These values have mean of 17 and standard deviation of about 4.1. If instead we first calculate the range of our data as 25 â 12 = 13, and then divide this number by four we have our estimate of the standard deviation as 13/4 = 3.25.
Thermoset plastics are types of plastics that retain the shapes that they are molded into. In other words, these are hard plastics. They are very durable and most of the time can be used and reused many times. These are the types of plastics that are used in aircraft parts, tires, and many others. The other half of the main types of plastics is thermoplastic.
Types of Flexible Plastic Tubing. Although we consider all of our plastic tubes to be flexible (more flexible than pipe), flexibility can be subjective. Polyurethane and PVC are the most flexible plastic tubing we produce.Polyurethane is also very abuse resistant and can withstand higher pressures when compared to PVC.We offer 4 different durometers (hardness) of Polyurethane exhibiting different characteristics.lastic Tubing & Flexible Tubing Products. Freelin-Wade_Catalog.pdf. This website describes in-stock plastic tubing, flexible tubing, hoses, pneumatic tubing, and accessories which can be ordered direct and ships the next day.