8.8 Scope of application for bolts
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Dear experts, what is the range of applications for 8.8 bolts? Under what circumstances are special bolts such as 30CrMoA used? What type of bolts are suitable for low-temperature pipelines (-20°C, -50°C) and high-temperature pipelines (200°C, 500°C)?
Hex head bolts of grade 8.8 are primarily used in applications involving non-toxic, non-flammable media and in situations without severe cyclic loading, in conjunction with non-metallic gaskets； Others, see p-466 for details
Reply to 1# feibiao101: 30CrMoA is clearly a high-chromium material, designed for use in high-temperature environments