what does K stand for in K( , K 12 and K 14 pipes and fittings
PIPE-VALVES-FITTINGS (PVF) Basically the industry that sells pipes and fittings to other industries who use them
BIP is Black Iron Pipe.
Anodized (ie electro-plated) chances are they are chrome or brass plated.
Worught Pipe Bend
Maybe: Wrought Austenitic Stainless Steel Piping Fittings
WP is used in front of the grades for pipe fittings after the production standard. Like ASTM A403 WP304L. TP is used in front of the grades for pipes (not fittings) after the production standard. Like ASTM A312 TP304L.
AN stands for Army Navy. The AN fittings have a 37 degree conical end which is what makes the seal.
Pex fittings are used for making connections in PEX plumbing applications. Professiomnal plubmers used next type of PEX fittings: Crimp fittings, Clamp fittings, Push Up fittings, Sharkbite fittings and others.
Compressing fittings, press fittings, and push-on fittings.
Question is other way round FPT not FTP Female Pipe Thread FPT fittings are equivalent to "National Pipe Thread" (NPT) ones, but different from National Standard Free-Fitting Straight Mechanical Pipe Thread (NPSM) fittings.
Return fittings