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.

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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

Production method of twin screw extruder May 14

Production method of twin screw extruder

Our common twin-screw extruders are equipped with a double-wrist conjugate feeding system for feeding, so that large pieces of material can be directly put into the feeding hopper, and the material is forced through the double-wrist wheel. ...

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Type and cleanliness of twin screw extruder May 06

Type and cleanliness of twin screw extruder

Before using a twin-screw extruder, we must first understand what kind of extruder we need, because there are many different types of machines on the market according to our different needs, so what types of these machines are there? ? Ther...

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What are the three precautions for twin screw extruders? Apr 30

What are the three precautions for twin screw extruders?

1. Structural principles The basic mechanism of the extrusion process is a screw that rotates in the barrel, pushing the plastic forward. The spiral structure is a slope wound on the center layer, the purpose of which is to increase pressur...

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What are the technical characteristics of the twin screw extruder? Apr 23

What are the technical characteristics of the twin screw extruder?

1. Have a great safety factor Compared with the traditional production process, the automatic manufacturing technology of twin-screw extruder has a great safety factor when used. According to the setting of the development program, the tech...

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Ways to reduce the abrasion of the barrel and screw Apr 16

Ways to reduce the abrasion of the barrel and screw

In order to reduce the wear of the barrel and screw, we have taken corresponding measures in the design and manufacturing process. Through continuous improvement, the barrel and screw design can adapt to different, updated and higher requir...

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Reasons for brittle failure of pvc pipes in use Apr 09

Reasons for brittle failure of pvc pipes in use

1. The influence of air hammer: When using PVC-U pipes, the air in the pipeline cannot be exhausted or the exhaust valve is set improperly. When there is gas in the pipeline, it is easy to cause airbags in the pipeline. It cannot directly c...

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What is the reason for the long service life of PE pipes? Apr 02

What is the reason for the long service life of PE pipes?

My country's plastic pipes are developing rapidly and their quality is getting better and better. The current plastic pipes are mainly PVC-U pipes, PE pipes, and PP-R pipes. Because of its excellent performance, PE pipes can be used for urb...

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What is the difference in the nature of the pipe production line? Mar 26

What is the difference in the nature of the pipe production line?

There are many plastic pipe equipment, including pipe production line, its composition: plastic pipe equipment is composed of control system, extruder, die, shaping cooling system, tractor, planetary cutting equipment and turning frame. Eac...

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Structural characteristics of barrel screw Mar 19

Structural characteristics of barrel screw

1. The structure difference between conventional, low-filling and high-filling (1) Geometry and matching relationship of thread rib and thread groove Less CaCO3: larger between screw and screw Large calcium carbonate content: In order to in...

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