HG/T 2436-1993 Glass tube and fittings pressure test method HG/T2436-1993 standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2436-93
Pressure Test Method for Glass Tubes and Fittings
Published on June 14, 1993
Implementation on January 1, 1994
Published by the Ministry of Chemical Industry of the People's Republic of China Chemical Industry Standard of the People's Republic of China
Pressure Test Method for Glass Tubes and Fittings
Subject Content and Scope of Application
HG/T2436--93
This standard specifies the instruments, equipment, specimens, test procedures and result processing methods for the pressure test of glass tubes and fittings. This standard applies to the pressure resistance test of glass tubes and fittings. 2 Reference standards
QB961 Glass instrument internal stress test method Polarization optical measurement method HG/T2435 Glass tubes and pipe fittings
3 Equipment, instruments, test oxygen
3.1 Pump: electric or manual pressure pump with pressure ≥1MPa. 3.2 Pressure gauge: range 01MPa, accuracy not less than 1.0 level, dial diameter not less than 100mm, 3.3 Torque wrench: minimum division 0.5N·m, 3.4 Test device as shown in Figure 1,www.bzxz.net
3.5 Before the test, make a safety check on the pressure system. During the test, a 5mm thick organic glass cover should be used to separate the tester from the sample.
1-Water supply main 2-Pump or hand pump
3 Regulating valve 4-Pressure gauge 5-Pressure hose 6-Blue plate 7-Test sample Figure 1 Schematic diagram of test device
4 Test specimen
Approved by the Ministry of Chemical Industry of the People's Republic of China on June 14, 1993 and implemented on January 1, 1994
4.1 The test specimen shall meet all the requirements of HG/T2435
HG/T2436-93
"Glass Tubes and Fittings". In particular, the test specimens whose wall thickness and internal stress do not meet the standards shall not be used for internal pressure test. 4.2 After the test specimens have passed the size, appearance and stress tests, they shall be cleaned with tap water. 4.3 The number of samples in each group shall be in accordance with the provisions of Article 7.2.3 of HG/T2435 "Glass Tubes and Fittings". 5 Test steps
5.1 Install the qualified sample on the test device, use the torque wrench to evenly tighten the bolts, and the torque value of each bolt is shown in Table 1. 5.2 The sample should be installed horizontally and have appropriate support to reduce the existence of additional stress 5.3 Inject room temperature tap water into the sample until all the gas in the sample is discharged, and then close the water inlet valve and exhaust valve. 5.4 Test pressure: The test pressure of the glass tube is 2 times the design pressure; the test pressure of glass fittings and valves is 1.5 times the design pressure. See Table 1.
Glass tube, pipe torque on each bolt
Parts nominal diameter
DN(mm)
(Asbestos rubber gasket)
2.70—4.10
4.10—4.70
4.10-5.40
Torque on each bolt
(Hard polytetrafluoroethylene gasket)
2.70—4.10
4.10—4. 70
4.10—5.40
6.80--9.50
9.50—13.6
Glass tubes and fittingsGlass tubesTest pressure of glass fittingsGlass valvesGlass doorsDesign pressure
Test pressure
Test pressure
6.90-8.10
5.5Press to the test pressure at a speed not exceeding 20Kpa/s and maintain the pressure for not less than 5min. 6 Test results
6.1 Each sample is qualified if the test pressure does not drop and the glass tube does not break when there is no water leakage. 6.2 If one sample in each group of samples fails, the group of samples shall be judged as failed. 7 Test report
7.1 The test report shall contain the following contents:
7.1.1 Name of test item;
7.1.2 Source of samples;
7.1.3 Type, specification and description of samples:
7.1.4 Test pressure and pressure holding time;
Test conclusion (pass or fail):
Tester and date.
Design pressure
Test pressure
Additional instructions:
HG/T2436--93
This standard is proposed by China National Chemical Equipment Corporation. This standard is drafted by Beijing Glass Instrument Factory. The main drafters of this standard are Liu Jiajun and Zheng Limei. This standard adopts ASTM C601-77 "Standard Method for Determining Pressure of Glass Pipes". Format: People's Republic of China Chemical Industry Standard Glass Pipe and Fittings Pressure Test Method HG/T2436-93 China Chemical Equipment Corporation Postal Code 100011 Printing Beijing Institute of Chemical Technology Printing Factory Reproduction is prohibited Copyright reserved 880×1230 6100 First printing in August 1993 First edition in August 1993
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