CJ/T 245-2021 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
CJ/T 245-2021	RFQ	ASK	3 days	General technical specifications of building roof drains	Valid
CJ/T 245-2007	639	Add to Cart	3 days	Syphonic roof outlet	Obsolete

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GB/T 18920   GB/T 18921   GB/T 18919   CJJ/T 311   CJ/T 250   CJJ/T 245   

Basic data

Standard ID: CJ/T 245-2021 (CJ/T245-2021)
Description (Translated English): General technical specifications of building roof drains
Sector / Industry: Urban Construction Industry Standard (Recommended)
Classification of Chinese Standard: P40
Classification of International Standard: 91.140
Date of Issue: 2021-12-23
Date of Implementation: 2022-03-01
Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China
Summary: This standard specifies the classification and marking of rainwater buckets for building roof drainage, general requirements, requirements, test methods, inspection rules, marking, packaging, transportation and storage. This standard applies to rainwater buckets in roof rainwater drainage systems of industrial and civil buildings.

CJ/T 245-2007: Syphonic roof outlet

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 91.140 P40 People's Republic of China town construction industry standards Siphon rain bucket 2007-01-16 release 2007-08-01 Implementation Issued by the Ministry of Construction of the People's Republic of China

Foreword

This standard is developed for the first time. This standard is widely absorbed at home and abroad on the product technical standards and manufacturing processes, some of the products at home and abroad were measured hydraulic characteristics Test, and carried out after the project validation. Appendix B, Appendix C, Appendix D of this Standard is a normative appendix, Appendix A, Appendix E is an informative appendix. This standard is proposed by the Standard Quota Research Institute of the Ministry of Construction of the People's Republic of China. This standard by the People's Republic of China Ministry of Construction Water Supply and Drainage Products Standardization Technical Committee. This standard is responsible for drafting units. Beijing Taining Branch Year Technology Co., Ltd. This standard participates in the drafting unit. Beijing Institute of Architectural Engineering, China Architectural Design and Research Institute. The main drafters of this standard. Sun Ying, Wang Wenhai, Wu Junqi, Zhao Shiming, Ruan Peiyan, Yu Xuesong. Siphon rain bucket

1 Scope

This standard specifies the classification and labeling of siphon bucket products, requirements, test methods, inspection rules and signs, packaging, storage and transportation. This standard applies to siphon rain water bucket for industrial and civil construction siphon roof rainwater drainage systems.

2 normative reference documents

The terms of the following documents are incorporated by reference in this standard and are the terms of this standard. Any reference to the date of the document, (Excluding corrigenda) or revisions do not apply to this standard, however, encourage the parties to reach an agreement under this standard Whether the latest version of these files can be used, and the most recent version of the referenced document, which is not dated, applies to this standard. Methods for chemical analysis of iron, steel and alloy GB/T Test method for room temperature tensile testing of metallic materials GB/T GB/T 1173 cast aluminum alloy GB/T 1176 Technical conditions for cast copper alloys GB/T 2100 General purpose corrosion resistant steel castings GB/T 2828.1 Sampling inspection procedures Part 1. Batch inspection sampling plan for retrieval by quality limit (AQL) GB/T 3091 welded steel tubes for low pressure fluid delivery GB/T 3098.1 Fasteners - Mechanical properties - Bolts, screws and studs GB/T 3280 stainless steel cold rolled steel sheet and strip GB/T 3420 gray cast iron pipe fittings GB 4237 stainless steel hot rolled steel sheet and strip GB/T 9438 aluminum alloy castings GB 9439 gray cast iron pieces GB/T 12716 60 ° sealing pipe thread GB/T 12771 Stainless steel welded pipe for fluid delivery GB/T 12772 Flexible interface for cast iron cast iron pipes and fittings GB/T 13663 Polyethylene (PE) pipes for water supply GB/T 13819 copper alloy castings Stainless steel seamless steel tubes for fluid delivery GB/T 14976 HG/T 3091-2000 Specification for interface seals for rubber seals, for drains and sewers CAG - type cast iron pipes and fittings for building drainage Chemical analysis of HB5220 superalloy HB6731 aluminum alloy atomic absorption spectrometric method

3 terms and definitions

The following terms and definitions apply to this standard. 3.1 With the role of gas or anti-eddy current, when the water level before the bucket reaches the design of water depth, the system formed a full flow and produce negative pressure. Pressure rain water bucket or pressure pressure rain bucket. ......

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