May I ask what material gas pipes are generally made of?
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A relatively novice question, please give me some advice from an expert on what material is generally used for coke oven gas delivery pipes?
Water and gas pipes GB3091 and GB3092 use Q195~Q235, and the seamless ones can be made of GB/T 8163 20 steel.
Thank you. We plan to use seamless one.
We all use Q235B, but the acceptance level is higher.
Water and gas steel pipes of DN150 and below are suitable. For above, straight seam or spiral seam steel pipes are sufficient. Seamless pipes are too expensive.
According to the gas design manual and coking design reference materials, when our institute does coking design, seamless steel pipes are used for gas pipelines below DN200, and welded steel pipes are used for gas pipes above DN200. The material is Q235 steel.