This standard specifies the product classification, technical requirements, inspection rules, marking, packaging, transportation and storage of double-sided flange welded seat plates for marine use with flange connection dimensions in accordance with GB569 and GB2501. This standard applies to marine piping systems with the media being fresh water, seawater, lubricating oil, fuel oil, air, steam and distilled water with a temperature not exceeding 300°C. Double-sided seat plates made of carbon steel are not suitable for marine piping systems with the medium being distilled water. GB/T 11694-1994 Double-sided flange welded seat plates for marine use GB/T11694-1994 Standard download decompression password: www.bzxz.net

TDC 629.12.061 : 621.646
National Standard of the People's Republic of China
GB/T1169494
Double face welded bed plate for flanges in marine
Double face welded bed plate for flanges in marine1994-06-30Promulgated
National Technical Supervision Bureau
1995-04-01Implementation
W.National Standard of the People's Republic of China
Double face welded bed plute for ttanges in marlne1Subject content and scope of application
GB/T 11694-94
Replaces CB11694-89
This standard specifies the product classification, technical requirements, inspection rules, marking, packaging, transportation and purchase and storage of marine flange welded double-sided seat plates (hereinafter referred to as double-sided seat plates) with flange connection dimensions according to GH569 and GB2501. This standard is applicable to the pipeline system with dry media such as fresh water, seawater, lubricating oil, fuel oil, air and steam and distilled water with a temperature not exceeding 300℃
The double-sided seat plates made of carbon steel are not applicable to the ship piping system with the medium being distilled water. 2 Reference standards
Ordinary thread tolerances and fits (diameter 1 ~ 355mm) GB 197—81
Marine flange connection size and sealing surface
GB56965
GB250189 Marine flange connection size and sealing surface (four-digit) CB859·77P30 welded steel flange
3 Product classification
3.1 The type of double-sided seat plate is specified as follows:
Flange connection size is based on the double-sided seat plate AS.BS type of GJ56. Flange connection size is based on the double-sided seat plate A- of GB2501.
-Flange connection size is based on the CB859 and P30 welded steel flange Double-sided seat plate used in conjunction with steel flange 3.2 Basic parameters of the double-sided seat plate are as shown in Table 1. Table 1
Approved by the State Bureau of Technical Supervision on June 30, 1994 Nominal pressure N
Nominal diameter DN
2G~-350
2℃~-150
20~-54
4:~2nt
Implementation on 1995.0401
W. Class
Note: 1) The values ​​in brackets are working pressure
3.3 Structure and basic dimensions of the double seat plate.
GB/T 11694-94
Continued Table 1
Nominal PN
3. 3. 1 Structure and basic dimensions of type A and type B double-sided seat plates according to [Figure 1, Figure 2 and Table 2. 1A
Figure 2E type
Nominal box W
20--550
20-~50
W. Life
GB/T 11694.-94
Double-sided seat plate
123104
Bolt hole
(pcs)
138 2. (
W. Life
GB/T 11694—94
Continued Table 2
Double-sided seat
3.3.2 The structural dimensions of AS type and upper S type double-sided seat plate shall be in accordance with Figure 1, Figure 2 and Table 3. Table 3
Double-sided seat plate
.nt:
Hole
M12: 12
A type IR type
W. Nominal
3.4 ​​Marking example
GB/T 11694—94
Continued Table 3
Double-sided seat platebzxZ.net
26 225
3201 280
335312
Bolt hole
M20! 20
AS type: HS type
445 15- 9 17. C
Nominal E force is C.6MPa, nominal diameter is 200mm, carbon steel double-sided seat plate according to GT569 flange connection size and sealing surface; double-sided seat plate A6200GB/T11694-91
Working force is 3. 0 MP:, nominal diameter is 50 mm. According to CB 859 P30 welding steel flange connection size 922 steel plate effective surface seat plate:
Double-sided seat plate A30050TCB/T 1:694-94 nominal pressure is 2.6MPa, nominal diameter is 40 mm, press: B2501 flange connection size and seal (four-position) stainless steel double-sided seat plate:
double and seat plate 1825040N (B/T11694-94W.bzsoso: com4 technical requirements
CB/T 11694-94
4.1 double-sided plate method "connection size and case according to GB69, GB2501; F30 double-sided seat plate and C13859 steel method matching use.
4.2 effect and seat plate materials according to Table 1.
carbon vegetable knot for rice
solution acid-resistant hall
disintegration structure old discussion
standard number
SIUNt:IT
GI 423781
Q251-A00172
4.3 The screws on both sides of the double seat plate should be engraved, and the original size is allowed to deviate by 0.5mm. The thread tolerance is in accordance with GB117 6H grade. 5 Inspection rules
5.1 The double seat plate shall be inspected and accepted by the manufacturing and technical inspection departments, and shall be provided with a certificate of conformity. 5-2 The contents of the acceptance inspection include material certificates, dimensions and appearance. 6 Marking, packaging, transportation and storage
6.1 The side of the seat plate shall be marked with the following marks: model and standard number:
b. Inspection and acceptance stamp;
d. Inspection and acceptance stamp;
e ... 6.3 When storing for a long time, the product surface should be coated with anti-inducing oil and covered with oil paper. Additional remarks:
This standard is in the charge of China Shipbuilding Industry Corporation. This standard is under the jurisdiction of the 603 Institute of China Shipbuilding Industry Corporation. This standard is also drafted by Bohai Shipyard. The 603 Institute participated in the drafting of this standard. The main drafters are Xu Qizhen, Wu Shaozeng, W.bzsoso:com
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