What material should be used for liquid ammonia pipelines?
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Recently, the client has requested that Q345B 8163 steel pipes be used for the liquid ammonia pipelines. Is this acceptable? -A usage environment of 35 degrees? It is uncertain whether it will reach the standards of steel; its performance cannot be guaranteed. Fracture.
Yes, because it is liquid ammonia; there is no water, so there are no OH- ions, and thus no corrosion.
Ordinary carbon steel or stainless steel will do; Q345B is also acceptable, I think it’s specified in the design standards for spherical tanks
It’s best to follow standard specifications when doing design work. For 8163, are you sure that these standards are suitable for this toxic and harmful medium? ? Check 6479 again; many aspects related to low-temperature impact testing cannot be determined based on experience. Once an issue occurs, design flaws will be identified.
The main concern is whether this low temperature will make the pipes brittle and cause them to break
Do you mean to use the 16mn 6479 standard?