This standard applies to oxygen hose and gas hose joints for gas welding and gas cutting. This standard refers to the international standard ISO 3253-1975 (E) "Hose joints for welding, cutting and related process equipment". GB 5107-1985 Hose joints for welding and cutting GB5107-1985 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Hose connection for equipmentfor welding and cutting
This standard applies to oxygen hose and gas hose joints for gas welding and gas cutting. UDC 621.791. 085
GB 5107--85
This standard refers to the international standard ISO3253-1975 (E) "Hose joints for welding, cutting and related process equipment". Structure and size
1.1 The hose joint for welding torch and cutting torch consists of a threaded joint, a nut and a hose joint, and its structure is shown in Figure 1. Threaded joint
1.2 The threaded joint shall comply with the provisions of Figure 2 and Table 1. Butterfly
Marking example: Hose aperture 8mm, threaded joint with M16×1.5 thread: Threaded joint
GB 5107-85
Published by National Bureau of Standards on April 23, 1985
Soft joint
Implementation on March 1, 1986
Hose aperture
GB 5107-85
M12 × 1.25bzxz.net
The nut should comply with the requirements of Figures 3, 4 and Table 2. 1.3
A Oxygen nut
Gas nut
Marking example: Oxygen nut with hose diameter 8mm and thread M16×1.5 Oxygen nut M16×1.5
GB5107—85
Hose diameter 8mm and thread M16×1.5 Gas nut: Gas nut M16×1.5 (left) GB5107--85 Table 2
Hose diameter
M12×1.25
10.5*g-270
12.5*9-270
9 +0. 220
11 *9.270
13 * 270
Hose joints should comply with the requirements of Figure 5, Table 3, Figure 6, Table 4 and Table 5. 1.4
GB5107--85
1.4.1A-type hose connector is a common hose connector, which is used for oxygen and gas and can be directly connected to the hose. (12)
Marking example: A-type hose connector with hose hole diameter of 8mm and D of 5.5: Hose connector
Hose hole diameter
GB5107-
9 -8: 58
10.5 -8:158
12.5-8:158
B-type hose connector is a hose connector for quick connector, which is used for oxygen and gas separately, but can also be directly connected to the hose. 12
Marking example: B-type oxygen hose connector with hose diameter 8mm and D of 5.2: Oxygen hose connector B-type 5.2GB5107—85537
Hose diameter
7~8: 58
8 -8: 468
10 -0: 558
GB5107—85
9 -8: 58
10.5 =8: 58
12.5-8:158
Oxygen hose connector
Marking example: Hose diameter 8mm, D is 6.2 type B gas hose connector: Gas hose connector type B @6.2
GB5107--85
Gas hose connector
Hose diameter
7.5 -8: 158
9 - 8: 58
11 :8: 58
Sizes not specified are determined by the manufacturer.
2 Technical requirements
11 -8: 8
13-8:458
2.1 The connecting thread shall comply with the relevant provisions of GB192-81 "Basic tooth profile of common thread", GB196-81 "Basic dimensions of common thread" and GB197-81 "Tolerance and fit of common thread". Right-handed thread is used for oxygen and non-flammable gas, and left-handed thread is used for flammable gas.
2.2 All parts shall be made of corrosion-resistant materials, but threaded joints and hose joints for gas shall not be made of alloys with a copper content of more than 70%.
Additional remarks:
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard was drafted by the Harbin Welding Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are Wen Yansheng, Jin Wenkui, Huang Delin and Liu Caizhang. 538
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