Welding method for liquid ammonia pipelines, wire material
Thread Content
I would like to ask fellow sailors: what about liquid ammonia pipelines (operating pressure of 1.8 Mpa, at around 35°C)? For 20# carbon steel pipes, what welding method should be used, and what grade of welding wire is appropriate?
The welding wire is H08Mn2SiA, and the welding rod is J422.
Tungsten inert gas welding wire. For ER49, ER50 electrodes and J427, pickled electrodes are generally not used, as their impact strength is much lower.
How are flanges used, and how are flanges connected to pipes? Flange connections have a higher leakage probability than welded connections.
Our factory uses conventional arc welding with J422 electrodes.
The most common and basic type of welding, carbon steel butt welding or fusion welding – something that any ordinary welder can handle