The extruders drived by D. C motor with a thyristor to stepless regulate. It also equiped with the over-load prtection and stoppage alsrmingsystem. The screws core and the out- side of barrels are
cooled by the circulation of oil, ther fuctions include vacuum venting and forced feeding.
can directly convert thermoplastic expecialy RPVC powder into Pipe, plate sheet, film and profile, and also Provide function of