GB/T 20972.2-2008
Petroleum and natural gas industries.Materials for use in HS-containing environments in oil and gas production.Part 2:Cracking-resistant carbon and low alloy steels,and the use of cast irons (English Version)

Standard No.

GB/T 20972.2-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 20972.2-2008

Scope

NOTE: Carbon steels, low alloy steels, and cast irons selected in accordance with this standard are resistant to cracking in the hydrogen sulfide-containing environments specified in oil and gas production, but not necessarily in all service environments. It is the responsibility of the equipment user to select the appropriate carbon steel, low alloy steel and cast iron for the intended service environment. This part of GB/T 20972 gives the requirements and recommended practices for the selection and evaluation of carbon steel and low alloy steel for equipment in the environment containing hydrogen sulfide (HS) in oil and gas extraction and natural gas processing plants. hazard to the public, personal health and safety, or the environment. Use of this section will help avoid this costly corrosion damage. This standard is a supplement to those appropriate design codes, standards and guidelines, but does not replace their requirements for materials. This part describes the resistance of steels to damage caused by sulfide stress cracking (SSC) and the related phenomena of stress-oriented hydrogen-induced cracking (SOHIC) and soft zone cracking (SZC). This section also describes the resistance of steels to hydrogen-induced cracking (HIC) and possible development of step cracks (SWC). This standard deals only with cracking and not with loss of material due to general corrosion (loss of mass) or localized corrosion.

GB/T 20972.2-2008 Referenced Document

• API Spec 5CT Specification for Casing and Tubing*， 2023-12-01 Update
• GB 3087 Seamless steel tubes for low and medium pressure boiler*， 2008-10-24 Update
• GB 5310 Seamless steel tubes and pipes for high pressure boiler*， 2008-10-24 Update
• GB 6479 Seamless steel tubes for high-pressure chemical fertilizer equipments*， 2013-09-18 Update
• GB 6654 Steel plates for pressure vessels
• GB/T 12229 General Purpose industrial valves.Specification of carbon steel castings
• GB/T 15970.2 Corrosion of metals and alloys-Stress corrosion testing--Part 2: Preparation and use of bent-beam specimens
• GB/T 19830-2005 Petroleum and natural gas industries.Steel pipes for use as casing or tubing for wells
• GB/T 20972.1-2007 Petroleum and natural gas industries- Material for use in HS-containing environments in oil and gas production- Part 1: General principles for selection of cracking-resistant materials
• GB/T 20972.3-2008 Petroleum and natural gas industries.Material for use in HS-containing environments in oil and gas production.Part 3:Cracking-resistant CRAs(corrosion-resistant alloys)and other alloys
• GB/T 228 Metallic materials--Tensile testing at ambient temperature
• GB/T 230.1 Metallic materials.Rockwell hardness test.Part 1:Test method*， 2018-05-14 Update
• GB/T 231.1 Metallic materials—Brinell hardness test—Part 1: Test method*， 2018-05-14 Update
• GB/T 3077 Alloy structure steels*， 2015-12-10 Update
• GB/T 4157-2006 Laboratory testing of metals for resistance to specific forms of environmental cracking in HS environments
• GB/T 4340.1 Metallic materials.Vickers hardness test.Part 1:Test method*， 2009-06-25 Update
• GB/T 700 Carbon structural steels
• GB/T 710 Hot-rolled quality carbon structural steel sheets and strips*， 2008-12-06 Update
• GB/T 711 Hot-rolled quality carbon structural steel plates sheets and strips*， 2017-02-28 Update
• GB/T 8650 Evaluation of pipeline and pressure vessel steels for resistance to hydrogen-induced cracking*， 2015-12-10 Update
• GB/T 9711.3 Petroleum and natural gas industries-Steel pipe for pipelines-Technical delivery conditions-Part 3:Pipes of requirements class C
• ISO 10423 Petroleum and natural gas industries — Drilling and production equipment — Wellhead and tree equipment*， 2022-03-08 Update
• JB 4726 Carbon and low-alloy steel forgings for pressure vessels

GB/T 20972.2-2008 history

• 2008 GB/T 20972.2-2008 Petroleum and natural gas industries.Materials for use in HS-containing environments in oil and gas production.Part 2:Cracking-resistant carbon and low alloy steels,and the use of cast irons

GB/T 20972.2-2008 -All Parts