This standard specifies the product classification, technical requirements, inspection rules, marking and packaging of pipe hangers. This standard applies to the fixing of pipes in ship piping systems. CB/T 3780-1997 Pipe hanger CB/T3780-1997 Standard download decompression password: www.bzxz.net

ICS_47.020.30
Ship Industry Standard of the People's Republic of China
CB/T3780-1997
Pipe hangers
Pipe hangers
Published on October 17, 1997
China State Shipbuilding Corporation
Implemented on June 1, 1998
CB/T3780-1997
This standard is revised from CB209-64 "Pipe hangers" and CB'3211-83 "U-type pipe clamps for marine steel pipes". With the advancement of shipbuilding technology, the installation requirements for ship pipelines are also increasing. The pipe hangers specified in CB209--64 are relatively backward and have no construction drawings, which makes it difficult to implement the standard; the U-type pipe clamps specified in CB'3211-83 are relatively simple and cannot meet the needs of export ships and ocean-going ships. The revised standard simplifies the type specifications of CB209-64 from 8 types and 219 specifications to 3 types and 36 specifications. The type specifications of CB3211-83 are increased from 4 types and 82 specifications to 6 types and 135 specifications. This is conducive to the selection of various ship types.
This standard replaces CB209-64 and CB'3211-83 from the date of entry into force. Appendix A of this standard is a prompt appendix.
This standard is proposed by the National Technical Committee for Standardization of Marine Machinery Pipe System Accessories Sub-Technical Committee. This standard is under the jurisdiction of the Comprehensive Technical and Economic Research Institute of China State Shipbuilding Corporation. The drafting unit of this standard: Dalian Shipbuilding New Plant Ship Research Institute; Jiangnan Shipyard participated. The main drafters of this standard: Qiu Jinquan, Ma Hengen. This standard is provided with unified construction drawings.
1 Scope
Ship Industry Standard of the People's Republic of China
Pipe hangers
Pipe hangers
This standard specifies the product classification, technical requirements, inspection rules, marking and packaging of pipe hangers. This standard applies to the fixing of pipes in ship piping systems. 2 Product classification
The types and basic parameters of pipe hangers are as shown in Table 1. 2.1
Types and basic parameters of pipe hangers
Ordinary type
Special type
Pipe outer diameter D.
10~630
76~630
22~630
24~1048
Scope of use
CB/T3780-1997
Classification number: U55
Replace CB209-64
CB*3211-83
Thin-walled steel pipe or various types of copper Single pipe bracket for thin-walled steel pipe, plastic pipe, low-pressure welded steel pipe Single pipe hanger for thin-walled steel pipe or various types of copper pipes, plastic pipe, low-pressure welded steel pipe Multi-tube side-by-side bracket for thin-walled steel pipe or various types of copper pipes, plastic pipe, low-pressure welded steel pipe Pipe clamp for anti-vibration and axial movement of pipes Pipe clamp that allows axial expansion and contraction of pipes due to large temperature difference of medium Pipe clamp for pipelines in hazardous areas of chemical tankers or ships Pipe clamp that allows axial movement of copper pipes, copper alloy pipes, galvanized pipes or special coated pipes Pipe clamp for small multi-tube side-by-side or single-row copper pipes, copper alloy pipes, galvanized pipes or special coated pipes Pipe clamp for hydraulic and pneumatic pipelines
The structure and basic dimensions of 2.2Qa type pipe hanger are as shown in Figure 1 and Table 2. P
1 bracket; 2--clamp ring; 3 bolt; 4--nut Figure 1 Qa type pipe hanger
Approved by China State Shipbuilding Corporation on October 17, 1997 and implemented on June 1, 1998
Inner radius
CB/T3780—1997
Table 2 Basic dimensions of Qa type pipe hanger
Welded steel pipe
The weight listed does not include the weight of bolts and nuts. 2H size can be extended or shortened according to installation conditions. P
Qb type pipe hanger structure and basic dimensions are as shown in Figure 2 and Table 3. H
1—Bracket; 2—Clamp ring; 3—Bolt; 4—Nut Figure 2
Qb type pipe hanger
M6×18
M8×22
M10×25
M12×35
Inner radius
CB/T3780—1997
Basic dimensions of Qb type pipe hanger
Welded steel pipe
The listed weight does not include the weight of bolts and nuts. P size can be extended or shortened according to the installation situation P
Qc pipe hanger structure and basic dimensions are as shown in Figure 3 and Table 4. 2.4
1- bracket; 2- clamp ring; 3- bolt; 4- nut Figure 3 Qc pipe hanger
M6×18
M8×22
M10×25
M12X35
Inner radius
Outer diameter of pipe Dw
CB/T3780—1997
Basic dimensions of Qc pipe hanger
Number of fixed pipes
Welded steel pipe
Note: The weight listed does not include the weight of bolts and nuts. (root)
2.5Pa pipe hanger structure and basic dimensions are as shown in Figure 4 and Table 5. P
Structural dimensions
1-Bracket; 2-U-shaped stud; 3-Nut
Figure 4Pa type pipe hanger
M6×18
M8×22
U-shaped stud
Outer diameter of pipe D,
Note: The weight listed is the weight of U-shaped stud.
CB/T3780-1997
Table 5Basic dimensions of Pa type pipe hanger
2.6The structure and basic dimensions of Pb type pipe hanger are in accordance with Figure 5 and Table 6. P
U-shaped stud
Outer diameter of pipe D.
Note: The weight listed is the weight of U-shaped stud,
CB/T3780—1997
1-Bracket; 2-U-shaped stud; 3-Nut
Figure 5Pb type pipe hanger
Table 6Basic dimensions of Pb type pipe hanger
Structural dimensions
2.7Ta type pipe The hanger structure and basic dimensions are according to Figure 6 and Table 7. 6
U-shaped stud
CB/T3780-1997
Bracket; 2-Liner; 3-Spacer: 4
U-shaped stud; 5 Nut
Figure 6 Ta type pipe hanger
Basic dimensions of Ta type pipe hanger
Pipe outer diameter D
Note: The listed weight is the weight of the U-shaped stud.
Structural dimensions
CB/T37801997
3The structure and basic dimensions of Tb type pipe hanger are as shown in Figure 7 and Table 8. 2.8bzxZ.net
1-Bracket; 2-Spacer; 3--U-shaped stud; 4-Nut Figure 7 Tb type pipe hanger
U-shaped stud
Pipe outer diameter Dw
Basic dimensions of Tb type pipe hanger
U-shaped stud
Pipe outer diameter Dw
Note: The listed weight is the weight of the U-shaped stud.
CB/T3780-1997
Table 8 (end)
The structure and basic dimensions of the Tc type pipe hanger are in accordance with Figure 8 and Table 9. 622
1-Pressing plate; 2-Upper body; 3-Lower plate; 4-Guide rail; 5-Nut; 6-Bolt; 7-Washer Figure 8 Tc type pipe hanger
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