Kusiyana kwakasiyana-siyana uye mienzaniso yePVC twin-screw extruder inogona kuburitsa mapaipi emadhayamita akasiyana uye akasiyana madziro ukobvu. Yakanyatsogadzirwa screw chimiro neunifomu plasticization uye yakakwira kubuda. Extrusion molds dzakagadzirwa nemhando yepamusoro alloy simbi, yemukati inoyerera chiteshi chrome plating, kukwenenzverwa kurapwa, kupfeka uye kusaita ngura; ine yakatsaurirwa yakakwirira-kumhanya saizi sleeve, pombi yepamusoro mhando yakanaka. Iyo yakakosha yekucheka yePVC pombi inotora chinotenderera chinonamatira mudziyo, icho chisingade kutsiva chigadziriso nemadhayamita epombi akasiyana. Nechamfering mudziyo, kucheka, chamfering, imwe-nhanho kuumba. Tsigira sarudzo yepamhepo yekubhejera muchina.