Pipe fittings are the parts of the piping system that play a role in connection, control, direction change, diversion, sealing, support and other functions. There are many types of pipe fittings, which are categorized here according to purpose, connection, material, and processing method.
- According to the use of points
1. for the pipe connected to each other fittings: flanges, live, pipe hoops, clamp hoops, ferrules, throat hoops, etc.
2. change the direction of the pipe fittings: elbows, bends
3. change the pipe diameter of the pipe fittings: reducer (reducer), reducer elbow, branch pipe table, reinforcing pipe
4. increase the pipeline branch fittings: tee, cross
5. Pipe fittings used for pipe sealing: gasket, raw material tape, line hemp, flange blind, pipe plugs, blind, head, welded plugs
6. Fittings for pipe fixing: rings, tow hooks, rings, brackets, brackets, pipe cards, etc.
- According to the connection points
1、Welded fittings
2、Threaded fittings
3、Tubing fittings
4、Clamping fittings
5、Socket fittings
6、Bonded fittings
7、Hot melt fittings
8, Curved bullet double fusion fittings
9、Glue ring connecting fittings
- According to the material points
1, cast steel fittings: ASTM/ASME A234 WPB, WPC
2、Cast iron pipe fittings
3, stainless steel fittings: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
astm/asme a403 wp 321-321h astm/asme a403 wp 347-347h
Low Temperature Steels: ASTM/ASME A402 WPL3-WPL 6
High Performance Steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70
Cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon-chrome asphalt, PVC, PPR, RFPP (reinforced polypropylene), etc.
4、Plastic pipe fittings
5、PVC pipe fittings
6 、Rubber pipe fittings
7、Graphite pipe fittings
8、Forged steel fittings
9、PPR pipe fittings
10, alloy pipe fittings: ASTM / ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP911, 15Mo3 15CrMoV, 35CrMoV
11、PE pipe fittings
12、ABS pipe fittings
- Production method
Can be divided into pushing, pressing, forging, casting and so on.
- Manufacturing standards
Can be divided into national standard, electric standard, ship standard, chemical standard, water standard, American standard, German standard, Japanese standard, Russian standard and so on.
Its radius of curvature to points
Can be divided into long radius elbow and short radius elbow. Long radius elbow means that its radius of curvature is equal to 1.5 times the outside diameter of the pipe, that is, R = 1.5D; short radius elbow means that its radius of curvature is equal to the outside diameter of the pipe, that is, R = 1.0D. (D is the diameter of the elbow, R is the radius of curvature). 5. If the pressure level to points: there are about seventeen, and the U.S. pipe standard is the same, there are: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160 XXS; of which the two most commonly used are STD and XS.
