is ±「mm.4.3.3 The tolerance grade of the unmarked dimension of the machined surface shall comply with the IT14 grade specified in GB1804, and the tolerance grade of the unmarked dimension of the non-machined surface shall comply with the IT16 grade.
4.3.4 The allowable deviation of the span length According to the provisions of Table 4. Table 4
55~100
125~200
4.4 The slip-on flanges for type A and type B elbows shall be selected according to HG/T2105. 4.5 Bolts for flange connection: PN less than or equal to 1.0MPa shall be in accordance with the provisions of GB5782; PN less than or equal to 0.6MPa shall be in accordance with the provisions of GB5780; nuts shall be in accordance with the provisions of GB6170; gaskets shall be selected according to relevant standards; 4.6 Water pressure test pressure and maximum working strength at different temperatures shall be in accordance with Table 5 Selection table
5 Packaging, transportation and storage
Test pressure
5.1 The product should be accompanied by a packing list, product certificate and product instructions, 5.2 No collision during transportation and inspection,
5.3 The exposed glass surface should be sealed with soft gaskets and blind plates 5.4 The product should be stored indoors, and it is not allowed to be stored or stacked outdoors. Addition:
This standard is proposed by China National Chemical Equipment Corporation and is under the jurisdiction of the National Technical Committee for Standardization of Glass Equipment. This standard is issued by the National The National Medical Management Institute Shanghai Pharmaceutical Design Institute was responsible for the drafting. The main drafters of this standard are Li Yijun, Hua Qiuyuan, Bao Aiyuan, MPa
The maximum working pressure P at the following temperatures
This standard A-type elbow refers to the German national standard DIN2873-1982 "Nominal pressure 10 bar and 16 bar steel porcelain-plated flanged pipes and fittings".
From the date of implementation of this standard, the former Ministry of Chemical Industry of the People's Republic of China Standard HG5-255-79 "Wedding Glass 45° Elbow" will be invalid.
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