1. Pipe fittings for connecting pipes include: flanges, unions, clamps, bands, sleeves, and collars, etc.

2. Fitting for changing pipe direction: Elbows,弯管

3. Fittings for changing pipe diameter: Reducing ( reducers), Reducing Elbows, Branch Tee, Reinforcing Pipe

4. Pipe fittings for increased branching: Tees, Four-Ways

5. Pipeline sealing fittings: gaskets, plumber's tape, sisal rope, flanged blind plate, pipe plug, blind flange, cap, and welding plug

6. Pipeline fixing fittings: clamps, hooks, rings, brackets, supports, pipe clips, etc.