About Changjia

Zhoushan Changjia Plastic machinery Co., LTD is a

China shoe machine barrel screws manufacturers and extruder replacement parts 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

How to clean the extruder screw? Jul 06

How to clean the extruder screw?

For extruders manufacturing thermosetting powder coatings, when changing the resin type or color type of the coating, it must be cleaned to prevent interference between the powder coating varieties and ensure the quality of the products pro...

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What are the characteristics of the screw barrel of the plastic granulator? Jun 29

What are the characteristics of the screw barrel of the plastic granulator?

The twin-screw granulator is mainly used for the filling, blending, modification, addition, chlorination, polypropylene and super absorbent resin processing of rubber, plastic and engineering resin. working principle: The material passes th...

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What are the maintenance methods for the screw barrel of the injection molding machine? Jun 22

What are the maintenance methods for the screw barrel of the injection molding machine?

1) Avoid screw idling and slipping; 2) Avoid mixing POM and PVC into the barrel at the same time, a reaction will occur at the melting temperature and cause serious industrial accidents; 3) Avoid foreign objects falling into the material ba...

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How to increase the service life of the screw of the injection molding machine? (2) Jun 16

How to increase the service life of the screw of the injection molding machine? (2)

(1) Check the sundries in the plastic. Generally speaking, there is no debris in the first-time plastic purchased from the original, but after transportation, weighing, drying, and color mixing, especially when adding recycled materials, it...

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How to increase the service life of the screw of the injection molding machine? (1) Jun 09

How to increase the service life of the screw of the injection molding machine? (1)

Generally, the screw rods have been nitridized to improve the surface hardness, that is, to improve the wear resistance. But if it is neglected, the screw of the injection molding machine is operated under high temperature, high pressure, h...

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How to preventive maintenance and maintenance of injection molding machine? Jun 02

How to preventive maintenance and maintenance of injection molding machine?

Under the premise of selecting the correct injection molding machine model, regular preventive maintenance is an effective way to ensure the normal operation of the injection machine. The so-called preventive maintenance is a series of prev...

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What is the cause of screw wear? (2) May 26

What is the cause of screw wear? (2)

1. The speed should be adjusted properly. Because some plastics are added with reinforcing agents, such as fiberglass, minerals or other fillers. The friction of these substances on metal materials is often much greater than that of molten ...

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What is the cause of screw wear? (1) May 18

What is the cause of screw wear? (1)

1. Each plastic has an ideal plasticizing processing temperature range. The barrel processing temperature should be controlled to make it close to this temperature range. The granular plastic enters the feeding barrel from the hopper, and i...

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Why does the screw of the injection molding machine appear to be locked? May 11

Why does the screw of the injection molding machine appear to be locked?

In the injection molding production and processing, the phenomenon that the screw of the injection molding machine is stuck and does not rotate often occurs. If the screw protection device of the injection molding machine does not work, the...

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