This standard specifies the product classification, technical requirements, inspection rules, marking, packaging, transportation and storage of marine flange welded single-sided seat plates with flange connection dimensions in accordance with GB569 and GB2501. This standard is applicable 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. Single-sided seat plates made of carbon steel are not applicable to marine piping systems with the medium being distilled water. GB/T 11693-1994 Marine flange welded single-sided seat plates GB/T11693-1994 Standard download decompression password: www.bzxz.net

UC: 629. 12. 061 + 621. 646
National Standard of the People's Republic of China
GB/T 11693—94
One-side welded bed plate for flanges in marine
Issued on 1994-06-30
State Administration of Technical Supervision
Implemented on 1995-04-01
W.National Standard of the People's Republic of China
One-side welded bed plate for flanges in marine
Onc-sidc welded hed plale far flanges in narine1 Subject content and scope of application
CB/T 11693—94
Replaces GR1169389
This standard specifies the product classification, technical requirements, inspection rules, marking, packaging, transportation and storage of marine flange single-sided seat plates (hereinafter referred to as single-sided seat plates) with flange connection dimensions in accordance with GB569.GR2501. This standard is applicable to marine piping systems with the media being fresh water, seawater, fuel oil, air, steam and distilled water with a temperature not exceeding 300°C.
Single-sided seat plates made of carbon steel are not applicable to marine piping systems with the media being distilled water. Reference standards
GB19781 Ordinary thread tolerance (diameter 1 ~ 355mm) GB3569-65 Marine flange connection size and sealing surface GB250189 Marine flange connection size and sealing surface (four-position) CB859:77P30 Coal connection steel tailings
3 Product classification
3.1: Single-sided seat plate type regulations
R type - flange connection size according to GB569 single-sided seat plate: S type -: - flange connection size according to CB2501 single-sided seat plate. 3.2 Basic parameters of single-sided seat plate according to Table 1.
Note: 1! The value in brackets is the working pressure. Table 1 approved by the State Bureau of Technical Supervision on 1994-06-30
Nominal PN
Nominal diameter IIN
20--500
20--250
20~-150
20~100
175~-250
:0~～200
1995-04 -01 Implementation
W.bzsoso:com3.3 Structural basic dimensions of single-sided pressure plate
GB/F11693—94
3.3.1 The structure and basic dimensions of R-type single-sided pressure plate shall be in accordance with Figure 1 and Table 2. Figure 1
Single-sided seat plate
(pcs)
Bolt hole
Nominal
GB/T 11693 - 94
Continued Table 2
Single-sided seat plate
W. Male
GB/T 11693-94
Continued Table 2bZxz.net
Single-sided pressure plate
33.2 The internal structural dimensions of S-type single-sided seat plate shall be in accordance with Figure 1 and Table 3. Nominal
Grass surface, densely embedded
Screw inspection hole
Nominal
3.4 ​​Marking traceability
GB/T11693
Continued Table 3
Single-sided seat plate
n(pieces}
Screw inspection hole
Standard search network
GB/T 11693-94
Nominal pressure is 0.6MPa. Nominal diameter is 200mm, according to GB569 flange connection size and sealing surface carbon steel single-sided seat plate: single-sided seat plate 620GB/T1169394
Nominal pressure is (.6.1.0.1.6 and 2.5MPa. Nominal diameter is 50mm, according to GB569 flange connection size and sealing surface stainless steel single-sided seat plate.
Single-sided seat plate 25050NGB/T11693--s4
Nominal pressure is 1.0 and 1.6MPa, nominal diameter is 150mm, according to GB2501 method Flange connection size and sealing (four-position) stainless steel single plate.
Single-sided plate S16150N (GB/T11693---94 working force is 3.(MPa. Nominal diameter is 200mm according to CB859P30 welding steel flange connection size 922 steel plate single-sided seat plate.
Single-sided seat plate 30200TGB/111693-94
4 Technical requirements
4.1 The standard connection size and sealing surface of the single-sided seat plate are in accordance with GB569, GB2501; P30 single-sided seat plate is used in conjunction with CB859 steel flange.
4.2 Single-sided plate Materials are as per Table 4.
Carbon ore structure
Stainless steel acid-resistant steel
Long-body structure door steel
Q235-A
OCriSNilTi
4.3 The thickness of the single-sided seat plate is allowed to deviate by 0.5mm. The thread tolerance is in accordance with the 6H grade of GB197. 5 Inspection rules
5.1 The single-sided seat plate shall be inspected and accepted by the technical inspection department of the manufacturer (production) and a certificate of conformity shall be issued. 5.2 The inspection contents include material quality certificate, size and appearance. 6 Marking, packaging, transportation and storage
6.1 The side of the side seat plate shall be marked with the following marks:, model and Standard number:
b. Inspection and qualified stamp;
c. Expiration date or batch.
6.2 During the product transportation process, the sealing surface should be packaged to prevent damage. 6-3 Anti-rust oil should be applied to the surface of the product during long-term storage, and oil paper should be used to stick it. 6
Standard number
C3700--88
GE1237B1
Q251-400172
W. Additional instructions:
This standard was proposed by China State Shipbuilding Corporation. GB/T11693-94
This standard was drafted by the 603 Institute of China State Shipbuilding Corporation. This standard was drafted by Bohai Shipbuilding Corporation, and the 603 Institute participated. The main drafters of this standard are Hu Zhengwen and Wu Shaozeng. W.
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