Product Description

Multi-Span Plastic Film Agriculture Greenhouse for Salad

  1. Multi-span film greenhouse

      Mutil span greenhouse is the upgrade product of single span greenhouse. This kind greenhouse  with bigger space and enhance the land utilization.  Many big agriculture machine can work in side. The kind greenhouse suitable for trees and flowers’ planting. You can also add outer shading system, inner shading system,cooling system, heating system, irrigation system to make the best suitable greenhouse environment.
     We can provide one-stop service from designing, production, installation, testing and after-sale service. All the greenhouses can be made by customers’ demand and can be advised by our professional experience. Each greenhouse has been designed with a special grooved channel frame to help reinforce the panels against wind and bad weather.

Greenhouse Advantages

     Hot-dip galvanized steel pipe,and the zinc coatding is 275g/sqm.,no welding point ,all bolted connections,so there’s strong corrosion resistance,so at least 20 years of service life, saving you cost.
      All the steel pipe were after hot dip galvanized processing, with great corrosion resistance, so the service life is more than 20 years. You can customized the structure to make the high strength.
     There are PE and PO films,It has the characteristics of anti-drip, anti-ultraviolet, anti-aging ability and long service life.Film thickness: 0.12mm/0.15mm, Customized,Span:6.8m/8.0m/9.6m/10.8m, Customized,Length:12m, 16m, 20m, 24m, 28m, 32m, Customized,Height:2.5m-8m, Customized.Hight light transmittance light transmittance is up to 90%.

Larger usable area
The multi-span greenhouse is a kind of super-large greenhouse which uses scientific method, reasonable design, and excellent materials to connect the existing independent single-mode greenhouses. Many big agriculture machine can work in side.

*  Cost effective
Multi-span film greenhouse is the most cost-effective and the most popular greenhouse in the world.

2. Greenhouse specification




Three layers co-extrusion pep film: drop layer,insulation layer and anti-age layer




Hot dip galvanized steel









Wind load


Snow load


3. Greenhouse system (Depend on customers’ request)

The ventilation system has top ventilation and side ventilation
The film greenhouse depends on the control of manual or electric film winder to realize the opening and closing of ventilation system.

Cooling system cooling fan and cooling pad use the water evaporation cooling principle to achieve the purpose of cooling.The system has the advantage of simple structure,low cost,low energy consumption,and reliable operation.

Heating system mainly include boilers and radiators,boilers sucr as gas boiler,diesel boiler,and biomass boiler;Radiators have Radiating pipe,heating pipe for hydroponics system,heating coil fan,gardening heater fan.
Besides, the Quilt for thermal insulation used together with heating boiler etc.

Outside shading System.
Material: circular knitting silk curtains
Function: The external shading system can improve the greenhouse environment by adjusting the light intensity.When the greenhouse is exposed to strong sunlight, the use of a shading screen, so that most of the sunlight can not be directly exposed to the greenhouse, to avoid burning crops after the strong light.

Inside Shading System.
Material: aluminum foil and polyester woven.
Function: reduce temperature, save energy, prevent lower condensation

1. Irrigation and fertilization water treatment system with reasonable design improves absorption function of crops toward fertilizer. Meanwhile, it improves crop quality.
2. It is especially suitable for the area with poor water quality and crop greenhouse which has high requirements for planting water quality.
3. The advanced treatment process is combined with greenhouse production process effectively.
                               Hydroponics are vegetables grown in most layer of the nutrient solution,which provide water,nutrients and oxygen only through nutrient solution.They are different from those grown in traditional soil cultivation.Vegetable grown in water cycle are short and rich in vitamins and minerals necesary for various human bodies. 

4. Related Products

Single-span CZPT type greenhouse Venlo type glass greenhouse
Venlo type PC greenhouse  Solar greenhouse

5. Worldwide cooperation/Our project in domestic and overseas market
     Every year we ship containers to all over the world. We have professional engineer department, if customer request, we can send our engineers to foreign countries to CZPT the installation. Every year there are many customers visiting our factory for business cooperation.
     Our greenhouse also exports to many countries in North America,Europe,Africa,Southeast Asia,Middle east and Oceania,sush as:United Sates,Canada,the Netherlands,Germany,Italy,France,Ukraine,Russia,Uzbekistan,Kazakhstan,Saudi Arabia,The United Arab Emirates,Ruwait,Thailand,India,Australia,Algeria,Nigeria,Tanzania and so on….

6.Our company
HangZhou CZPT Modern Agri culture Development Co.,Ltd is located in No.3337 Xihu (West Lake) Dis. Street,Economic Development Zone,HangZhou City,ZheJiang Province,P.R.China.We are specialized in manufacturing greenhouse and greenhouse products.
We are committed to research the efficient agricultural equipment and development of modern agriculture.We specialized in greenhouse engineering scintific research and steel structure design,production,installation,greenhouse material,greenhouse accessories for temperature design,production,installation,greenhouse material,greenhouse accessories for temperature control equipment,heat preservation facilities,sales and service.

Sincerely welcome to our factory!

7. FAQ

* Q: Do you offer customized greenhouse?
   A: Yes. As long as you offer details of local climate and requirements of the greenhouse you want ,we will offer free design program and quotation to you.
* Q: How long is your delivery time? 
  A: Generally it is 20-30 days after order. 
* Q: Do you provide samples? Is it free or extra? 
  A: Yes, we could offer the sample for free charge but do not pay the cost of freight. 
* Q: How to install the greenhouse? Do you provide installation service? 
  A: We will provide paper or video building manual, or CZPT we will send engineer to do installation guidance. 


What is the purpose of the bushing?

If you notice the truck making noises when cornering, the bushings may be worn. You may need to replace the ball joint or stabilizer bar, but a simple inspection will reveal that the noise is coming from the bushing. The noise from a worn bushing on a metal joint can mimic the sound of other problems in the suspension, such as a loose stabilizer bar or a failed ball joint.


What is the purpose of the bushing? They play an important role in the operation of various mechanical parts. Their main functions include reducing the clearance between the shaft and the bearing and reducing the leakage of the valve. Bushings are used in different ways to ensure smooth operation and longevity. However, some new designers don’t appreciate the functionality of the case. So let’s discuss these features. Some of their most common applications are listed below.
First, the shell does a lot of things. They reduce noise, control vibration, and provide amazing protection for all kinds of industrial equipment. Large industrial equipment faces more wear, vibration and noise, which can render it completely inoperable. Bushings help prevent this by reducing noise and vibration. Bushing sets also extend equipment life and improve its performance. Therefore, you should not underestimate the importance of the casing in your device.
Another common function of bushings is to support components during assembly. In other words, the bushing reduces the risk of machine wear. In addition to this, they are superior to bearings, which are notoriously expensive to maintain. However, they are still useful, and their versatility cannot be overemphasized. If you’re considering installing one, you’ll be glad you did! These products have become a necessity in the modern industrial world. If you’re wondering how to choose one, here are some of the most common bushing uses.
Electrical bushings are an important part of many electrical equipment. They carry high voltage currents through the enclosure and provide an insulating barrier between live conductors and metal bodies at ground potential. They are made of a central conductive rod (usually copper or aluminum) and surrounding insulators made of composite resin silicone rubber. Additionally, the bushings are made of various materials. Whether copper, aluminum or plastic, they are an important part of many types of electrical equipment.


There are several different types of bushings on the market today. They may be cheap but they are of good quality. These products can be used in telephones, cable television, computer data lines and alarm systems. The key to buying these products online is finding the right appliance store and choosing a high-quality product. An online appliance store should have comprehensive information and ease of use. For the right electrical bushing, you should look for reliable online stores with the best prices and high quality products.
Capacitive grading bushings use conductive foils inserted into paper to stabilize the electric field and balance the internal energy of the bushing. The conductive foil acts as a capacitive element, connecting the high voltage conductor to ground. These types of bushings are sometimes referred to as capacitor grade bushings. Capacitive grading bushings are usually made of paper impregnated with epoxy resin or mineral oil.
When buying enclosures, you should know how they are used. Unlike ball bearings, bushings should be stored upright so that they are in the correct working position. This is because horizontal placement can cause air bubbles to form in the fill insulation. It is also important to store the bushing properly to prevent damage. The wrong way to store these components can result in costly repairs.
In addition to the physical structure, the bushing insulation must also be effective over the long term. It must resist partial discharge and working electric field stress. The material and design of the bushing can vary widely. Early on, porcelain-based materials were popular in bushing designs. Porcelain was chosen because of its low cost of production and very low linear expansion. Ceramic bushings, on the other hand, require a lot of metal fittings and flexible seals.


The RIG 3 Bushing Durability Test Standard simulates real-world service conditions for automotive bushings. This three-channel test standard varies casing loads and stresses by applying a range of different load conditions and various control factors. This test is critical to the durability of the case, as it accurately reproduces the dynamic loads that occur during normal use. This test is a key component of the automotive industry and is widely used in many industries.
The Advanced Casing Model has 5 modules to address asymmetry, nonlinearity, and hysteresis. This model also represents the CZPT lag model. The model can be parameterized in the time domain using MATLAB, and the results can be exported to other simulation software. The developed bushing model is a key component in the durability and performance of vehicle suspension components.
A conductive material is coated on the inner surface of the sleeve. The coating is chosen to conduct a certain amount of current. The conductive path extends from the blade spacer 126 to the sleeve projecting edge 204 and then through the housing 62 to the ground. The coating is made of a low friction material and acts as a wear surface against the bushing sidewall 212 and the housing 62 .
Another important factor in a bushing’s durability is its ability to friction. The higher the operating speed, the greater the load on the bushing. Since bushings are designed for lighter loads and slower speeds, they cannot handle large loads at high speeds. The P-max or V-max value of a bushing is its maximum load or speed at 0 rpm. The PV value must be lower than the manufacturer’s PV value.


If you need to replace the bushing on the control arm, you should understand the cost involved. This repair can be expensive, depending on the make and model of your car. Generally, you should pay between $105 and $180 for a replacement. However, you can choose to have it done by a mechanic at a lower cost. The labor cost for this job can be around $160, depending on your automaker.
The cost of replacing the control arm bushings can range from $200 on the low end to $500 on a luxury car. While parts are cheap, labor costs are the highest. Mechanics had to remove suspension and wheel assemblies to replace bushings. If you have some mechanical knowledge, you can replace the bushing yourself. Control arm bushings on the wheel side are usually about $20 each. Still, if you’re not a mechanic, you can save money by doing it yourself.


Press-fit bushings are installed using a retaining ring with a diameter 0.3/0.4 mm larger than the inner diameter of the bushing. To ensure accurate installation, use a mechanically driven, pneumatic or hydraulic drill and insert the bushing into the appropriate hole. This process is best done using mounting holes with drilled holes for the clamps. Make sure the mounting hole is in the center of the bushing and free of debris.
Once the bushing is positioned, use a vise to install its nut. A cold bushing will compress and fit the shell better. Place the sleeve in the refrigerator for at least 24 hours to aid installation. After removing the bushing from the refrigerator, make sure it has enough diameter to fit into the enclosure. Next, place the opposite socket into the enclosure and use it as a stand. After a few minutes, the bushing should be fully seated in the housing.
Install the new bushing into the housing hole. If the previous 1 had a metal case, insert the new 1 through the taper. Always lubricate the inner and outer surfaces of the bushing. Then, apply pressure to the inner metal sleeve of the new bushing. You may notice that the new bushing does not exactly match the housing hole. However, that’s okay because the outer diameter of the bushing is larger than the outer diameter of the hub drive.
The installation of the bushing requires the use of the hydraulic unit 16 . Hydraulic unit 16 is located near the #1 journal of the camshaft and extends from #2 to #7. Hydraulic fluid forces piston 22 away from the outer end of cylinder 20 and pushes shaft 14 forward. The shaft is then moved forward, pushing the bushing 17 onto the piston. Multiple bushings can be installed in a single engine.

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