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.

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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...

Where are your main exports?

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

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...

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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 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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What are the characteristics of conical twin screw extruder? Apr 21

What are the characteristics of conical twin screw extruder?

Most polymers must be compounded, compounded and then pelletized into a marketable raw material before being made into the final product. There are many different pelletizer designs, but all pelletizers can be divided into two broad categor...

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What is the application principle of twin screw extruder? Apr 14

What is the application principle of twin screw extruder?

The twin screw extruder was originally produced in food and plastic processing. In recent decades, its application range has continued to expand, and has expanded to rubber, paint, petrochemical fiber, building materials, pulp, food, feed p...

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What problems should be paid attention to when the plasticization of the screw barrel is not good? Apr 08

What problems should be paid attention to when the plasticization of the screw barrel is not good?

If the plasticization of the screw barrel is not good, the following problems should be paid attention to: 1. Clean the plastic head or replace the plastic head! Remove the head and burn it with fire to completely burn the remaining materia...

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What are the common materials and material requirements of the barrel and screw? Apr 01

What are the common materials and material requirements of the barrel and screw?

Common materials for barrel and screw: Today, the most commonly used and common barrel and screw materials in my country are No. 45 steel, 40Cr, nitrided steel and 38CrMOAl. The performance requirements of these materials are introduced one...

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