HG/T 2799-1996 Plastic hose for suction and low-pressure discharge of petroleum liquids HG/T2799-1996 Standard download decompression password: www.bzxz.net

HG/T2799—1996
This standard is equivalent to the international standard JS () 6808: 1984 Specification for plastic hoses for suction and low-pressure discharge of petroleum liquids.
The difference between this standard and the international standard ISO6808; 1984: A preface was added
In the introduction, the second paragraph "The nominal inner diameters listed in Tables 1 and 2 are not restrictive regulations, and do not restrict the manufacture of hoses with specifications outside the priority number range (the base number in the table). Such specifications may only be a problem of individual national standards.\Because the inner diameters of hoses in my country basically use priority numbers and priority number systems. In the referenced standards in Chapter 2, "Introduction\, the referenced standards added the year: 1S06808 The reference mark I507751 that was not mentioned in the text was deleted:
In 4.2, the provision "Except that the length of supply should meet the requirements of the specified user" was added to make this standard more complete: In the? "Example" is added to the chapter mark to make it more in line with Chinese habits and easier to implement. This standard was first issued on April 10, 1996 and implemented on January 1, 1997. Appendix A of this standard is the standard appendix, and Appendix R is the reminder appendix. This standard was proposed by the National Technical Committee for Standardization of Rubber and Rubber Products. This standard is under the jurisdiction of the Hose Sub-Technical Committee of the National Technical Committee for Standardization of Rubber and Rubber Products. The drafting unit of this standard: Shenyang Rubber Industry Products Research Institute of the Ministry of Chemical Industry. The main drafters of this standard: Liu Lianchun and Zhao Jingxian. 293
HG/T2799-1996
ISO former
ISO (International Organization for Standardization) is a worldwide federation of national standard bodies (ISO (member bodies)). The work of formulating international standards is carried out through ISO's technical committees. Any member body interested in the project for which a technical committee has been established has the right to participate in the committee. All governmental and non-governmental international organizations that have relations with ISO can participate in this work. Draft international standards adopted by the technical committees are sent to the member bodies for voting before being approved as international standards by the TSO Council. According to ISO procedures, at least 75% of the member bodies must vote in favor for adoption. International Standard 1SO6808 was prepared by 1SO/TC.15 "Rubber and Rubber Products\Technical Committee. 294
Chemical Industry Standard of the People's Republic of China
Plastic hose for suction and low-pressure discharge of petroleum liquids HG/T2799—1996
eqv 1S0 6808:1984
This standard was developed to establish minimum requirements for the acceptable performance of polymer reinforced thermoplastic hoses for the discharge and suction of kerosene, heating oil, diesel and lubricating oils. Such hoses are not suitable for the transportation of motor vehicle or aviation fuels, nor for the metered delivery of liquids. 1 Range
This standard specifies the requirements for two types of polymer reinforced thermoplastic hoses for the discharge and suction of kerosene, heating oil, diesel and lubricating oils within a temperature range of 10°C to 160°C: [Type—
-Light;
Heavy.
2 Referenced Standards1
Under The clauses contained in the listed standards constitute the meaning of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. The parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1040-1992 Plastic tensile test method (neqIS0/R527:1986) GB/I1690-1992 Vulcanized rubber liquid resistance test method (neqISO1817:1985) GB/T24111980 (1989) Plastics Molli hardness test method (neqIS868:1978) GB 29411991
Standard temperature and aging time for environmental conditioning and testing of rubber test specimens (eqVISO471:1983 and ISO 1826:1981)
GB/T3512-1983(1989)Test method for hot air aging of rubber (neISO188:1976)GB/T5563-1994Hydraulic test method for rubber and plastic hoses and hose assembliesGB/T 5564-1994
GB/T 3565-1994
G3/T 5567--1994
GB/T 9572-1988
GB/T 9575--1988
Low temperature flexure test for rubber and plastic hoses (neg JSC) 4672:1988) Bend test for rubber or plastic hoses and pure rubber hoses (neg IS01746:1983) Determination of vacuum performance of rubber, plastic hoses and hose assemblies Determination of resistance of rubber, plastic hoses and hose assemblies (e4v IS08031:1987) Rubber, plastic hoses Internal diameter size and length tolerance (idt 1SO 1307;1983) ISO 176:1976
3 Materials and construction
Determination of plasticizer loss - activated carbon method The color, opacity and other physical properties of the hose should be in accordance with commercial practice. Flexible thermoplastic materials are reinforced in the body by winding polymer materials of similar molecular structure. The reinforcing components and flexible parts of the tube wall should be able to melt and should not have visible cracks, pores, foreign matter or other defects that may cause the hose to be unusable. The hose joints should be able to conduct electricity. An antistatic tape should be welded on the outer surface of the hose to ensure the continuity of conduction. The antistatic tape should be a braided copper wire coated with a suitable plastic material and should be fixed on the metal pipe joint to ensure the reliable continuity of conduction of the hose during the entire use process. The method to ensure the continuity of conduction of the hose is the responsibility of the hose manufacturer. The method used should satisfy the user. 4 Dimensions and tolerances
4.1 Inner diameter
According to GR/T9575: The hose should meet the requirements of Table 1 and Table 2. Note: If under special circumstances, the size of the relaxation is required: a) If the size is smaller or larger, the value should be selected from the priority number system R10-the tolerance should comply with the provisions of GB/T9575: b) If the size is an intermediate size, the value should be selected from the priority number system R20, and the tolerance should be the value of the adjacent larger size. Table 11 Nominal inner diameter and tolerance of hose
Nominal inner diameter
Table 22 Nominal inner diameter and tolerance of hose
Nominal inner diameter
4.2 Length
In addition to the supplied length should meet the needs of users, the hose cutting length tolerance should comply with the provisions of Table 3, Table 3 Hose cutting length tolerance
Nominal inner diameter, mm
10 and below 40
20 and above
Adoption instructions:
111S0 6808 has no such provisions.
Tolerance of cutting length, %
5 Physical tests on finished hoses
5.1 Hydrostatic test
HG/T 2799—1996
5.1. 1 When tested in accordance with the method specified in GB/T 5563 and at the standard test laboratory temperature specified in GB2941, the hose shall comply with the requirements specified in Table 4.
Table 4 Hydrostatic test working pressure at standard test laboratory temperature, MPa
Nominal inside diameter, an
63:-125
Note: The values ​​listed in the table are based on the following safety factors: 1 Type—4: 1: 2 Type—5: 1 Minimum bursting pressure, MPabzxz.net
Inspect the hose at the test pressure (50% of the minimum bursting pressure). There shall be no leakage, cracking, deformation or damage to the conductive continuity. 5.1.2 When the hose is tested at (55±2)℃ according to the method specified in GB/T 5563, it shall meet the requirements specified in Table 5. Table 5 Pressure for hydrostatic test of all specifications of hose at (55±2)℃: MPa
Note: The values ​​listed in the table are based on the following safety factors: Type 1-4: 1; Type 2-5: 15.2 Length change (only applicable to Type 2)
Minimum burst pressure, MPa
When tested at the standard test room temperature specified in GB 2941 according to the method specified in GB/T 5563, the change in hose length should not be greater than 20% at the test pressure (see 5.1.1) 21. Note: Conductive continuity should also be tested at the same time (see 5.7): 5.3 Vacuum test
According to the method specified in GB/T 5567. Type 1 at 65 kPa,Type 2 When tested at an internal pressure of 80 kPa (less than atmospheric pressure), the hose shall not collapse or be damaged at a distance from the pipe joint that is greater than the hose diameter. If damage occurs near the pipe joint, the test result shall be invalid and the specimen shall be replaced and retested. 5.4 Reinforcement layer rupture test
When tested in accordance with the method specified in Appendix A (Standard Appendix), the polymer reinforcement layer shall be able to be reverse bent without rupture after the hose is unfolded on the unfolded test block of the corresponding specification listed in Table 6 for 336 h. NOTE This time is used as the quality control test time. If it is a finalization test, the time should be four months. Adoption instructions:
11 TSO 6808 is 63.5, which is incorrect. 21 IS0 6808 does not specify the test pressure. 297
5.5 Minimum bending diameter
Nominal inner diameter
HG/T 2799—1996
Table 6 Break test expansion test block
Expand test block width
According to the requirements of GB/T5565, when the hose is subjected to the bending test at the standard laboratory temperature with a minimum bending diameter of 8 times the nominal inner diameter, no cracking should occur.
5.6 Low temperature bending test
5.6.1 Condition the hose at (-10±2)℃ for 5h, and then test it at the same temperature with a minimum bending diameter of 32 times the nominal inner diameter according to GB/T5564 method B. Cracks should not occur. 5.6.2 According to the provisions of GB/11690, after aging for 70h+h in No. 3 standard push oil at (100±1)℃. Then test according to 5.6.1. The hose should not crack.
5.7 Conductive continuity
Measure the resistance between the hose joints according to the method specified in GB/T9572. The value should not exceed 2.0MQ/m. 6 Physical properties of flexible thermoplastic materials
6.1 Heating loss
Test according to ISO 17G1 method B. The mass loss of the multiplier thermoplastic material used to manufacture the hose should not be greater than 4%. 6.2 Tensile strength and elongation at break
Test according to the method specified in GB/T1040. The minimum tensile strength and minimum elongation at break of the flexible thermoplastic material used to manufacture the hose should comply with the provisions of Table 7.
Tensile strength and elongation at break
Tensile strength, MPa
6. 3 Fuel resistance
Tensile elongation at break, %
According to the standard test room temperature specified in GB2941, the thermoplastic material used to manufacture the hose is immersed in standard liquid B for 48h-h, and then tested according to the provisions of GB/T1690. Its performance should not exceed the limit values ​​given in Table 8. Table 8 Fuel resistance
Maximum change rate of tensile strength with pressure, %
Maximum change rate of elongation at break, %
Volume change rate, end
Limit value
- 5~～+25
6. 4 Oil resistance
HG/T 2799 1996
The flexible thermoplastic material used to manufacture the hose is soaked in No. 3 standard oil at (70+1)℃ for 7Uhh and then tested according to the provisions of GB/T1690. Its performance should not exceed the limit values ​​given in Table 9. Table 9 Oil resistance
Maximum change rate of tensile strength, %
Maximum cavitation rate of elongation at break, added volume change rate, and
6.5 Accelerated aging resistance
Limit value
— 5·~+25
After aging the thermoplastic material at (100+1)°C for 3d according to the method specified in GB/T.3512, the test is carried out according to the methods specified in GI/T1040 and GB/T2411. The performance should not exceed the limit values ​​given in Table 10. Table 10 Changes in aging properties
Maximum rate of change of tensile strength, %
Maximum rate of change of elongation at break, %
Maximum change in thickness (Shore A)
Limit value
The hose body should be marked with a permanent mark with a large color contrast. The character height should be at least 5 mm. The marking content includes: a) Manufacturer name or trademark:
h) Number of this standard;
) Hose type
d) Nominal inside diameter of hose:
ε) Year of manufacture (mark the last two digits) Season (Q) Example:
IIG/T ××××-××××
Instructions for use:
TSO6808 does not have this example.
94—2Q
Date of manufacture
Nominal inner diameter
Hose model
Number of this standard
Name of manufacturer
A1 Test device
HG/T2799—1996
Appendix A
(Appendix of the standard)
Reinforcement layer fracture test
The device is a development test block made of short-section hardwood strips or metal with the corresponding width given in Table 6. A2 Specimen
The specimen should contain three reinforcing spiral turns, and the specimen should be cut with a ten-clean cutter along the longitudinal direction of the specimen. Three specimens should be taken for testing. A3 Conditioning
The hose should not be tested within 24 hours after manufacture. The specimen should be conditioned for 3 hours at the standard test room temperature specified in GB2941. This 3 hours can be calculated within 24 hours before the test. A4 Test procedure
Open the specimen and buckle it on the unfolded test block corresponding to the corresponding inner diameter specified in Table 6 (see Figure A1). Then leave it for 336 hours or four months depending on the test type. Fold the specimen back until the outer surface of the specimen is in contact (see Figure A2) and check whether the spiral wire in the specimen is broken. Outer surface
Inner surface
W. 1) Test block construction (male table 6)
Figure A1 Test section of test specimen under expansion
A5 Test report
The test report shall include the following contents:
) Whether the specimen is damaged; if damaged, indicate the location and shape of the damage; 2) Test temperature:
c) Test time,
Figure A2 Cross-sectional view of test specimen under folding
HG/T 2799-1996
Appendix B
(Suggestive appendix)
References
[]]Compiled by the First Branch of Chenguang Chemical Research Institute, Ministry of Chemical Industry, International Standard for Plastics Industry—ISO/TC-61, Light Industry Press, July 19902 Tensile strength and elongation at break
The test shall be carried out in accordance with the method specified in GB/T1040. The minimum tensile strength and minimum elongation at break of the flexible thermoplastic material used to manufacture the hose shall comply with the provisions of Table 7.
Tensile strength and elongation at break
Tensile strength, MPa
6. 3 Fuel resistance
Elongation at break, %
According to the standard test room temperature specified in GB2941, the flexible thermoplastic material used to manufacture the hose is immersed in the standard liquid B for 48h-h, and then tested in accordance with the provisions of GB/T1690. Its performance shall not exceed the limit values ​​given in Table 8. Table 8 Fuel resistance
Maximum change rate of tensile strength with pressure, %
Maximum change rate of elongation at break, %
Volume change rate, end
Limit value
- 5~～+25
6. 4 Oil resistance
HG/T 2799 1996
The flexible thermoplastic material used to manufacture the hose is soaked in No. 3 standard oil at (70+1)℃ for 7Uhh and then tested according to the provisions of GB/T1690. Its performance should not exceed the limit values ​​given in Table 9. Table 9 Oil resistance
Maximum change rate of tensile strength, %
Maximum cavitation rate of elongation at break, added volume change rate, and
6.5 Accelerated aging resistance
Limit value
— 5·~+25
After aging the thermoplastic material at (100+1)°C for 3d according to the method specified in GB/T.3512, the test is carried out according to the methods specified in GI/T1040 and GB/T2411. The performance should not exceed the limit values ​​given in Table 10. Table 10 Changes in aging properties
Maximum rate of change of tensile strength, %
Maximum rate of change of elongation at break, %
Maximum change in thickness (Shore A)
Limit value
The hose body should be marked with a permanent mark with a large color contrast. The character height should be at least 5 mm. The marking content includes: a) Manufacturer's name or trademark:
h) Number of this standard;
) Hose type
d) Nominal inside diameter of hose:
ε) Year of manufacture (mark the last two digits) Season (Q) Example:
IIG/T ××××-××××
Instructions for use:
TSO6808 does not have this example.
94—2Q
Date of manufacture
Nominal inner diameter
Hose model
Number of this standard
Name of manufacturer
A1 Test device
HG/T2799—1996
Appendix A
(Appendix of the standard)
Reinforcement layer fracture test
The device is a development test block made of short-section hardwood strips or metal with the corresponding width given in Table 6. A2 Specimen
The specimen should contain three reinforcing spiral turns, and the specimen should be cut with a ten-clean cutter along the longitudinal direction of the specimen. Three specimens should be taken for testing. A3 Conditioning
The hose should not be tested within 24 hours after manufacture. The specimen should be conditioned for 3 hours at the standard test room temperature specified in GB2941. This 3 hours can be calculated within 24 hours before the test. A4 Test procedure
Open the specimen and buckle it on the unfolded test block corresponding to the corresponding inner diameter specified in Table 6 (see Figure A1). Then leave it for 336 hours or four months depending on the test type. Fold the specimen back until the outer surface of the specimen is in contact (see Figure A2) and check whether the spiral wire in the specimen is broken. Outer surface
Inner surface
W. 1) Test block construction (male table 6)
Figure A1 Test specimen expansion test section diagram
A5 Test report
The test report should include the following contents:
) Whether the specimen is damaged, if damaged, explain the damaged part and shape; 1) Test temperature:
c) Test time,
Figure A2 Test specimen folding test section diagram
HG/T 2799- 1996
Appendix B
(Suggestive appendix)
References
[]]Compiled by the First Branch of Chenguang Chemical Research Institute, Ministry of Chemical Industry, International Standard for Plastics Industry - ISO/TC-61, Light Industry Press, July 19902 Tensile strength and elongation at break
The test shall be carried out in accordance with the method specified in GB/T1040. The minimum tensile strength and minimum elongation at break of the flexible thermoplastic material used to manufacture the hose shall comply with the provisions of Table 7.
Tensile strength and elongation at break
Tensile strength, MPa
6. 3 Fuel resistance
Elongation at break, %
According to the standard test room temperature specified in GB2941, the flexible thermoplastic material used to manufacture the hose is immersed in the standard liquid B for 48h-h, and then tested in accordance with the provisions of GB/T1690. Its performance shall not exceed the limit values ​​given in Table 8. Table 8 Fuel resistance
Maximum change rate of tensile strength with pressure, %
Maximum change rate of elongation at break, %
Volume change rate, end
Limit value
- 5~～+25
6. 4 Oil resistance
HG/T 2799 1996
The flexible thermoplastic material used to manufacture the hose is soaked in No. 3 standard oil at (70+1)℃ for 7Uhh and then tested according to the provisions of GB/T1690. Its performance should not exceed the limit values ​​given in Table 9. Table 9 Oil resistance
Maximum change rate of tensile strength, %
Maximum cavitation rate of elongation at break, added volume change rate, and
6.5 Accelerated aging resistance
Limit value
— 5·~+25
After aging the thermoplastic material at (100+1)°C for 3d according to the method specified in GB/T.3512, the test is carried out according to the methods specified in GI/T1040 and GB/T2411. The performance should not exceed the limit values ​​given in Table 10. Table 10 Changes in aging properties
Maximum rate of change of tensile strength, %
Maximum rate of change of elongation at break, %
Maximum change in thickness (Shore A)
Limit value
The hose body should be marked with a permanent mark with a large color contrast. The character height should be at least 5 mm. The marking content includes: a) Manufacturer's name or trademark:
h) Number of this standard;
) Hose type
d) Nominal inside diameter of hose:
ε) Year of manufacture (mark the last two digits) Season (Q) Example:
IIG/T ××××-××××
Instructions for use:
TSO6808 does not have this example.
94—2Q
Date of manufacture
Nominal inner diameter
Hose model
Number of this standard
Name of manufacturer
A1 Test device
HG/T2799—1996
Appendix A
(Appendix of the standard)
Reinforcement layer fracture test
The device is a development test block made of short-section hardwood strips or metal with the corresponding width given in Table 6. A2 Specimen
The specimen should contain three reinforcing spiral turns, and the specimen should be cut with a ten-clean cutter along the longitudinal direction of the specimen. Three specimens should be taken for testing. A3 Conditioning
The hose should not be tested within 24 hours after manufacture. The specimen should be conditioned for 3 hours at the standard test room temperature specified in GB2941. This 3 hours can be calculated within 24 hours before the test. A4 Test procedure
Open the specimen and buckle it on the unfolded test block corresponding to the corresponding inner diameter specified in Table 6 (see Figure A1). Then leave it for 336 hours or four months depending on the test type. Fold the specimen back until the outer surface of the specimen is in contact (see Figure A2) and check whether the spiral wire in the specimen is broken. Outer surface
Inner surface
W. 1) Test block construction (male table 6)
Figure A1 Test section of test specimen under expansion
A5 Test report
The test report shall include the following contents:
) Whether the specimen is damaged; if damaged, indicate the location and shape of the damage; 2) Test temperature:
c) Test time,
Figure A2 Cross-sectional view of test specimen under folding
HG/T 2799-1996
Appendix B
(Suggestive appendix)
References
[]]Compiled by the First Branch of Chenguang Chemical Research Institute, Ministry of Chemical Industry, International Standard for Plastics Industry—ISO/TC-61, Light Industry Press, July 1990
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