蜜桃传媒

Definition

Pipe fittings are a general term for parts that play the role of connection, control, direction change, diversion, sealing, support, etc. in pipeline systems.

Introduction to pipe fittings

All steel pipe fittings are pressure-bearing pipe fittings. According to different processing techniques, they are divided into four categories, namely butt-welded pipe fittings (with and without welds), socket welding and threaded pipe fittings, and flange pipe fittings.

Common classification

There are many types of pipe fittings, which are classified here according to purpose, connection, material, and processing method.

According to the purpose :

1. Pipe fittings used to connect pipes to each other include: flanges, unions, pipe clamps, clamps, ferrules, throat clamps, etc.

2. Pipe fittings that change the direction of the pipe: elbows, elbows

3. Pipe fittings that change the diameter of the pipe: reducers (reducing pipes), reducing elbows, branch platforms, reinforcement pipes

4. Pipe fittings that increase pipeline branches: tees, crosses

5. Pipe fittings used for pipeline sealing: gaskets, raw tape, hemp, flange blind plates, pipe plugs, Blind plate, head, welding plug

6. Pipe fittings for pipeline fixing: clamps, towing hooks, lifting rings, brackets, brackets, pipe clamps, etc.

By connection锛�

1. Welded pipe fittings

2. Threaded pipe fittings

3. Socket pipe fittings

4. Clamp pipe fittings

5. Socket pipe fittings

6. Adhesive pipe fittings

7. Hot melt pipe fittings

8. Curved elastic double melt pipe fittings

9. Rubber ring connection pipe fittings

By material锛�

1. Cast steel pipe fittings: ASTM/ASME A234 WPB, WPC

2. Cast iron pipe fittings

3. Stainless steel pipe 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 steel: 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 argon 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 pipe 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 division锛�

Can be divided into push, press, forge, casting, etc.

Manufacturing standard division锛�

Can be divided into national standard, electrical standard, ship standard, chemical standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc.

Its curvature radius can be divided锛�

It 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 outer diameter of the pipe, that is, R=1.5D; short radius elbow means that its radius of curvature is equal to the outer diameter of the pipe, that is, R=1.0D. (D is the diameter of the elbow, and R is the radius of curvature).

If divided by pressure level:

There are about seventeen types, which are the same as the pipe standards in the United States, including: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS; among which STD and XS are the most commonly used.