She, unlike seamless, gives less scale.

Material for the pipeline

The best option is steel pipes. Their main advantage is the low price. Better if it is a welded pipe. She, unlike seamless, gives less scale. If a pipe is more than 1 inches in a diameter, then it is easier and more reliable to use welding, however, for the simplicity of dismantling the pipeline, several threaded detachable joints should be introduced (it is better to use a galvanized pipe here). But do not forget that the tightness of threaded joints is not always at a high level.