Standard No.:	GB/T 21447-2008
English Name:	Specification for external corrosion control for steel pipeline
Chinese Name:	钢质管道外腐蚀控制规范
Chinese Classification:	E98    Oil and gas gathering and transportation equipment
Professional Classification:	GB    National Standard
Issued by:	AQSIQ；SAC
Issued on:	2008-2-13
Implemented on:	2008-8-1
Status:	abolished
Superseded by:	GB/T 21447-2018 Specifications for steel pipeline external corrosion control
Superseded on:	2018-9-1
Abolished on:	2018-09-01
Language:	English
File Format:	PDF
Word Count:	10000 words
Price(USD):	250.0
Delivery:	via email in 1 business day

This standard specifies the minimum requirement of projectdesign, construction, management of external corrosion control for steel pipeline (hereinafter referred to as pipeline) . Economical and rational corrosion control solutions shall be determined by optimized designs based on active adoption of new process, material, structure and technology, and endeavored absorption of domestic and international recent scientific and technological achievements. This standard is applicable to external corrosion control for onshore newly-built, extended and rebuilt pipelines, which transmits oil, gas or water under 100℃. Pipelines transmitting other meida or oil, gas or water higher than 100℃ may also refer to this Standard.

Foreword I 1 Scope 1 2 Normative References 1 3 Terms and Definitions 2 4 Basic Requirements 3 5 Design of Anticorroision Coating 5 6 Cathodic Protection Design 6 7 Interference Current Control 13 8 Construction and Acceptance 16 9 Operation and Maintenance Administration 19 10 Records on Corrosion Control 20 11 Health, Safety and Environment(HSE) 21 References 22

* GB/T 8923-1988
* GB/T 19292.1-2003 Corrosion of metals and alloys - Corrosivity of atmospheres - Classification
* GB/T 21246-2008
* GB/T 21448-2008 Specification of cathodic protection for underground steel pipelines
* GB/T 5017-1994
* HG/T 20679-2014
* SH 3010-2000 Specification for the insulation of equipment and pipe for petrochemical industry
* SH 3022-1999 Technical specification for the coating anticorrosion of equipment and piping in petrochemical industry
* SY/T 0017-1996
* SY/T 0029-2012 Technical Specification for Application of Buried Steel Test Pieces
* SY/T 0032-2000 Standard for AC influence drainage protection of buried steel pipeline
* SY/T 0042-2002 Calculation standard of economic appraisals for corrosion control project
* SY/T 0061-2004 Technical specification of external protective organic coating for buried steel pipeline
* SY/T 0085-2012 Standard Test Method for Outdoor Weathering Exposure of Pipeline Coatings
* SY/T 0087-1995
* SY/T 0315-1997
* SY/T 0324-2014
* SY/T 0379-2013 Standard of Coal Enamel External Protective Coating for Buried Steel Pipeline
* SY 0401-1998
* SY/T 0407-2012 Specification of Steel Surface Preparation Before Application of Paint
* SY/T 0413-
* SY/T 0414-2007 Technical standard of PE tape coating for steel pipeline
* SY/T 0415-1996 Standard of polyurethane foamed coating for buried steel pipeline
* SY/T 0413-
* SY/T 0516-2008 Technical code for insulating joint and inslating flange
* SY/T 5918-2011 Technical Criteria for External Coating Rehabilitation of Buried Steel Pipeline
* SY/T 5919-2009 Cathodic protection technology management regulations for buried steel pipeline