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Superseded by:	GB/T 21447-2018 Specifications for steel pipeline external corrosion control
Superseded on:	2018-9-1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):	250.00
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