OULIN SCREW is a experienced screw and barrel manufacturer in China, company was established at 2009, we are young and developing group. our screw and barrel can be used in injection molding machine, single screw extruder, counter rotating double screw extruder, co-rotating double screw extruder, planetary screw extruder, rubber extruder and etc. OULIN SCREW is located in ZHOUSHAN city, near NINGBO& SHANGHAI city, it is a island city which is famous for its deep-water port, the convenient sea transportation allows the shipment timely. ZHOUSHAN is the capital city of screw and barrel in China also, there are complete industrial& supply chains, experienced engineers& workers, take advantage of these, advanced design and production technology can be used in our products. OULIN SCREW has a more than 6000factory, the factory is equipped with all necessary production machines, like CNC turning machines, CNC milling machines, CNC PTA alloy welding machines, grinding machines, drilling machines and others; rolled nitrating alloy steel will be used in production, after 144 hours nitriding, the finished products will have good torque, abrasive and corrosive resistance; according to different working requirement, different quality grade can be chosen, from nitriding quality to top bimetallic quality. How can we guarantee our quality& after-sales service? Firstly, a production plan will be made for every order to guarantee orders will be finished in time; secondly, after every production step, all related dimensions will be checked to guarantee the right dimensions; thirdly, we will check appearance, tolerance, hardness before shipment. About after-sales service, company has a experienced engineering team, they can install, adjust, map screw and barrel, and if our goods has big quality defect, we will remake one without any cost. Chinese market is our main market, company started to export screw barrel as OEM factory at 2012, now we have some regular customers in Taiwan, India, Spain, Chile, Italy, Iran, Slovenia and etc. OULIN SCREW will take every order seriously and guarantee the quality, with customers support, we believe one day OULIN SCREW will be reliable brand in the world.