CJ/T 225-2011 English PDF (CJT225-2011)

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CJ/T 225-2011: Metal reinforced polyethylene (PE) spirally corrugated pipe for underground sewer
CJ/T 225-2011
CJ
Industry Standard
of the People’s Republic of China
Replace CJ/T 225-2006
Metal reinforced polyethylene (PE) spiral
corrugated pipe for underground sewer
ISSUED ON. APRIL 18, 2011
IMPLEMENTED ON. OCTOBER 1, 2011
Issued by. Ministry of Housing and Urban-Rural Development of the
People's Republic of China
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions, symbols, and abbreviations ... 6 
4 Raw material ... 8 
5 Classification and marking ... 9 
6 Pipe structure and connection methods ... 10 
7 Requirements ... 11 
8 Test method ... 14 
9 Inspection rules ... 17 
10 Marking, transportation, and storage ... 19 
Annex A ... 20 
Annex B ... 22 
Annex C ... 23 
Annex D ... 29 
Annex E ... 30 
Annex F ... 31 
Annex G ... 34 
Annex H ... 36 
Foreword
This Standard is prepared according to the rules specified in GB/T 1.1-2009.
This Standard is an revision to CJ/T 225-2006 “Metal Reinforced Polyethylene (PE)
Spiral Corrugated Pipe for Underground Sewer”. Compared with CJ/T 225-2006, the
changes of main technical content are as follows.
— INCREASE technical indictors’ requirements of raw materials, and ADD
galvanized steel-strip.
— PROPOSE the requirements of dividing sections according to the pipe diameter,
and IMPROVE indicators for the tensile strength of the laminated wall and
welding seam.
— ADD planar-shaped port pipe that is vertical to axis in pipe structure.
— PERFORM larger revision on connection type and method. ADD planar-shaped
port form in connection type (listed in Annex C).
— ADD ring-stiffness SN10 level.
— ADD pipe dimensions of 2200, 2400, and 2600 specifications.
— ADD Annex B Test Method of Adhesive Resin Water Immersion Resistance
Performance, Annex C Common Pipe Connection Type, Annex D Preparation of
Ring-stiffness Sample, and Annex E Preparation Method of Pipe Laminated Wall
Tensile Strength Test Sample.
This Standard was proposed by Standard Rating Institute of Ministry of Housing and
Urban-rural Development.
This Standard shall be under jurisdiction of Water Supply and Drainage Products
Standardization Technical Committee of the Ministry of Housing and Urban-rural
Development.
Responsible drafting organization of this Standard. Sichuan Senpu Pipe Co., Ltd.
Participating drafting organizations of this Standard. Tianjin Shengxiang Plastic Pipe
Industry Co., Ltd., Guizhou Senrui Pipe Industry Co., Ltd., Shanghai Banzan
Macromolecule Material Co., Ltd., Cangzhou Mingzhu Plastic Co., Ltd., Guangdong
Liansu Technology Industrial Co., Ltd., Guangzhou Fengye Pipe Industrial Co., Ltd.,
Sichuan Goldstone Orient New Material Equipment Inc., Sichuan Huangsheng Pipe
Industry Co., Ltd., Xiamen Honghao Pipe Industry Co., Ltd., Ezhou Xingxin Building
Materials Co., Ltd., Hangzhou Boda Plastic Technology Co., Ltd., CNLON Co., Ltd.,
Changsha Qianyan Plastic Technology Development Co., Ltd., Shandong Chenshi
Group Co., Ltd., and Huangsheng Pipe Group Co., Ltd.
Main drafters of this Standard. Jiang Zepei, Li Zhi, Li Wenquan, Li Xiaomin, Bi Honghai,
Jia Xiaohui, Li Xintuan, He Jianxing, Chen Shaojiang, Wu Zhiguo, Zheng Haoyun,
Jiang Jinhua, Chen Huasheng, Ye Zhengmao, Fan Gang, Chu Jiangshun, Chen
Xiantao, Wu Jinghua, and Shao Taiqing.
Previous version of the standard replaced by this Standard are as follows.
— CJ/T 225-2006.
Metal reinforced polyethylene (PE)
spiral corrugated pipe for underground sewer
1 Scope
This Standard specifies the terms and definitions, symbols, abbreviations, raw
materials, grading and marking, pipe structure and connection methods, requirements,
test methods, inspection rules, marking, transportation and storage of the metal
reinforced polyethylene (PE) spiral corrugated pipe.
This Standard applies to the rainwater, sewage and other underground drainage
pipeline with transmission medium temperature not greater than 45°C.
2 Normative references
The following documents are essential for the application of this Standard. For dated
references, only dated edition applies to this Standard. For undated references, the
latest edition (including all amendments) applies.
GB/T 228 Metallic materials - Tensile testing at ambient temperature
GB/T 1033.1 Plastics - Methods for determining the density of non-cellular plastics
- Part 1. Immersion method liquid pyknometer method and titration method
GB/T 1633 Plastics - Thermoplastic materials - Determination of Vicat softening
temperature (VST)
GB/T 1842 Plastics - Test method for environmental stress-cracking of polyethylene
GB/T 2828.1-2003 Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 2918 Plastics - Standard atmospheres for conditioning and testing
GB/T 3682 Determination of the melt mass-flow rate (MFR) and the melt volume-
flow rate (MVR) of thermoplastics
GB/T 5470 Plastics - Determination of the brittleness temperature by impact
GB/T 6111 Thermoplastics pipes for the conveyance of fluids - Resistance to
internal pressure - Test method
GB/T 8840.3 Thermoplastic pipes - Determination of tensile properties - Part 3.
Polyolefin pipes
GB/T 9341 Plastics - Determination of flexural properties
GB/T 9345.1 Plastics - Determination of ash - Part 1. General methods
GB/T 9647 Thermoplastics pipes - Determination of ring-stiffness
GB/T 14152-2001 Thermoplastics pipes - Determination of resistance to external
blows - Round-the-clock method
GB/T 17391 Test method for thermal stability of polyethylene pipes and fittings
GB/T 13021 Determination for the carbon-black content of polyethylene pipes and
fittings by calcination and pyrolysis
GB/T 18042 Thermoplastics pipes - Determination of creep ratio
GB/T 19472.2 Polyethylene structure-wall piping system for underground usage -
Part 2. Polyethylene spirally enwound structure-wall pipes
GB/T 19789 Packaging materials – Test method for oxygen gas permeability
characteristics of plastic film and sheeting - Coulometric sensor
3 Terms and definitions, symbols, and abbreviations
The following terms and definitions, symbols, and abbreviations are applicable to this
document.
3.1 Terms and definitions
3.1.1 Metal reinforced polyethylene (PE) corrugated pipe, MRP
The metal reinforced spiral corrugated pipe that takes polyethylene (PE) resin as
matrix; uses the steel-strip of which the surface is coated with adhesive resin and is
shaped into waveform as the main support structure; and combines with the inner and
outer layers of polyethylene into overall inner wall straightness type.
3.1.2 Anticorrosion layer thickness
The sum of the thickness of the outer layer polyethylene of pipe’s steel-strip and the
thickness of the adhesive resin.
3.1.3 Spigot length
The effective length of the outer circumferential surface of socket-and-spigot-type
8 Test method
8.1 Pretreatment of samples
Unless otherwise specified, the pretreatment of the sample shall comply with the
provisions of GB/T 2918. ADJUST the state and test the samples under the
temperature of 23°C ± 2°C; the time for state adjustment shall not be less than 48 h.
8.2 Appearance and color
Visual inspection, inner wall can be irradiated by light source.
8.3 Dimensions
8.3.1 Length
Pipe length shall be measured by a flexible ruler with the minimum scale of being not
...