- Professional design and manufacture screw,
- barrel, tube materials production enterprises,
HENG RUI MACHINERY
ZHOUSHAN CITY, HENG RUI MACHINERY CO. LTD.
Located in the motherland of the East China Sea, located in the beautiful scenery of Zhejiang Islands, the fourth largest island - the island of Jintang the verge of Shanghai, Ningbo, Zhoushan Port, the world's leading deep-water wharf adjacent.
Zhoushan City Heng Rui Machinery Co., Ltd. is a professional Film Blowing Machine Screw Suppliers and Injection Molding Barrel Manufacturers,we are design and manufacture of screw and barrel of production enterprises, the products are mainly used for injection molding machines, chemical fiber machine, film blowing machine, extruder, rubber machine plastic machinery and equipment.
WHY CHOOSE US
We can develop and produce all kinds of products according to customer’s drawings or samples.
PORT OF SHIPMENT
We are close to Ningbo Port and Zhapu Port, so it’s convenient to deliver the products to any other country.
Our monthly production capacity is more than 300 sets, can meet different requirements from different customers.
Our products are in line with international standards and are mainly exported to Europe, the United States, Australia, Asia and Africa.
- KNOWLEDGE OF THE SCREW
STANDARD INJECTION SCREW
General injection molding machine should use standard pitch diameter screw, matched with two high and low pressure conventional screws, widely applicable to the manufacturing of general-purpose plastics and engineering plastics.
EXTENDED INJECTION SCREW
It is a universal type injection screw, which has good plasticizing capacity and compounding performance. The features: high draw ratio (20 - 25), long metering section (30%), light groove in metering section (0.04 - 0.05D), high compression ratio (0.11 - 012D).
RIGID PVC INJECTION SCREW
The features: low draw ratio, short metering section and transmission section, long compression section, deep groove in metering section, low compression ratio. It is suitable for injection moulding of rigid PVC and other plastics with poor thermal stability.