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CJ/T 409-2012 (CJ/T409-2012, CJT 409-2012, CJT409-2012) & related versions
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CJ/T 409-2012: PDF in English (CJT 409-2012)
CJ/T 409-2012
ICS 91.140
Q 86
Technical Requirement of
Fiber-Glass Reinforced Plastic Septic Tank
Issued by. Ministry of Housing and Urban-Rural Development of the
People's Republic of China
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Raw Materials ... 5 
4 Model and Structure ... 5 
5 Requirements ... 6 
6 Test Methods ... 7 
7 Inspection Rules ... 8 
8 Label, Package, Transportation and Storage ... 9 
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard was proposed by Standard and Quantity Institute, Ministry of Housing
and Urban-Rural Development.
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Building Water Supply and Drainage - Ministry of Housing
and Urban-Rural Development.
Drafting organizations of this Standard. Henan Yeajar Environmental Protection Co.,
Ltd., and Beijing Sino-Japanese Chengqimei Environment Technology
Development Co., Ltd.
Participating drafting organizations of this Standard. Hebei (Yijia) Jiewei Environ-Tech
Co., Ltd., Shaanxi Yijia Environ-Tech Co., Ltd., Fuzhou Yilin Environment Technology
Co., Ltd., Hangzhou Jiaqing Environment Technology Co., Ltd., Wuhan Green Tide
Environ-Tech Co., Ltd., Guangzhou Kangwei Envrion-Tech Co., Ltd., Ganshu Yijia
Environmental Engineering Co., Ltd., Guangxi Nanning Guixiang Environmental
Science and Technology Co., Ltd., Hunan Timelion Composite Materials Co., Ltd.,
Zhangjiagang Wilson Environmental Protection Equipment Co., Ltd., and Shanghai
Green Tide Environmental Protection Co., Ltd.
Chief drafting staffs of this Standard. Xu Shaorong, Liu Hongqiang, Yang Qingxue, Li
Jianzhi, Liang Yanqiang, Hao Jihu, Lin Yongfu, Weng Aifu, Yu Jianjun, Liu Xianqi,
Shen Ling, Huang Yuehou, Zeng Jianxiang, Li Wenqing, Liang Xiaohong, Xing Tao, Li
Rongxiang, Huang Jianfen, and Han Zhihe.
Technical Requirement of
Fiber-Glass Reinforced Plastic Septic Tank
1 Scope
This Standard specifies the raw material, model and structure, requirements, test
methods, inspection rules, label, package, transportation and storage of fiber-glass
reinforced plastic septic tank (herein after refers to “septic tank”).
This Standard is applicable to the septic tank with raw materials of glass fiber and
unsaturated polyester resin.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this Standard.
GB/T 1447 Test Method for Tensile Properties of Glass Fiber - Reinforced Plastics
GB/T 1449 Test Method for Flexural Properties of Glass Fiber - Reinforced
GB/T 1462 Test Methods for Water Absorption of Fiber Reinforced Plastics
GB/T 2575 Test Method for Resistance of Glass Fiber Reinforced Plastics to
GB/T 3854 Test Method for Hardness of Reinforced Plastics By Means of Barcol
GB/T 8237 Liquid Unsaturated Polyester Resin for Fiber Reinforced Plastics
GB/T 18369 Glass Fiber Roving
GB/T 18370 Glass Fibre Woven Roving
GB/T 21238 Glass Fiber Reinforced Plastics Mortar Pipes
6.6 Water absorption rate
It shall be measured as per GB/T 1462.
6.7 Water resistance
It shall be measured as per GB/T 2575.
6.8 Impact strength
In the place over the central position of the septic tank (avoid the cleaning hole), use a
2000g steel ball to conduct free fall from the height 2m; measure at the place where
the steel ball impacts.
6.9 Leakage test
Fix the septic tank in backfill or other modes; seal the inlet and outlet, fill the tank with
water thoroughly; stand for 24h to observe; there shall be no leakage or obvious
deformation phenomena.
6.10 Initial ring stiffness
It shall be measured as per GB/T 21238.
7 Inspection Rules
Inspection is divided into exit-factory inspection and type inspection.
7.1 Exit-factory inspection
7.1.1 Inspection items
Before each septic tank leaves the factory, it shall conduct inspection items in 5.1, 5.2
and 5.3.6.
7.1.2 Judgment rules
If each item in exit-factory inspection conforms to the requirements, then the product
shall be judged as qualified. If there are disqualified items, the product shall be
repaired once, then re-inspect; if it is still disqualified after repairing, then judge this
batch of products as disqualified.
7.2 Type Inspection
7.2.1 Type inspection conditions
Type inspection includes all items in Chapter 5. When one of the following conditions
occurs, the type inspection shall be conducted.
a) When determining the product model and put into production;
b) When raw materials and formulation have significant changes, which may affect
the product performance;
c) Conduct the inspection every three years for normal production;
d) Restore production when shutdown for more than half a year.
7.2.2 Sampling
Conduct sampling from the qualified products in exit-factory inspection.
7.2.3 Judgment
After inspection, if there are disqualified items, allow for double sampling and
re-inspecting. After that, if there are still disqualified items, then such batch of product
shall be judged as disqualified.
8 Label, Package, Transportation and Storage
8.1 Label
After test is qualified, the products shall have the following labels.
a) Trademark;
b) Serial number;
c) Product name;
d) Specification, model;
e) Direction marks for the inlet and outlet water pipe;
f) Manufacturer name;
g) Contact phone;
h) Production reference standards.
8.2 Package
Generally, the septic tank shall not be packed.
When leaving the factory, the septic tank shall have qualification certificate, and

Standard ID CJ/T 409-2012 (CJ/T409-2012)
Description (Translated English) Technical requirement of fiber-glass reinforced plastic septic tank
Sector / Industry Urban Construction Industry Standard (Recommended)
Classification of Chinese Standard Q86
Classification of International Standard 91.140
Word Count Estimation 8,893
Quoted Standard GB/T 1447; GB/T 1449; GB/T 1462; GB/T 2575; GB/T 3854; GB/T 8237; GB/T 18369; GB/T 18370; GB/T 21238; GB 50015
Drafting Organization Henan Yi Jia Environmental Ltd
Administrative Organization Ministry of Housing and Urban Water Supply and Drainage Construction Standardization Technical Committee
Regulation (derived from) Bulletin of the Ministry of Housing and Urban 1521; industry standard filing Notice 2012 No. 12 (No. 156 overall)
Summary This standard specifies the fiberglass septic tanks (hereinafter referred to as " septic tank ") of raw materials, models and structure, requirements, test methods, inspection rules, marking, packaging, transport and storage. This standard applies to glas