... nut 2)HPb58-3 or HPb59-1 DescriptionCompression fitting/PEX fittingsBrass compression fittings are composed of brass body, brass o ... , developed five series of copper pipeline series products, namely, copper valves, copper pipe fittings, copper pipes, plastic-covered copper pipes, stainless steel pipes ... providing high quality, complete series, and best services" . Compression fitting, Equal Straight