Technical Advantage

Open Corporation imported the technology of designing and manufacturing steel joist that has many unique features comparing with structural secondary beam commonly used in current domestic construction. For example:

1. Save in Steel Consumption:
   It is well known that the condition of more strength with less rigidity often occurs while designing the steel members. The steel strength won't be utilized to its maximum extend by common structure. The Open steel joist with elaborate design of chords and web can save more structural steel consumption. When used as roof purlin, the Open steel joist can normally enlarge the column space from 9 meters to 15 meters without increase of steel consumption. When used as mezzanine joist, it can save around 30% of steel consumption.
   
   
2. Reducing Construction Cost:
   The steel part of the construction cost can be lowered due to less steel consumption. Beyond this, the investment on civil foundation can be saved at least 30% due to bigger column space. The thickness of the concrete floor can be reduced accordingly due to smaller interval of mezzanine joist. While saving floor concrete cost, the owner also acquires a smaller floor dead load which needs little requirements for structure and foundation. This will reduce the total construction cost accordingly.
   
   
3. Bigger Purlin Span:
   Due to its special forming type, the Open roofpro joist has a stronger rigidity in plane and reaches a much more longer clear span than the solid secondary beam with same steel consumption, braced out plane. The maximum clear span of the Open roofpro joist can be 20 meters by producing and 35 meters by designing.??
   
   
4. Bigger Load:
   Ensured by stronger rigidity in plane, the Open roofpro joist can bear bigger load under same span condition. Calculations indicate that one piece of 750mm high and 12m long Open roofpro joist can bear the line load of 2 tons/m within the deflection of 1/200.
   
   
5. Energy Saving:
   Less steel requires less energy. The more important is that only 7kw electricity consumption will be enough for one ton production of Open steel joist which greatly saves the resources and protects the environment.
   
   
6. Quick Erection:
   The every piece of Open steel joist will be assembled with bolts completely at site. Accurate processing size and simple form ensure a quick erection.
   
   
7. Stronger Systemeticness:
   The Open steel joist is specially designed for roof purlin and mezzanine joist. However, we would provide not only joist secondary beam but also a overall systematic approach including roof bracing and rod, floor steel deck and side formwork.?
   
   
8. Professional Design:
   The Open steel joist is designed by special software which is developed on the basis of Chinese Codes and in combination with the standard requirements of SJI(American Steel Joist Institute). Its performance has been verified through tests made by our engineers who have experiences of long time structure design of pre-engineer buildings and make a perfect job of the combination between joist secondary beam and main steel structure. All you need to do is to give us a call and we will make a considerable service for you then.
   
   
9. Quality Guarantee:
   We treat our products like our children who was born in bright, neat and quiet place and taken good care of. It will be also handled carefully during delivery.
   
   
10. Supply in Time:
    We devote ourselves to our products and pride of it. We are specialized in manufacturing steel joist and try our best to provide our clients with a prompt and excellent service. The month capacity of 1000 tons of steel joist can ensure your procurement needs.