GB/T 20972.2-2008
石油天然气工业.油气开采中用于含硫化氢环境的材料.第2部分:抗开裂碳钢、低合金钢和铸铁
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
GBT20972.2-2008, GB20972.2-2008