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

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.

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.

XPS foam machine production line XPS extrusion polystyrene foam board, also known as the extruded polystyrene board (XPS), has a perfect obturator honeycomb structure, its density, water absorption, coefficient of thermal conductivity and so on steam permeability coefficient is lower than other types of tabular heat preservation material, thus has good intensity, light material, airtight, anticorrosion, aging resistance, low price, etc, are widely used in heat preservation and heat insulation construction, highway, railway, airport, square of the anti-freezing heat preservation, home decoration and other fields, is currently the market recognized the best thermal insulation material. Used for steel structure workshop, sheet metal housing and colour wave tile, have heat preservation effect; To make heat plate freezer, cold insulation, waterproof;

HDPE twin-wall helix pipe extrusion lineHDPE large diameter draining pollution pipe lineLarge diameter winding tube unitProjects conduit equipmentHollow wall HDPE winding pipe machine HDPE large diameter hollow wall winding pipes have been recognized as a substitute for cement pipes and cast iron pipes since it possesses many particular advantages. HDPE large diameter hollow pipes have big market potentiality. The line 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.Large-diameter hollowness winding pipe production lineThe Qingdao changjie machine Co.Ltd produce the large-diameter winding pipe production line for the fourth generation of product, the outlook design was already artistic, the automaticity is high, the operation is simple, the production pipe speed is quickest for the same profession. This product hits the product for the changjie Company hosts, its sales volume for this local same profession first. The present company produces the double wall winding pipe production line, only need replace the partial molds then to produce the single wall winding pipe, may save raw material to reach 40%, is suitable in the different use special demand, has made the enormous contribution for the energy conservation environmental protection!•The HDPE large –diameter hollowness winding pipe, is the country “15” the key science and technology research project. Our company through the introduction digestion overseas advance technology, has developed successfully the HDPE large –diameter hollowness winding pipe production line and puts in the market, may produce tubing caliber 200-3000mm the large pipe. This pipe is the substitution steel pipe, cement pipe's ideal draining water pollution discharge product.•The HDPE large –diameter hollowness winding pipe non-toxic, tasteless, the corrosion preventing, the anti-aging, Weather fastness is  good (-70~C to +80~C) to be possible in underground and the surface use. Widely applies in agricultural, the industry water distribution project.•This production line equipment operation is keen, the output is high, the product size is stable, the complete set production line provides the craft formula and “hands over the key” the project. 

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.

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.

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

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.