GB/T 27866-2023 Technical specification for hardness control of steel pipes and equipment to prevent sulfide stress cracking of welds (English Version)
2023GB/T 27866-2023 Technical specification for hardness control of steel pipes and equipment to prevent sulfide stress cracking of welds
2011GB/T 27866-2011 Specification of controlling weld hardness of carbon steel and low alloy steel piping and equipment to prevent sulfide stress cracking