GB/T 34903.1-2017 Petroleum,petrochemical and natural gas industries—Non-metallic materials in contact with media related to oil and gas production—Part 1:Thermoplastics (English Version)
2017GB/T 34903.1-2017 Petroleum,petrochemical and natural gas industries—Non-metallic materials in contact with media related to oil and gas production—Part 1:Thermoplastics