CB/T 174-1994 Flange connection tee pipe

CB/T 174-1994 Flange connection tee pipe CB/T174-1994 standard download decompression password: www.bzxz.net

Shipbuilding Industry Standard of the People's Republic of China
CB/T174-94
Flange-connected tee
Published on August 22, 1994
Published by China State Shipbuilding Corporation
Implemented on May 1, 1995
Subject Content and Scope of Application
Shipbuilding Industry Standard of the People's Republic of China
Flange-connected tee
CB/T174-94
Classification Number: U55
Replaces CB174-60
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of flange-connected tees (hereinafter referred to as tees) with flange connection dimensions in accordance with GB569 and GB2501. This standard applies to ship piping systems with media such as seawater, fresh water, fuel oil, lubricating oil, air and steam with a temperature not exceeding 300°C (copper tee 250C).
Cited standards
GB569-65
GB2501—89
CB/Z343-84
3 Product categories
Marine flange connection dimensions and sealing surfaces
Marine flange connection dimensions and sealing surfaces (four-digit) Hot-dip galvanizing general process
The types of tees are specified as follows:
Type A - flange connection dimensions are in accordance with GB569 flange connection steel tee Type AS - flange connection dimensions are in accordance with GB2501 flange connection steel tee Type B - flange connection dimensions are in accordance with GB569 flange connection loose sleeve copper tee Type BS - flange connection dimensions are in accordance with GB2501 flange connection loose sleeve copper tee 3.2
The basic parameters of the tee are in accordance with Table 1.
Nominal pressure PN
0. 6, 1.0.1. 6
3.3A type tee structure and basic dimensions refer to Figure 1 and Table 2. China Shipbuilding Industry Corporation approved on August 22, 1994 Nominal diameter DN
32~150
50~200
1995—05-01 implementation
Structural dimensions
CB/T174-94
Figure 1A type, AS type
CB/T174—94
AS type tee structure and basic dimensions refer to Figure 1 and Table 3.3.4
Structural dimensions
3.5B type tee structure rent basic dimensions refer to Figure 2 and Table 4. D,
CB/T174-94
Figure 2B type BS type
Structural dimensions
CB/T174-94
The structure and basic dimensions of BS type tee pipe are in accordance with Figure 2 and Table 5. 3.6
Marking example
Structural dimensions
CB/T174-94
Nominal pressure is 1.6MPa, Flange-connected steel tee pipe with nominal diameter of 50mm, flange connection size and sealing surface according to GB569: tee pipe
A16050
CB/T174-94
Flange-connected steel tee pipe with nominal pressure of 0.6MPa, nominal diameter of 50mm, flange connection size and sealing surface (four-digit) according to GB2501:
Tee pipe
AS6050
CB/T174—94
Flange-connected loose-sleeve steel tee with nominal pressure of 0.6MPa, nominal diameter of 50mm, flange connection dimensions and sealing surface (four-digit) according to GB2501:
Technical requirements
BS6050
CB/T174—94
Tee parts Materials are as per Table 6.
Parts Name
Copper pipe, tee
Ordinary carbon steel
Silicon brass
Seamless steel pipe
Drawn copper pipe
CB/T174-94
Q235-A
HSi80-3
Flange connection dimensions and sealing surfaces are as per GB569 or GB2501. Standard No.
GB700—88
GB5232—85
GB5312—85
GB1527—87
Steel tee pipes should not be galvanized when used in oil media systems, and should be hot-dip galvanized when used in other media systems, with a minimum coating weight of 610g/m*.
The surface of the copper tee pipe should be coated with a protective paint film. Test methods and inspection rules
The tee pipe must be subjected to a hydraulic test, and the test pressure is 1.5 times the nominal pressure, which should be maintained for 5 minutes, and there should be no leakage. The surface of the flange and the pipe should be smooth, and there should be no defects that reduce strength and affect sealing. The end face of the flange should be perpendicular to its axis, and the deviation should not be greater than 30'. 5.4 Hot-dip galvanizing quality inspection shall be in accordance with CB/Z343. 5.5
The tee pipe shall be inspected and accepted by the quality inspection department of the manufacturer in accordance with the requirements of Articles 5.1 to 5.4, and a product quality certificate shall be issued. Marking and packaging
The tee pipe shall have the following markings:
Manufacturer name or logo;
Product name;
Model and standard number;
Production batch number or manufacturing year and month;
Inspection pass seal.
Before the tee pipe leaves the factory, the inlet and outlet ports should be sealed and stored in a dry place. Additional remarks: bzxz.net
This standard is proposed by the Pipe Accessories Sub-Technical Committee of the National Technical Committee for Standardization of Marine Machinery. This standard is under the jurisdiction of the 603 Institute of China State Shipbuilding Corporation. This standard was drafted by Jiangnan Shipyard. The main drafters of this standard are Hu Jiarui and Chen Xinhua. This standard is provided with a unified construction drawing.
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