CB 244-1995 Hose joints and through-tank pipe fittings specification CB244-1995 standard download decompression password: www.bzxz.net

China State Shipbuilding Corporation Department Standard
CB244—95
Specification for hose joints and through-tank fittings
Issued on 1995—12-19
Issued by China State Shipbuilding Corporation
Implementation on 1996—08—01
1 Scope
1.1 Subject Content
China State Shipbuilding Corporation Department Standard
Specification for hose joints and through-tank fittings
CR 244—95
Classification number: U55
Replaces CB244-77
This specification specifies the requirements, quality assurance provisions and delivery preparation for hose joints and through-tank fittings (hereinafter referred to as through-tank fittings). 1.2 Applicable scope
This specification applies to small ships.
1.3 Classification
Through-tank pipe fittings are divided into the following two types
Type A - straight-through-tank pipe fittings
Type B - right-angle through-tank pipe fittings
2 Reference documents
GB 600-91
GB-745-83
CB'/Z 34384
HG 6—477—79
3 Requirements
3.1 Structure and specifications and dimensions
General technical conditions for ship-mounted pipeline valves
Selection principles for metal coatings and chemical treatments General process for hot-dip galvanizing
Military cloth-reinforced hose
3.1.1 Basic parameters of through-tank pipe fittings are shown in Table 1. Table 1
Applicable copper pipe fittings
Straight steel pipe fittings
Right angle steel pipe fittings
Right angle pipe fittings!
Nominal force PN
3.1.2 The dimensions of type A through-tank pipe fittings are as shown in Figure 1 and Table 2. Approved by China State Shipbuilding Corporation on December 19, 1995. Nominal diameter DV
10--80
Application medium
Fresh water, lubricating oil, fuel oil
Fresh water, oil leakage, fuel oil
Implemented on August 1, 1996
Nominal internal extension
Diameter length
Structural length
3012017 0120
323535
13075180125
CB24495
Figure 1A type
1—through-cabin section, 2—web
Steel pin
1405019013045
15090200110
Tube steel pipe
0. 170. 16
3. 1. 3For the dimensions of B-type through-cabin fittings, see Figure 2 and Table 3. CB244—95
Figure 2 Type B
1 Through pipe,
2——·Stomach plate
Public quarantine
Weighing internal disassembly
Knot average (degree
100160
130180bzxZ.net
120155
0, 20
0. 430. 63
0. 54 0. 9
2. 042. 562. 28
3.2 Marking example
CB 244 —95
Nominal pressure of 0.6MPa, nominal diameter of 2CrtIn, and length of 130mm: through-copper tank pipe state: through-tank pipe fittings A60201139CB24495
Nominal pressure of 0.6MPa. Nominal diameter of 5Gmm. Right-angle copper tank pipe fittings with a structural length of 17°mml: through-tank pipe fittings B6G500—170CB244—953.3 Materials
3.3.1 The materials of the main parts of the tank pipe fittings are shown in Table 4. Installation
Zero stop name
Torque pipe
3.4 ​​Performance
Seamless steel pipe
Welded steel pipe
Ordinary carbon valve plate
3.4.1 The central cloth hose is made of HG6—447 Selection. Material
10 or 20
10 or 20
T2 or TP2
Q 235—A
GB 8163-87
YB242--63
GB 1527-87
GB 70I88
3.4.2 According to the orderer's requirements, steel through-tank sound parts need to be galvanized. The hot-dip galvanizing shall be (:R:/7.343. The coating thickness shall not be less than 460g/m, and the electroplating thickness shall not be less than 25um.
3.4. 3 Hydraulic test pressure of through-tank pipe fittings is PS-1. 5PV, there should be no seepage when the pressure is maintained for 5 minutes. 3.4.4 Through-tank pipe fittings are allowed to be connected with a metal wire with a diameter of 1.2~2mm instead of rolled convex. 3.5 Appearance
The outer surface of through-tank pipe fittings is smooth and flat, and defects such as slag inclusions, pores, weld nodules, burrs, etc. are not allowed. Quality Assurance Regulations
4.1 Inspection Responsibility
The cabin pipe fittings shall be inspected and accepted by the quality inspection department of the manufacturer. The cabin joints submitted for inspection must comply with the requirements of Chapter 3 and Chapter 5 of this specification.
4.2 Test Method
Through-tank pipe fittings shall be tested for strength without pressure in accordance with the requirements of GB600. The inspection results shall comply with the provisions of 3.4.3. 5 Delivery preparation
5.1 Packing
Before packing, both ends of the through-tank pipe fittings shall be covered with sheaths. 5.2 Packing
The through-tank pipe fittings shall be packed in boxes, and the boxes shall have packing lists. The following information shall be noted on the packing lists: i. Product name, standard number:
b. Nominal pressure, nominal diameter;
t. Number of pieces per box:
l. Product specification
5.3 Storage
The through-tank pipe fittings that have been inspected and qualified shall be placed indoors, and outdoor storage is not allowed. 5.4 Marking
CB 244-95
The marking requirements for through-tank pipe fittings shall include standard number, inspection seal and manufacturer's mark. Additional notes:
This specification is proposed by the Comprehensive Technical and Economic Research Institute of China State Shipbuilding Corporation. This standard is under the jurisdiction of Wuhan Shipyard of China State Shipbuilding Corporation. This standard was drafted by Fanchao Shipyard with the participation of the Sixth Institute. The main drafters of the small standard are Xia Yunqing and Wu Shaozeng. This standard is provided with unified construction drawings.
Project code: 942805.
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