Help you easily identify castor quality
Industrial caster style is numerous, product quality is uneven, the price difference is big. The big world casters take you to burn, according to the fire, smell and ash to identify the wheel material.
The following is the combustion characteristics of commonly used castor materials:
Polyurethane (PU) : easy to burn, light white smoke when burning, easy to melt, no irritating odor, sticky silk.
Polyvinyl chloride (PVC) : easy to burn, when burning thick black smoke, a stimulating smell, combustion non-sticky filamentous, burning surface is black toner.
Polypropylene (PP) : easy to burn, with a faint plastic smell, the surface of the burning uniform melting, and sticky silk. Nylon (PA) : not easy to burn, when burning hair scorched smell, after burning the surface of the bubble, and sticky silk.
Phenolic resin (PH) : burning condition as PA material, but after burning surface with white powder.
Many small factories without research and development capabilities will choose to imitate the color and appearance of some brand products, use recycled materials and some fake materials as shoddy goods, mixed with fish eye beads, and then sell them at very low prices, disrupting the market and endangering the rights and interests of consumers. Big world castor tips, a price of a minute goods, do not be penny wise and pound foolish.