In the 1980s, the young DUOWEI Company has achieved professional advantages in the field of
building metal profiled plates, and thenceforward it rapidly grew into an integrated enterprise group
combining with design, manufacturing, construction, services and international trade. It is the main provider and market leader of steel structure and new construction boards in China. DUOWEl currently has 16 branches and 10 manufacturing plants respectively in Beijing, Tianjin, Hebei, Shenyang, Harbin, Baotou and Urumqi, whose products have been exported to over 40 countries and regions around the world.
Today, DUOWEI has grown as an enterprise with such honors as Famous Trademark of China,
the Best General Service Provider of Steel Structure Building System of China, the Leader of
China's New Energy-efficient Construction Board Industry, China’s Top 30 Construction Enterprises in the Steel Structure Industry, the High and New Technology
Enterprises in Beijing, the High and New Technology Enterprises in Zhongguancun. DUOWEI is
the main co-compiler of 16 national standards and industrial standards, and possesses the National
Qualification of Class A in Architectural General Design, the Qualification of Grade A in Steel
Structure Engineering Special Design, the Special-grade Qualification of Steel Structure Manufacturing, the Qualification of Class A in Professional
Contracting for Steel Structure Projects and the certificate of ISO 9001: 2008 International Quality
Management System Certification.
DUOWEI benefits its cooperative partners continuously, like the building owners and investors,
with exquisite technologies, high-quality products and differentiated services. DUOWEI steel structure products featured in high-rise steel structure, space steel structure, heavy frame steel structure and light steel structure,
has reached to 250 thousand tons in annual production; the annual production capacity of
DUOWEI polyurethane energy-saving sandwich boards, new fireproof rock wool/glass fiber cotton sandwich boards has reached
to 3 million square meters;The annual production capacity of DUOWEI adjustable steel truss floor support plates and closed
composite slabs is 5 million square meters; and the annual production capacity of DUOWEI
colorful profiled steel plates has reached to 30 million square meters.
Decking sheet :
Truss floor decking
Duowei decking sheet products introduce:
1.Strong friction and shear performance
The closed-type floor decking sheet uses special closed rib design and its vertical shear
performance is good . Under the limitation allowance of the truss floor deck’s design loads,steel deck and concrete don’t slip off each other.
2.Perfect fire-resistant performance
Rib is completely encased in concrete,similar t reinforcing steel bars in the
concrete slab which is site pouring.The closed-type composite slab can completely substitute the sagging moment reinforcing
steel bars for pulling in the floor and can be up to 1.5 hours of fire-retardant coating .
3.Excellent floor decking sheet section
The closed-type composite slab has greater effective height,during the stage of use,it can
provide greater resistance to sagging moment.
4.Slot-tye suspension system at the end of sheet
It is for the installation of ceiling,hung ceiling,water and electricity pipe,etc,
without drilling,welding,during the stage of using,it can be moved,removed and
reinstalled as needed.
5.East and fast to construct
It does not require any plug at the end ,and there is no leakage of plasma
phenomena,it can shorten the construction period.
6.Flat appearance f the end of sheet
The end of slab is flat and beautiful for the building which don’t want ceiling.
7.Effectively reduce the height of the sheet
According to the requirement of fire safety and anti-tremor,the total thickness of the closed-type corrugated floor decking sheet is only 110-130mm,30-40mm less than the open-type,so it reduces the weight and cost and add the net height.
The closed-type pressure plate can substitute the sagging moment reinforcing steel bars
at the end of sheet,and there is no need to paint any fire-retardant coating,it reduces the steel amount and then lowers the cost.
In general, for steel structure , we use the steel frame packing to keep goods
not to be broken . For sandwich panel and color steel sheet, we use the
plastic packing .
If the clients need special packing will according to their requirements.
the DUOWEI Union Group has been making successes in serving PetroChina, Aerospace China,
China Nuclear Power, China FAW, China Guodian, China CNR, China Coal and other super large
enterprises, and participating in national key projects, such as Hexie locomotive, National Grand
Rocket, National Large Aircraft, Aerospace Coal Gasification, etc., and the group will continuously
provide customers with innovative products and high-quality engineering services.
In the oversea project, such as Mongolia, Russia, Africa, Iraq, Spain, Brazil, Ye men, Sri Lanka,
Chile, Ghana,Algeria,Sudan,Italy Bracket,Kazakhstan, Senegal,Ukraine,Columbia,Namibia,Niger,
Tajikistan,Thailand,Burma ,Australia,Sweden and so on .