Generally used sg-2~sg-4 (ie, XS-2 or XS-3) type, such as loose medium viscosity PVC resin. Because the loose type resin is easier to plasticizing than the compact resin, the medium viscosity resin can not only make the product maintain a good physical and mechanical properties, in the molding process, the material has good fluidity.
The soft PVC pipe adopts GB GB/t 13527. 1-92 (liquid conveying) or gb/t13527.2-92 (for wire insulation). The medical soft PVC pipe is executed GB 10010-88.