GB/T 32491-2016Test method for long-Term hydrostatic pressure of glass fiber reinforced thermosetting resin pipe and fittings (English PDF)
玻璃纤维增强热固性树脂管及管件长期静水压试验方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 24, 2016
Implementation date
January 1, 2017
Scope
GB/T 32491-2016 is the English-translated version of 玻璃纤维增强热固性树脂管及管件长期静水压试验方法.
GB/T 32491-2016 is the Chinese standard "Test method for long-Term hydrostatic pressure of glass fiber reinforced thermosetting resin pipe and fittings".
Its scope clause reads: This standard specifies the term and definition of glass fiber reinforced thermosetting resin pipes and fittings for long-term hydrostatic test, test principle, specimen, Test conditions and test equipment, test procedures, hydrostatic design basis or pressure design basis to determine and re-identification, test reports.
This standard applies to thin-walled glass fiber reinforced thermosetting resin pipes and fittings. Note. The thin-walled tube means that the ratio of outer diameter to wall thickness is greater than or equal to 10.
1, which limits the internal pressure of the pipe. According to the circumferential stress equation, Is roughly 20% of the hydrostatic design basis and is independent of diameter. Its clauses include normative reference documents; terms and definitions.
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Document preview — GB/T 32491-2016
National Standard of the People's Republic of China
- ICS
- 83.120
- Classification
- Q 23
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 normative reference documents
- 3 terms and definitions
- 3.1 Free end seal free-endclosure
- 3.2 Constrained end closed
- 3.3 Failure
- 3.4 Toroidal stress hoopstress
1 Scope
This standard specifies the term and definition of glass fiber reinforced thermosetting resin pipes and fittings for long-term hydrostatic test, test principle, specimen,
Test conditions and test equipment, test procedures, hydrostatic design basis or pressure design basis to determine and re-identification, test reports.
This standard applies to thin-walled glass fiber reinforced thermosetting resin pipes and fittings.
Note. The thin-walled tube means that the ratio of outer diameter to wall thickness is greater than or equal to 10. 1, which limits the internal pressure of the pipe. According to the circumferential stress equation,
Is roughly 20% of the hydrostatic design basis and is independent of diameter.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Test method for short - term hydraulic pressure failure of GB/T 5351 fiber reinforced thermosetting plastic tubing
3 terms and definitions
The following terms and definitions apply to this document.
3.1 Free end seal free-endclosure
A seal device which is fixed at the end of the specimen so that the specimen can produce axial stress in addition to the circumferential stress, structure.
3.2 Constrained end closed
A seal or structure fixed to the end of the specimen, which relies on a rod or external structure that passes through the interior of the specimen,
From the axial thrust, so as to limit the stress in the sample ring.
3.3 Failure
The test liquid flows in any form through the test tube, such as wall fracture, partial leakage, greater than double the diameter of the seal
The distance outside the liquid exudation.
Note. For this standard, the sample has not yet failed, according to 6.6 and 9.2 specific conditions, can also be used as a failure.
3.4 Toroidal stress hoopstress
The tensile stress in the circumferential direction caused by the internal pressure in the tube wall of the tubular product. The circumferential stress was measured by a straight hollow cylinder sample (1) Calculation.
S = p D - tr ()/2tr () (1)
Where.
S --- toroidal stress in MPa (MPa);
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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