Plastic pipe fittings play a key role in modern piping systems, especially in the fields of construction, industry, agriculture and home, and are widely popular for their advantages such as lightness, corrosion resistance and low cost. 22mm plastic pipe fittings are small and medium-sized fittings suitable for a variety of scenarios such as water supply, drainage, and cable protection. This article will systematically introduce the classification, material characteristics, production process and market purchase recommendations of 22mm plastic pipe fittings.
Common types of 22mm plastic pipe fittings
1. Classification by function
Pipe cap/pipe plug: used to close the end of the pipe to prevent foreign objects from entering or protect the pipe mouth. The material is mostly HDPE (high-density polyethylene) or PVC, with a barb design to enhance fixation.
Elbows and tees: used to change the direction of the pipe or divert the flow. The common angles are 45° and 90°. The production process includes injection molding or hot push molding.
Pipe clamps/fixing parts: such as 22mm PVC pipe clamps, used to fix pipelines, mostly made of PE or PVC, suitable for indoor and outdoor wiring.
2. Classification by connection method
Socket connection: fixed by gluing or hot melting, mostly used for PVC pipe fittings.
Threaded connection: some pipe plugs are designed with threads for easy installation and removal.
Flange connection: suitable for high-pressure scenarios, such as industrial piping systems.
Material characteristics and advantages
1. Common materials
PVC (polyvinyl chloride): low cost, acid and alkali resistance, but easy to become brittle at low temperatures, suitable for drainage systems.
HDPE (high-density polyethylene): high strength, suitable for pressure pipes, such as water supply systems.
2. Core advantages
Corrosion resistance: not corroded by acid, alkali, and salt, and the service life can reach more than 10 years.
Lightweight and easy to install: the weight is only 1/5 of that of metal pipes, reducing transportation and construction costs.
Environmental protection and safety: in line with ROHS standards, non-toxic and harmless, can be used in drinking water systems.
Production process and technology
1. Injection molding
Suitable for small pipe fittings (such as pipe plugs and pipe caps), the molten plastic is injected into the mold by an injection molding machine, with high precision and high efficiency.
2. Extrusion and hot push molding
Straight pipes and elbows: the raw materials are heated by an extruder, and the mold is cooled and cut after being shaped. Elbows require hot push technology, using a core rod to expand the diameter and bend.
Application scenarios
1. Building water supply and drainage
22mm PVC pipe fittings are used for indoor water pipes and floor drain connections, with a pressure resistance level of PN10-PN16.
2. Industry and agriculture
Chemical pipelines: HDPE pipe plugs protect pipe openings from corrosive media.
Irrigation system: PVC three-way diversion improves water delivery efficiency.
22mm plastic pipe fittings have become an indispensable component in pipeline engineering due to their versatility, economy and ease of use. Reasonable selection and standardized installation can maximize their performance and meet the needs of different scenarios. With the advancement of materials and processes, their application range will be further expanded.
