1. Pipe fittings used for connecting pipes include: flanges, swivels, clamps, collars, sleeve nuts, and worm gears, etc.

2. Pipe fittings for changing direction: elbows, bends

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

4. Increase pipeline branch fittings: Tees, Crosses

5. Pipeline sealing fittings: gaskets, plumber's tape, sisal rope, blind flanges, pipe caps, closures, and welding plug caps

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