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Database: 189760 (1 Nov 2025)
SL/T 4-2020 English PDF
SL/T 4: Evolution and historical versions
Standard ID
Contents [version]
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Standard Title (Description)
Status
PDF
SL/T 4-2020
English
RFQ
ASK
11 days [Need to translate]
(Technical specification for farmland drainage engineering)
Valid
SL/T 4-2020
SL 4-2013
English
RFQ
ASK
13 days [Need to translate]
Technical code for farmland drainage project
Obsolete
SL 4-2013
SL/T 4-1999
English
RFQ
ASK
9 days [Need to translate]
Technical code for farmland drainage project
Obsolete
SL/T 4-1999
PDF similar to SL/T 4-2020
Standard similar to SL/T 4-2020
LY/T 3022
GB/T 2818
SL 470
SL 698
SL 510
Basic data
Standard ID
SL/T 4-2020 (SL/T4-2020)
Description (Translated English)
(Technical specification for farmland drainage engineering)
Sector / Industry
Water Resources Industry Standard (Recommended)
Classification of Chinese Standard
B91
Word Count Estimation
115,175
Date of Issue
2020-06-30
Date of Implementation
2020-09-30
Older Standard (superseded by this standard)
SL 4-2013
Regulation (derived from)
Ministry of Water Resources Announcement No. 10 of 2020
Issuing agency(ies)
Ministry of Water Resources of the People's Republic of China
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