Regarding the scope of application of GB/T 14383-2008 Forged Socket Weld and Threaded Fittings
Thread Content
Why are elbow fittings often used in place of tees for many industrial pipes with a diameter of ≤DN50, and why is the standard GB/T 14383-2008 for forged socket-welded and threaded pipe fittings rarely used? It seems that both residential heating pipes and gas pipes use this standard?
How to connect elbow pipes with other connections? Is it butt welding or socket welding? Socket elbow fittings are more expensive than bending the pipe directly. .
Elbows have less resistance than bends; furthermore, they can be bent cold or hot, which reduces the number of welds compared to elbows.
Both ends of the elbow need to be welded, and the number of welds is the same as that of the elbow
Welding is required, but for the bent pipe, the welds that connect the elbow to the straight pipe sections on both sides have been removed. Think about it: a elbow, with 500 mm of straight pipe attached to each end, and then diameter flanges are welded on, resulting in 4 welds ； If I use elbow pipes, I will leave 500 mm on each of the straight sections on both sides, with 2 welds.