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.

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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

What are the advantages of parallel and conical twin screw extruders? Oct 26

What are the advantages of parallel and conical twin screw extruders?

Is a parallel twin screw extruder better or a conical twin screw extruder better? This is a question that users often ask when purchasing a twin-screw extruder. Parallel twin screw extruder Due to the small size of the center distance betwe...

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What are the similarities and differences between parallel and conical twin screw extruders? Oct 20

What are the similarities and differences between parallel and conical twin screw extruders?

Parallel and the conical twin-screw extruder have the same thing: it has a conveying mechanism that forces the plastic forward, good mixing and plasticizing ability and dewatering ability, and basically the same adaptability to the material...

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How many types of special screws are there? (2) Oct 09

How many types of special screws are there? (2)

1. PET special screw: for PET low viscosity, large specific heat capacity, easy-to-stick materials and PET preforms that require fast plasticization and uniform plasticization, the screw has good plasticization, high stability, non-stick ma...

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How many types of special screws are there? (1) Sep 29

How many types of special screws are there? (1)

The special screw is a high-viscosity non-crystalline plastic with poor fluidity. It is easily degraded when heated for a long time. It has a large feeding torque, difficult to melt, and is easy to block. It requires high material temperatu...

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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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