... 2)HPb58-3 or HPb59-1 DescriptionCompression fitting/PEX fittingsBrass compression fittings are composed of brass body, brass o-ring ... , shot blasting, fine finishing, assemblying, testing and packing.Brass compression fittings include thress series — Straights, Elbows and Tees. They ... cool water supply system and civil heating system. Brass compression fittings have 3 types according to the color of ...