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 should be paid attention to in the plasticizing of the barrel and screw? Jan 21

What should be paid attention to in the plasticizing of the barrel and screw?

The barrel and screw are widely used in: granulation, wire drawing, film blowing, tube drawing, foaming, sheet extrusion, technical board, etc. The barrel and screw plasticizing treatment process: heat treatment, nitriding treatment, let's ...

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Why does the screw of the injection molding machine break during use? Jan 14

Why does the screw of the injection molding machine break during use?

The screw of the injection molding machine has excellent mixing and plasticizing ability, and the material stays in the extruder for a short time, which is suitable for powder processing. The screw of injection molding machine has the chara...

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How to clean the screw? Jan 07

How to clean the screw?

1. After mixing the cleaning agent and the cleaning material in proportion, inject it to the end. 2. Use a brass brush to remove the resin deposit residue, or use a burner or similar device to heat the resin deposit on the screw. After heat...

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What are the common faults of the main motor of the twin-screw granulator? Dec 30

What are the common faults of the main motor of the twin-screw granulator?

The main motor of the twin-screw granulator is a very important part of the equipment. It must be operated in accordance with certain requirements when in use, otherwise it is prone to failure. Therefore, you must know its use precautions w...

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How to improve the efficiency of the twin screw extruder? Dec 24

How to improve the efficiency of the twin screw extruder?

1. When the screw speed is the same, increasing the depth of the screw groove can greatly increase the conveying capacity. In contrast, the plasticization and mixing level of the screw must be increased accordingly, which requires the screw...

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How to control the temperature of the twin screw extruder? Dec 17

How to control the temperature of the twin screw extruder?

With the continuous improvement of the production, manufacturing, and processing technology of the twin-screw extruder, not only feeding and plasticizing, but also dewatering and drying processes must be carried out. In order to better meet...

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What are the characteristics of PE pipe production line? Dec 10

What are the characteristics of PE pipe production line?

High degree of automation, convenient operation, continuous production, stable and reliable. The PVC plastic pipe production line produced has many characteristics such as non-toxic, odorless, non-corrosive, anti-aging, and good weather res...

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What is the process of pvc twin-screw granulator? Dec 02

What is the process of pvc twin-screw granulator?

1. Preparation: sieving the stabilizer, filler, and coloring agent with 80 mesh screens, respectively add plasticizer to soak and grind them with a three-roll mill or colloid mill. Standby after weighing. After the plasticizer is evenly mix...

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What is the principle of a twin screw extruder? Nov 23

What is the principle of a twin screw extruder?

1. Co-rotating twin-screw extruder This type of extruder has low speed and high speed. The former is mainly used for profile extrusion, while the latter is used for special polymer processing operations. (1) Closely meshing extruder. The lo...

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