20 years of R&D and production experience of plastic extruder machines.

PRODUCTS
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Now our company has formed in Pipe production line/Plate production line/Profile production line three series of plastic extrusion line’s design, manufacture and development of comprehensive ability, meanwhile we can also provide customers the auxiliary equipment, various of molds and parts processing service!

800mm Large Diameter HDPE/MDPE Water Supply and Gas Supply Pipe Extrusion Machine
800mm Large Diameter HDPE/MDPE Water Supply and Gas Supply Pipe Extrusion Machine
Performance and advantages: The HDPE/MDPE water supply pipe and gas pipe production line independently developed by Changjie Company has a unique structure, high degree of automation, convenient operation, stable and reliable continuous production. The pipeline produced by this production line has moderate rigidity, strength, good flexibility, creep resistance, environmental stress crack resistance and good thermal welding performance. It has become the first choice for urban gas pipelines and outdoor water supply pipes.
Professional Plastic Pipe Making Machine manufacturers
Professional Plastic Pipe Making Machine manufacturers
Advantages of PVC pipes:1. Excellent in chemical corrosion, no rust;2. With self extinguishing and flame retardant;3. Excellent in anti aging, can be used 20years to 50 years between the temperature from subzero 15 to 60 degrees Celsius;4. Wall is smooth, inner wall surface tension, it is difficult to form scale, the fluid transport capacity of 43.7% higher than the cast iron pipe;5. The weight is light, easy to flaring, bonding, bending, welding, pipe installation workload is only 1 / 2 to the steel pipes, low labor intensity, short duration;6. Good electrical properties of resistance, volume resistance of 1 to 3 x 105Ω.cm, breakdown voltage 23 to 2kv/mm;7. The toughness of PVC pipe is low, linear expansion coefficient is high, operating temperature range is narrow.
HDPE large diameter hollow wall winding pipe production line
HDPE large diameter hollow wall winding pipe production line
HDPE large diameter hollow wall winding pipe production lineThe HDPE large diameter hollow wall winding pipe production line is also called HDPE winding pipe extruder machine, which adopts two sets of single-screw extruders to ensure high speed and quality extruding; Unique design of composite die-head and forming by spiral rotation ensure high efficiency and quality; Advanced PLC Control system makes operation very convenient and operation very efficient; Special pipe fittings are adopted and connection is very convenient.
High Quality PVC WPC Pelletizing line/Plastic granulator machine Wholesale - 青岛隆昌捷机械有限公司
High Quality PVC WPC Pelletizing line/Plastic granulator machine Wholesale - 青岛隆昌捷机械有限公司
High Quality PVC WPC Pelletizing line/Plastic granulator machine Wholesale - 青岛隆昌捷机械有限公司. is manufactured in a dust-free casting and molding workshop with high-technology advanced 3D modeling equipment, to improve its productivity and mold precision.
CASE
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All these for improving our product's quality, improving our company's efficiency and supplying better service to customers!

High Quality HDPE GEOCELL SHEET EXTRUSION MACHINE WORKING IN CUSTOMER'S FACTORY Wholesale - 青岛隆昌捷机械有限公司
High Quality HDPE GEOCELL SHEET EXTRUSION MACHINE WORKING IN CUSTOMER'S FACTORY Wholesale - 青岛隆昌捷机械有限公司
HDPE geocell sheet extrusion machine working in customer's factory more than 7 years, the machine make the sheet width 1.5m, also can according different moulds to make different patterns.The grid is widely used for reinforcing mad bed of expressway municipal road, railway and airport runway; reinforcement of reinforced earth on both side of road, railway and rover; strengthening the dyers of river and sea; enclosing wall of orchard, vegetable plot, domestic animal and land. The grid is made of high polymer first extruded by extruder and then drew longitudinally. The grid with high drawing strength is suitable for all kinds of soil. Its all functions and indexes surpass the earthwork net which not be drew, so it is the best ideal reinforced material. As the set is characterized by high output, good benefit, even quality and easy operation, so it is the best choice for earthwork material and plastic products manufacture to develop new products.-To stable the railway bed-To stable the highway bed-To fix the loading capacity of the dikes and the walls-Used in the river regulation-To support the pipeline and drains-To avoid the landslide and used in composite walls to support gravity loading-Used in independent wall, boatyard and river bank and so on-Used in the tidy-up of the desert, beach, river bed and the river bank
HDPE three layers co-extrusion pipe production line working in customer's factory
HDPE three layers co-extrusion pipe production line working in customer's factory
This PE pipe production line has been in operation in the customer’s factory for more than 2 years. the equipment has been running smoothly without major problems. At the same time, it has created objective benefits for customers and has been recognized by customers.During 6 years, until now this customer have bought our 6 pipe lines, we have build long and good business relastionship.
PVC board/sheet production line  working good in our customer's factory
PVC board/sheet production line working good in our customer's factory
PVC sheet production line working in our Poland customer factory,This equipment has been in operation in the customer’s factory for more than three year. Since these years, the equipment has been running smoothly without major problems. At the same time, it has created objective benefits for customers and has been recognized by customers.
500MM HDPE THREE LAYER CO-EXTRUSION LINE WORKING IN OUR TAIWAN CUSTOMER'S FACTORY
500MM HDPE THREE LAYER CO-EXTRUSION LINE WORKING IN OUR TAIWAN CUSTOMER'S FACTORY
THIS 500MM HDPE THREE LAYER CO-EXTRUSION LINE HAVE WORKED IN OUR CUSTOMER'S FACTORE MORE THAN 5 YEARS, IN HIS COMPANY ALSO HAVE OTHER PIPE EXTRUSION LINES SUPPLIED BY US, HIS COMPANY ALSO IS ONE OF THE BEST PIPE MANUFACTURERS IN TAIWAN.
ABOUT US

QINGDAO LONGCHANGJIE MACHINE CO.,LTD. is located in the world-famous port and coastal open city - Qingdao, traffic transportation has three advantages in sea, land and air. It was founded in 2001.

During more than 20 years, changjie staff always absorb the professional technology from domestic and overseas, cooperate with domestic scientific research institution, devote our minds to research, development, design and manufacture kinds of extruding machineries, let our technology come up to the domestic and international advanced level. 

Now our company has formed in Pipe production line/Plate production line/Profile production line three series of plastic extrusion line’s design, manufacture and development of comprehensive ability, meanwhile we can also provide customers the auxiliary equipment, various of molds and parts processing service! 

Now our production line have sold to many countries of the world, in the north is Russia,Ukraine,Kazakstan,Mongolia, in the west is India, Iran, Egypt, Sudan, Libya, SouthAfrica,and also American,Vietnam,Singapore, Korean,Indonesia,Taiwan and so on. All these, thanks to our overseas customers’ trust and support. 

In order to protect our brand, “changjie” brand has been registered  in the China Industrial and Commercial Administration; In order to carry out scientific administration ,we have passed CE and ISO international quality system certificate; In order to improve the overall quality of enterprise management, we have implemented 7S on-site management standards ... ... All these for improving our product's quality, improving our company's efficiency and supplying better service to customers! 

Sincere cooperation, customer first, forge ahead in unity to create a brilliant - this is our changjie staff's purpose of development! With the quality to win the market; With the management to create benefit; With innovation to pioneer development – this is our changjie staff's concept of development. 

Changjie’s pursuit is common development with friends at home and abroad, mutual benefit, and creats a win-win situation! Chang Jie's goal is even higher! Even faster! Even stronger! ! General manager-Geng Yongchang, leading all the company’s staff sincerely welcome you! ! !

IF YOU HAVE MORE QUESTIONS, WRITE TO US
Just tell us your requirements, we can do more than you can imagine.