GB/T 21238-2007
Glass fiber reinforced plastics mortar pipes (English Version)

Standard No.

GB/T 21238-2007

Language

Chinese, Available in English version

Release Date

2007

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2017-05

Replace By

GB/T 21238-2016

Latest

GB/T 21238-2016

Replace

JC/T 695-1998 JC/T 838-1998 CJ/T 3079-1998

Scope

This standard specifies the classification and marking, raw materials, requirements, test methods, inspection rules, signs, packaging, transportation and storage of glass fiber reinforced plastic sand pipes (hereinafter referred to as FRPM pipes). This standard is applicable to underground and ground surfaces with a nominal diameter of 100 mm to 4 000 mm, a pressure level of 0.1 MPa to 2.5 MPa, and a ring stiffness level of 1 250 N/m "Superscript" 2 to 10 000 N/m "Superscript 2". FRPM pipes are used in pipeline projects such as water supply and drainage, water conservancy, and farmland irrigation, and the maximum temperature of the medium does not exceed 50°C. Non-sand-filled glass fiber reinforced plastic pipes and FRPM pipes whose nominal diameter, pressure level, and ring stiffness level are not within the scope of this standard are also Can refer to use.

GB/T 21238-2007 Referenced Document

• GB 13115 Hygienic standard of unsaturated polyester resin and glass fibre reinforced plastics used as food containers and packaging materials
• GB 5749 Hygienic Standards for Drinking Water*， 2022-03-15 Update
• GB/T 1447 Fiber-reinforced plastics composites---Determination of tensile properties
• GB/T 1449 Fibre-reinforced plastic composites-Determination of flexural properties
• GB/T 1458 Test method for mechanical properties of fiber-wound reinforced composite ring specimens*， 2023-09-07 Update
• GB/T 1634.2-2004 Plastics-Determination of temperature of deflection under load-Part 2:Plastics,ebonite and long-fibre-reinforced composites
• GB/T 18369 Glass fiber roving*， 2022-10-14 Update
• GB/T 2576 Test method for insoluble matter content of resin used in fiber reinforced plastics
• GB/T 2577 Test method for resin content of glass fiber reinforced plastics
• GB/T 3854 Test method for hardness of reinforced plastics by means of a Barcol impresser*， 2017-09-07 Update
• GB/T 5349 Fiber-reinforced thermosetting plastic composites pipe-Determination of longitudinal tensile properties
• GB/T 5351 Fiber-reinforced thermosetting plastic composites pipe-Determination of short-time hydraulic failure pressure
• GB/T 5352 Fiber-reinforced thermosetting plastic composites pipe-Determination for external loading properties by parallel-plate loading
• GB/T 8237 Liquid unsaturated polyester resin for fiber reinforced plastics
• ISO 10928:1997 Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Methods for regression analysis and their use
• ISO 8483:2003 Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Test methods to prove the design of bolted flange joints
• ISO 8533:2003 Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Test methods to prove the design of cemented or wrapped joints
• ISO 8639:2000 Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Test methods for leaktightness of flexible joints

GB/T 21238-2007 history

• 2016 GB/T 21238-2016 Glass fiber reinforced plastics mortar pipes
• 2007 GB/T 21238-2007 Glass fiber reinforced plastics mortar pipes

GB/T 21238-2007 Glass fiber reinforced plastics mortar pipes has been changed from JC/T 695-1998 Centrifugal casting glass fiber reinforced unsaturated polyester resin sand pipe.

GB/T 21238-2007 Glass fiber reinforced plastics mortar pipes has been changed from JC/T 838-1998 Glass fiber winding reinforced thermosetting resin sand inclusion pressure pipe.

GB/T 21238-2007 Glass fiber reinforced plastics mortar pipes has been changed from CJ/T 3079-1998 Glass fibre reinforced plastic mortar pipe.