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Database: 189760 (18 Oct 2025)
SY/T 0420-1997 English PDF
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SY/T 0420-1997
: Technology standard of petroleum asphalt coating for buried steel pipeline
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SY/T 0420-1997
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Technology standard of petroleum asphalt coating for buried steel pipeline
SY/T 0420-1997
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Basic data
Standard ID
SY/T 0420-1997 (SY/T0420-1997)
Description (Translated English)
Technology standard of petroleum asphalt coating for buried steel pipeline
Sector / Industry
Oil & Gas Industry Standard (Recommended)
Classification of Chinese Standard
P94
Classification of International Standard
23.040.10; 75.140; 25.220
Word Count Estimation
32,363
Date of Issue
12/28/1997
Date of Implementation
6/1/1998
Older Standard (superseded by this standard)
SYJ 4020-1988; SYJ 8-1984
Quoted Standard
TJ 36; GB 7692; GB 7693; GBJ 235; GB 494; GB/T 4509-1094; GB/T 4508-1984; GB/T 4507-1984; GB/T 11148-1989; GB/T 267-1988; GB/T 260-1977; JC 176-1980; GB/T 1040-1992; GB/T 8923; SY 0063
Regulation (derived from)
China National Petroleum Corporation documents [97] China-Oil-Tech-Supervision No. 698
Summary
This standard applies to the transmission medium temperature does not exceed 80 �� buried steel pipeline designed outer coating of asphalt, prefabricated construction and acceptance. Asphalt external corrosion pipe should be laid in the water or marsh and reed zone.