Identify bluing play clad steel with good or bad

Bluing baotou steel belt quality stand or fall, to see whether the bluing clad steel with polypropylene high purity is not high, the current market of bluing clad steel belt point play quite a variety: have a pure polypropylene, polypropylene masterbatch and polypropylene plus reworked material, polypropylene and reworked material and masterbatch. Pure polypropylene production of bluing clad steel with a state of full transparency, polypropylene and masterbatch production of packaging for the translucent, polypropylene add reworked material production of bluing for baotou steel belt largely opaque, polypropylene masterbatch and reworked material production of bluing clad steel belt completely opaque. There is a whole reworked material and calcium carbonate powder sandwich material in the production of bluing clad steel belt, completely reworked material production bluing clad steel with soft, sandwich material strap only surface is raw materials, the rest are calcium carbonate powder ( Lime powder) 。 Bluing dozen steel belt quality depends entirely on the purity of polypropylene, polypropylene, the higher the purity of bluing of baotou steel belt tension, the better.