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...

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

What are the application advantages of twin screw extruders? Oct 15

What are the application advantages of twin screw extruders?

There are many types of extruders nowadays, and ordinary extruders are also used by many users, but the twin-screw extruder is currently widely used. What are its application advantages? Mainly the advantages of wearing parts, reducing prod...

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What are the granulation skills of using twin screw granulator? Oct 09

What are the granulation skills of using twin screw granulator?

When using a twin-screw granulator, if you want the entire finished product to show a very good state, you need to learn to use some granulation skills. These skills are learning to listen to the sound, learn to look at the material, and lo...

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What are the functions of the filling modified granulator? Sep 30

What are the functions of the filling modified granulator?

The filling modified granulator adopts new technology and has many advantages compared with the traditional granulator. It has high carrying capacity, can realize the functions of self-cleaning, interchangeability and energy saving, and has...

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The working principle and production process of twin screw granulator Sep 24

The working principle and production process of twin screw granulator

The twin-screw granulator can process plastic products and has good performance. The equipment is operated through the intake process, compression and exhaust process to ensure that the output product meets the quality requirements. In addi...

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What are the main factors and safety precautions that affect the quality of plasticization? Sep 14

What are the main factors and safety precautions that affect the quality of plasticization?

The twin-screw granulator can produce plastic products and has good performance. When using, pay attention to the factors that affect the quality of plasticization, such as: aspect ratio, back pressure, etc., to prevent affecting the qualit...

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What principles should be paid attention to for twin screw extruder? Sep 06

What principles should be paid attention to for twin screw extruder?

When using a twin-screw extruder, pay attention to its principles, that is, structural principles, temperature principles, and deceleration principles, which can help you operate it better. In addition, in order to improve its performance, ...

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What are the reasons for the damage of the screw of the twin-screw extruder? Sep 03

What are the reasons for the damage of the screw of the twin-screw extruder?

The twin-screw extruder is a kind of equipment mainly for extruding and forming plastic products, and has good performance. When using it, pay attention to protecting its screw, otherwise it is easy to damage and affect its normal use. If d...

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How to solve the yellowing of the extruded products of the twin-screw extruder? Aug 27

How to solve the yellowing of the extruded products of the twin-screw extruder?

1. Check whether the thermocouple in each area of the barrel is working normally, and whether the fan in each area is operating normally. If there is a problem with the thermocouple or the fan, it will cause the screw barrel to overheat loc...

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How to solve the uneven wall thickness of the twin-screw extruder? Aug 20

How to solve the uneven wall thickness of the twin-screw extruder?

1. Inaccurate positioning of the mouth template Due to the inaccurate positioning of the template in the die, the gap between the die is uneven, which causes the Ballas effect to be different, and eventually the wall thickness of the produc...

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