This standard specifies the product classification, technical requirements, test methods, inspection rules, marking and packaging of marine fire-fighting connectors. This standard is applicable to fire-fighting systems with fresh water and sea water as the medium. GB/T 2031-1994 Marine Fire-fighting Connectors GB/T2031-1994 Standard download decompression password: www.bzxz.net

TIDC:629.12.C1
National Standard of the People's Republic of ChinaWww.bzxZ.net
GB/T 2031- 94
Marine fire-fighting coupeigs1994-07-19 Issued
1995-04-01 Implementation
State Technical Inspection and Supervision Bureau
National Standard of the People's Republic of China
Marine fire-fighting coupeigs1 Subject content and scope of application
GE/T 2031:94
GB 203_—8U
This standard specifies the product specifications, technical requirements, test methods, inspection rules and marked packaging of fire-fighting joints for tires (hereinafter referred to as joints).
This standard is applicable to fire-fighting systems with fresh water and seawater as the medium. 2 Reference standards
G 60091 General technical specifications for shipbuilding pipe fittings B3C32—8U Standard requirements for light-duty pipe fittings
B383—53 Copper casting installation specifications
3 Product classification
3.1 Types and basic parameters of joints. 1 Regulations for joints. Table 1
Joint type
Spiral fire-fighting joint
Tylon belt joint
Fire-fighting joint seal
National Ball General Manager's Industry
Special fire-fighting joint
Note: 1 Nominal diameter DN/DN, 50/GSmm3-2 Connection structure and basic size
3.2.1.The basic dimensions of the staggered joint of type A floor head shall be determined according to Figure 1 and Table 2. National technical supervision and control 19940719 batch of wine
public funds adjustment V
40.51.6.5
1995-04-01 implementation
public you pass
GB/T2131-94
normal size and connection size
3.2.2E to the joint of the average and basic size design Figure 2 and Table 3 period F
1- 1-4
Nominal diameter
GB/T2031-94
Required dimensions and connection sizes
3.2.3 Uniform joint structure and non-standard dimensions shown in Figure 3 are required to use the nominal diameter
3.2.4> According to the average and basic dimensions of the joints in Figure 1 and Table 5, 1.
Nominal diameter
GB/T2031-94
Required dimensions and connection sizes
3.2.5E type connection structure basic dimensions: that is. 1c0
3.3 Marking example
CR2231.-94
Nominal pressure.MPa, male diameter is 50mm, connector A1605rGB/T2031--94
Nominal pressure: 1.6MPa, male diameter is 50mm hose connector, connector B16050GB/T203194
Nominal ring pressure: .SMPa, nominal diameter is DNC/N65 fire protection connector, connector E15/65GB/T2:131-94
4 Technical requirements
4.1 Characteristics of connector parts shall be based on Table 6.
What is the name of the main body?
HNR435
4.2 When the joints are connected, they should be tight and can not be separated by pressing. 4.3 The inner and outer surfaces of the joints should be smooth, without pores, bulges, stains or other low-quality or obvious defects. 5 Test method
Hubei China
CX—
GH70RS—E6
For the joints, close them when they are connected, pressurize to 2.MPa, and keep 1215.1 The joints should be subjected to a water pressure test. During the test, there should be no observable leakage and cracks on the interface. There should be no deformation. 5.2 The joints should be subjected to a sealing water pressure test. The test method can be 5.1. If the pressure is 1.76MPa and 50g is maintained, there should be no lifting phenomenon. This test is allowed to be carried out at the same time.
When the following situations occur, retrospective type inspection should be carried out: a
Trial type identification of new products or old products: After formal production, if there are major changes in structure, materials, and processes, which may affect product performance, this inspection should be carried out again at regular intervals: d, when the quality supervision of the whole machine requires type inspection. 6 Inspection rules
6. The connection should be accepted by the factory inspection department after production, and a certificate of qualification should be issued. 6.2 The inspection of the joint is divided into clinical inspection and formal inspection. The requirements of the type inspection and factory inspection should be in accordance with the specifications. 6.3
Chemical composition inspection of the parts
Tension test
Water pressure test
Sealing test
Factory inspection
Type inspection| |tt||Comply with PH regulations
Comply with 4. Record regulations
5.1 Standard regulations
5.2 Default
54 Inspection method and judgment rules, the number of random inspections for each batch of type inspection is 5, but not less than groups. If one group does not meet the requirements, GB, T2031-94
Batch inspection, plus another group does not meet the requirements, the batch of products is not qualified, 7 Labeling and packaging
7.1 Labeling of connectors 7.2 The joints should be wrapped with plastic or anti-agent paper, and the fire protection should be carried out according to the interface. It is allowed to be packed in pairs. The package should be accompanied by a product instruction manual and a packing list.
. 3 The product packaging should have the following signs:
Product name, model, specification!
Number of seats:
Manufacturer! Name;
Factory date:
Packaging body diameter! Length × width × height ():
Base, 5th generation
Additional instructions:
This international standard is proposed by Shandong Shipbuilding Industry Corporation. This standard is approved by China Shipbuilding Industry Corporation. This standard is not approved by China Shipbuilding Industry Corporation. This standard is not approved by China Shipbuilding Industry Corporation. This standard requires a single person to apply for it.
This standard refers to the international standard single head of N3m311~86207-89 fire extinguishing device, C type, B plastic fire extinguishing head. This standard is provided with continuous construction work.
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