GB/T 20972.2-2025 Active
GB/T 20972.2-2025 Petroleum and natural gas industries—Materials for use in H2S-containing environments in oil and gas production—Part 2:Cracking-resistant carbon and low alloy steels,and the use of cast irons
Abstract
This document specifies the selection, evaluation, and use requirements for carbon steel and low-alloy steel materials in environments containing hydrogen sulfide (H2S) in oil and gas extraction and natural gas processing plants, as well as the use requirements for cast iron.
This document applies to the selection, evaluation, and use of crack-resistant materials for equipment designed and manufactured according to the load-control design method.
Note: Cracking includes sulfide stress cracking (SSC), stress-oriented hydrogen-induced cracking (SOHIC), soft zone cracking (SZC), hydrogen-induced cracking (HIC), and stepwise cracking (SWC). It does not include material loss caused by uniform corrosion, localized corrosion, or fatigue corrosion.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 20972.2-2025 |
| CCS | Oil exploration, development, and transportation |
| ICS | Comprehensive equipment for the oil and gas industry |
| Implement Date | 2025-08-01 |