The commonly used series of PP pipes and fittings mainly include the following types:

PP-R pipes and fittings series

Specifications: The specifications of PP-R pipes are represented by the pipe series S, nominal outer diameter dn × nominal wall thickness en. Common pipe series include S5, S4, S3.2, S2.5, S2, corresponding to nominal pressures of 1.25 MPa, 1.6 MPa, 2.0 MPa, 2.5 MPa, and 3.2 MPa respectively. The commonly used pipe diameters in home decoration are 20mm and 25mm, commonly referred to as 4-point pipe and 6-point pipe.

Features and applications: It has good impact resistance and long-term creep performance, moderate price, stable performance, heat insulation, corrosion resistance, smooth inner wall without scaling, safe and reliable pipeline system, non-permeable, with a service life of up to 50 years. It is widely used in hot and cold water systems, heating systems, pure water supply systems, central air conditioning systems, and industrial pipeline systems for transporting or discharging chemical media in buildings.

Fiberglass reinforced polypropylene (FRPP) pipes and fittings series

Specifications: The outer diameter ranges from tens of millimeters to hundreds of millimeters, such as common DN50, DN80, DN100, etc. There are also various wall thickness specifications to choose from, generally determined according to different pressure levels and usage requirements. For example, when the nominal pressure is at different levels such as 0.6MPa, 1.0MPa, the wall thickness will change accordingly.

Features and applications: High mechanical strength, strong corrosion resistance, smooth surface, simple structure, small size, long service life compared to similar products, large exhaust volume, and high vacuum. Mainly used in processes such as vacuum absorption, vacuum filtration, vacuum crystallization, vacuum concentration, vacuum drying, vacuum transportation, vacuum deoxygenation, and vacuum aeration, commonly used in vacuum systems in the chemical, pharmaceutical, and food industries, as well as in the transportation of corrosive media.

Polypropylene (PP) drainage pipes and fittings series

Specifications: Common outer diameter specifications include 50mm, 75mm, 110mm, 160mm, etc. The wall thickness varies based on the diameter of the pipe and usage requirements, generally around 2mm-5mm.

Features and applications: It has advantages such as lightweight, corrosion resistance, low water flow resistance, and easy installation. It is widely used in drainage systems inside and outside buildings, such as drainage pipes in bathrooms, kitchens, balconies, and rainwater discharge systems.

Food-grade PP pipes and fittings series

Specifications: The nominal outer diameter generally ranges from 20mm to 1000mm, with wall thickness between 2mm and 40mm, and lengths typically of 5m or 6m, etc. Different pipe diameters and wall thicknesses can be customized according to specific food processing and transportation requirements.

Features and applications: Non-toxic and tasteless, in compliance with food hygiene and safety standards, with good corrosion resistance and chemical stability, able to meet the hygiene requirements of pipeline systems in the food, beverage, and pharmaceutical industries, used for transporting various food raw materials, semi-finished products, finished products, and drinking water.

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