About Changjia

Zhoushan Changjia Plastic machinery Co., LTD is a

China gearbox for screw extruder manufacturers and gearbox for screw extruder factory

, company located in the middle of Jintang Island of the city of Zhoushan. Zhoushan is known for its multiple isles and the production of screw rods. To the east, it looks at Putuo Mountain, a Buddhist pilgrim resort across the sea; to the west, it is adjacent with Beilun Port of Ningbo, an international deep-water port.

Company combines scientific research development, production and business operation and business property as a whole. It is a professional producer of various types screw rods for cylinders of extruders and injection molding machines. It is also able to customize specific Extruder replacement parts according to the users' requirements and serve its users with designing of sample preparation.

This Company's products are based upon high quality steel 38CrMoALA, which is conditioned, surface nitridized (or coated with hard alloy) and polished, showing very high precision, wear resistance and long service life, therefore, used by many famous brand molding machines at home and abroad.

2000+

output

1200+

factories

27+

employees

Product List

       

You will find yourself working in a true partnership that results in an incredible experience,
and an end product that is the good.

Learn more from our FAQ

               

You will find yourself working in a true partnership that results in an incredible experience,and an end Shoe machine barrel screws that is the good.

What is the payment method?

When quoting, we will confirm with you the trading method, FOB, T/T or other ways. In mass production, we usually pay 40% advance payment, and then see the balance before shipment. Payment terms are mostly FOB. Of course...

How can the goods be delivered to customers?

Usually we ship goods by sea, because we are in Ningbo, and it is very convenient for us to export by sea. Of course, if the customer's cargo is more urgent, we can also air transport, Ningbo Airport and Shanghai Interna...

Where are your main exports?

Our products are mainly exported to Southeast Asia, Europe, South America and other countries.

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Marketing Network

Intemational Exhibition: Changjia screw sales all over the world, Japan, South Korea, the United States, Canada, France, Germany, Mexico, England, Austria, ltaly, Poland, Finland, Lebanon, Iran, Pakistan, Russia, Brazil, Argentina, Israel, Thailand, Vietnam, Malaysia Wait.

News & Event

How to choose an injection molding barrel screw? Jun 23

How to choose an injection molding barrel screw?

Here are some of the most important tips for choosing the best barrel screw. First, determine the type of material to be molded. Injection molding screws come in two main types: plastic and metal. The former is designed to convey the materi...

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What to Look For in a Blown Film Extruder Machine? Jun 16

What to Look For in a Blown Film Extruder Machine?

Bubble breathing occurs when the volume of air in the bubble changes periodically. This causes variations in the film's thickness. A solution for this problem is to increase the speed of the melt as it exits the die. Another problem is call...

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What are the advantages of blown film extruder? Jun 09

What are the advantages of blown film extruder?

A Blown Film Extruder Machine is a highly effective plastics processing machine, which consists of a series of heated and extruded cylinders. The film formed by this machine is transparent, opaque or hazy depending on the desired properties...

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How many types of parallel twin screw barrels are there? Jun 01

How many types of parallel twin screw barrels are there?

The Parallel Twin Screw Barrel has good performance, such as reasonable screw structure, high plasticizing effect, and stable extrusion. Its spiral surface is coated with double-alloy spray welding, which ensures high wear resistance. This ...

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How to Maintain an Extruder Barrel Screw? May 24

How to Maintain an Extruder Barrel Screw?

New extruders may experience problems caused by worn extruder barrel screws. In addition to the wear on the screw, the barrel can be problematic as well. The screw is a crucial part of the extruder and is a critical component for the smooth...

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What is the role of screw in plastic machinery? May 19

What is the role of screw in plastic machinery?

The screw is an important part of the injection molding machine. Its function is to convey, melt, compact, stir and press the plastic. All of these are accomplished by the rotation of the screw in the barrel. It can be seen that the role of...

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What is the cause of screw and barrel damage and how to fix it? May 12

What is the cause of screw and barrel damage and how to fix it?

The combined working quality of the two parts, the screw and the barrel, has an important influence on the plasticization of the material, the quality of the product and the production efficiency. The quality of their work is related to the...

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How to improve the use of screw barrel? May 05

How to improve the use of screw barrel?

The injection molding screw works under high temperature, high pressure, high mechanical torque and high friction environment for a long time. The first few factors are required by the process conditions, and the loss caused by friction is ...

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What are the functions and uses of conical twin-screw? Apr 28

What are the functions and uses of conical twin-screw?

The conical twin-screw has the characteristics of uniform plasticization and mixing, high output, stable quality, wide adaptability, long service life, and direct molding of PVC powder. With the corresponding forming head mold and auxiliary...

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