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

What is the difference between ordinary screw and alloy screw? (2) Sep 21

What is the difference between ordinary screw and alloy screw? (2)

Flame hardened surface or high frequency brittle hard Surface hardening is a convenient processing method for cheap noodles. The hardness after quenching can reach about HRC55, and the quenching depth can reach 2–3mm. When flame hardening i...

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What is the difference between ordinary screw and alloy screw? (1) Sep 14

What is the difference between ordinary screw and alloy screw? (1)

In recent years, due to the increase of the screw speed and the increase of the pressure in the barrel, it is mainly due to the addition of a large amount of filler during extrusion, which makes the wear resistance of the screw and barrel m...

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How important is the maintenance of alloy barrels? Sep 07

How important is the maintenance of alloy barrels?

The extruder screw and alloy barrel are the soul parts of the extruder, and their combination is related to the working quality of the extruder, the plasticizing capacity of the material, and the production efficiency. Therefore, when the s...

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How should we choose parallel twin screws? (2) Sep 01

How should we choose parallel twin screws? (2)

1. Look at the production process.High-quality screws need to go through multiple heat treatment processes, such as: quenching and tempering, tempering, qualitative, nitriding, etc., in order to meet the requirements of the screw. 2. Look a...

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How should we choose parallel twin screws? (1) Aug 24

How should we choose parallel twin screws? (1)

Today, let’s talk about parallel twin screws and how to choose parallel twin screws. Next, let’s take a look down with the editor and let’s understand. The spiral surface of the parallel twin screw is usually spray-welded with a unique form...

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What are the causes and repair methods of the damage to the screw and barrel of the plastic extruder? (2) Aug 17

What are the causes and repair methods of the damage to the screw and barrel of the plastic extruder? (2)

Repair of the barrel The inner surface of the barrel is harder than the screw, and its damage comes later than the screw. The scrap of the barrel is the increase in the inner diameter due to time wear. Its repair method is as follows: 1. Fo...

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What are the causes and repair methods of the damage to the screw and barrel of the plastic extruder? (1) Aug 11

What are the causes and repair methods of the damage to the screw and barrel of the plastic extruder? (1)

The combined working quality of the two parts of screw and barrel has an important influence on the plasticization of materials, the quality of products and the production efficiency. Their work quality is related to the manufacturing accur...

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What are the correct ways to use the screw barrel? (2) Aug 04

What are the correct ways to use the screw barrel? (2)

1. Check out the debris in the plastic guess. Generally speaking, there is no debris in the fresh plastic purchased originally, but through transportation, weighing, drying, color mixing, especially the addition of recycled materials, it ma...

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What are the correct ways to use the screw barrel? (1) Jul 27

What are the correct ways to use the screw barrel? (1)

1. Each plastic has an aspirational plasticization processing temperature scale, and the barrel processing temperature should be controlled to make it close to this temperature scale. Granular plastics enter the barrel from the hopper and f...

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