pvc是分级的吗？
APVC1.5
BPVC1.6
CPVC1.6
PVC
There must be different grades of PVC. The PVC sheet is extruded and non-foamed. The quality grades are Grade A, Grade B and Grade C.
Grade A PVC sheet with a specific gravity of 1.5, new material
The specific gravity of Grade B PVC sheet is 1.6, and the new material is added with appropriate amount of filler.
Grade C PVC sheet has a specific gravity of 1.6, which is high-quality recycled material.
The natural color of polyvinyl chloride (PVC) is yellowish translucent and shiny. The transparency is better than polyethylene and polypropylene, but worse than polystyrene. It can be divided into soft and hard polyvinyl chloride according to the amount of additives. The soft products are soft and tough, and feel sticky. The hardness of hard products is higher than that of low density polyethylene, but lower than that of polypropylene. Whitening will occur at the bend.
PVC
Common PVC products: plates, pipes, soles, toys, doors and windows, wire skins, stationery, etc. It is a polymer material that uses a chlorine atom to replace a hydrogen atom in polyethylene.
