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GB/T 32378-2015: Glass-reinforced thermosetting plastics (GRP) pipes -- Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions
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| GB/T 32378-2015 | English | 234 |
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Glass-reinforced thermosetting plastics (GRP) pipes -- Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions
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GB/T 32378-2015
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PDF similar to GB/T 32378-2015
Basic data | Standard ID | GB/T 32378-2015 (GB/T32378-2015) | | Description (Translated English) | Glass-reinforced thermosetting plastics (GRP) pipes -- Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q23 | | Classification of International Standard | 13.100 | | Word Count Estimation | 12,198 | | Date of Issue | 2015-12-31 | | Date of Implementation | 2016-11-01 | | Regulation (derived from) | State Standard Announcement 2015 No.43 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 32378-2015: Glass-reinforced thermosetting plastics (GRP) pipes -- Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions
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Glass-reinforced thermosetting plastics (GRP) pipes-Determination of the long-ultimate bending strain and the long-term ultimate relative ring deflection under wet conditons
ICS 83.120
Q23
National Standards of People's Republic of China
Glass fiber-reinforced thermosetting plastics (GRP) pipes
Long-term ultimate bending strain and under wet environment
Relatively long ring deformation measurement limit
Glass-reinforcedthermosettingplastics (GRP) pipes-
(ISO 10471.2003, IDT)
Issued on. 2015-12-31
2016-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard uses the translation method identical with ISO 10471.2003 "Glass fiber-reinforced thermosetting plastics (GRP) pipes under wet environment long
Determination of the relative deformation ring ultimate bending strain and the long-term limit "and Amd.1.2010.
This standard made the following editorial changes.
--- Increased in terms of number 5.1,5.3,11.1, Chapter 6 and Chapter 8.
--- Inclusion content technologies errata.
The standard proposed by China Building Materials Federation.
The standard fiber-reinforced plastic by the National Standardization Technical Committee (SAC/TC39) centralized.
This standard is drafted by. Beijing FRP Research and Design Institute Co., Ltd., Wuhan University, Tongji University, Zhejiang Orient Habo tube
Co., Ltd., Hebei KNT FRP Co., Ltd.
The main drafters. Zhang Lichen, Li Tong, Chen Jianzhong, Zhou Shigang, Suyue Hui, Gao East, Yang Festival marked.
Glass fiber-reinforced thermosetting plastics (GRP) pipes
Long-term ultimate bending strain and under wet environment
Relatively long ring deformation measurement limit
1 Scope
This standard specifies the extrapolation method for the determination of glass fiber-reinforced thermosetting plastics (GRP) pipes in the wet environment of long-term ultimate bending should
Long-term change and limit the relative ring deformation.
This standard gives two loading ways. one is to load the board, the other is the support beams.
Note. When testing the relative radial deformation of not more than 28% when the two loading modes may be employed; when the relative radial deformation of the test is greater than 28% when loading to
To refrain from using a support beam.
This standard applies to thin-walled glass fiber reinforced thermosetting resin pipe and pipe fittings.
Note. refers to thin-walled tube diameter and wall thickness ratio greater than or equal to 10.1, the conditions within the pressure tube, the inner design based on hoop stress equation, the pipeline
Pressure is generally 20% of the hydrostatic design basis, and is independent of the diameter.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Determination of ISO 7685 Plastics piping systems - Glass - reinforced thermosetting plastics (GRP) pipes initial ring stiffness [Plastics
pipingsystems-Glass-reinforcedthermosetting plastics (GRP) pipes-Determination ofinitial
specificringstiffness]
ISO 10928.1997 Plastics piping systems - Glass - reinforced thermosetting plastics (GRP) pipes and fittings and make regression analysis
Method [Plasticspipingsystems-Glass-reinforcedthermosettingplastics (GRP) pipesandfittings-
Methodsforregressionanalysisandtheiruse]
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Radial compressive force verticalcompressiveforce
Applied to the horizontally disposed tubes, the tube is deformed to produce radial forces in Newtons (N).
3.2
The average diameter meandiameter
dm
Calculated diameter in the tube in meters (m), by equation (1) and (2) is obtained.
dm = di e (1)
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