PP-H Rod

PP-H Rod, also known as Polypropylene Homopolymer Rod, is a solid engineering plastic rod made from polypropylene homopolymer material. PP-H is widely used for machining industrial plastic parts because it offers a practical combination of light weight, chemical resistance, low moisture absorption and good fabrication performance. Compared with many traditional materials, PP-H Rod is easier to machine, does not rust and performs well in many chemical and humid environments.

PP-H Rod is commonly used as a raw material for turning, milling, drilling and CNC machining. It can be processed into bushings, sleeves, rollers, spacers, flanges, washers, support parts, insulating components, chemical equipment accessories and many other custom plastic parts. Because polypropylene homopolymer has relatively good rigidity and welding performance, it is often selected for industrial processing applications where chemical resistance and lightweight construction are important.

PP-H Rod Features

• Made from polypropylene homopolymer material
• Lightweight and easy to machine
• Good resistance to many acids, alkalis and chemical solutions
• Low moisture absorption and suitable for humid environments
• Good rigidity for general industrial applications
• Suitable for turning, drilling, milling and CNC machining
• Can be used to produce custom industrial plastic parts
• Does not rust like metal materials
• Available in multiple diameters and cut lengths

Compared with some other thermoplastics, PP-H Rod is valued for its balance of processing performance and cost-effectiveness. It is often chosen for applications that do not require extremely high impact strength but do require good corrosion resistance, simple machining and practical mechanical performance. For low-temperature impact applications or special performance requirements, the specific material grade should still be confirmed before use.

PP-H Rod Reference Sizes

Based on the supplied image, the reference diameter range for PP-H Rod is approximately 15 mm to 250 mm, and the common reference rod length shown is 1 meter. The following diameter options are shown in the image as reference specifications:

• 15 mm × 1 m
• 20 mm × 1 m
• 25 mm × 1 m
• 30 mm × 1 m
• 35 mm × 1 m
• 40 mm × 1 m
• 45 mm × 1 m
• 50 mm × 1 m
• 55 mm × 1 m
• 60 mm × 1 m
• 65 mm × 1 m
• 70 mm × 1 m
• 75 mm × 1 m
• 80 mm × 1 m
• 85 mm × 1 m
• 90 mm × 1 m
• 95 mm × 1 m
• 100 mm × 1 m
• 110 mm × 1 m
• 120 mm × 1 m
• 130 mm × 1 m
• 140 mm × 1 m
• 150 mm × 1 m
• 160 mm × 1 m
• 170 mm × 1 m
• 180 mm × 1 m
• 200 mm × 1 m
• 220 mm × 1 m
• 230 mm × 1 m
• 250 mm × 1 m

The image also suggests that some sizes above 150 mm may be supplied according to production conditions or custom requirements. These dimensions should be treated as reference production sizes rather than guaranteed stock specifications for every order. Final availability should be confirmed according to diameter, colour, quantity, required tolerance and delivery schedule.

Applications of PP-H Rod

PP-H Rod is suitable for machining custom components used in chemical equipment, water-treatment systems, environmental protection equipment, food-related auxiliary equipment, laboratory devices and general industrial machinery. Typical machined parts may include:

• Bushings and sleeves
• Spacers and washers
• Flanges and sealing support parts
• Rollers and guide parts
• Valve-related plastic components
• Pump and tank accessories
• Insulating and support parts
• Custom turned and milled plastic parts

Because polypropylene homopolymer has good resistance to many chemical media, PP-H Rod is often selected for parts used around acids, alkalis, cleaning solutions and humid working environments. However, the actual suitability should still be evaluated according to the medium, concentration, operating temperature, pressure and mechanical load.

PP-H Rod Processing

PP-H Rod can be processed by turning, drilling, boring, milling, slotting, grooving and CNC machining. It is commonly used as a machining blank for making non-standard parts according to customer drawings or samples. During machining, the required diameter tolerance, concentricity, surface finish and installation structure should be clearly indicated on the drawing.

Since polypropylene has a lower stiffness than metal and may show thermal expansion under temperature change, proper allowance should be considered during design and machining. For larger-diameter rods and precision parts, final tolerances should be confirmed before production.

PP-H Rod Material Notes

The supplied image mainly shows grey rod options, but the dimensions can be used as reference specifications for PP-H Rod. Colour may vary according to material formulation and production batch. The colour itself does not prove that the material is food grade, flame retardant, anti-static or UV resistant. If special performance is required, the corresponding material grade and technical documentation should be confirmed separately.

For related polypropylene material information, you may also visit our internal page:
Polypropylene PP Sheet.

For general material information, please refer to the Wikipedia explanation of
Polypropylene.