steel roof construction structures
Who Are We ?
Thank you for your interest in Henan CangLong Steel Structures co,.ltd , We are a family owned business and have been in operation since 2007, who is specializing in post frame steel buildings. Our individually engineered permanent structures are the best choice for customers requiring speed of construction and economy coupled with aesthetic value. Our buildings are ideal for residential, commercial , agricultural ,industrial and chemical factories ,warehouses & stores , hospitals & clinics,multi-storey buildings , supermarkets ..
Why is CangLong Steel Structures the Right Choice?
Your investment is an important decision and should be realized through a financially stable company. Our deep community roots and stout economic strength gives us an exceptional advantage in hiring experienced professionals who will complete your project to your expectations.
The Edge
Competitive Prices Our production capacity (approximately 20000 metric tons annually) together with effective
and economic
engineering and manufacturing methods enable us to offer the most competitive prices in the industry.
Fast Quotations
Quotations for simple buildings can be submitted quickly due to vast experience of our staff and the advanced
software we use.
Fast Delivery
(1)We are able to design, detail, fabricate and supply simple buildings in approximately 4 weeks.
(2)Most of our buildings are delivered and erected within 8 weeks (this relies on various factors such as stock
position, weather etc).
Site Supervision
(1)A site supervisor is always present at site to ensure that work is being carried out satisfactorily.
(2)Any problems that arise are quickly dealt with to minimise any delays.
(3)Safety on site is also made a priority.
1. Strictly control the welding position of the relative position of size , welding pass behind the prospective;
2. Reasonablly selection of welding parameters and order to prevent crack;
3. Electrode required drying, welding area need to clean up, welding process, together with the appropriate welding current, decrease of welding speed, gas completely escape , prevent the formation of weld porosity;
4. When continuously multi-layer welding, each weld layer after cleaning, prevent the formation of slag;
5. Selection for current, avoid arc pull too long, control electrode angle and arc method, avoid the generation of undercut.
Attached: welding process parameters
welding process parameters
Materals(mm) | Electrode diameter (mm) | Welding current(A) | Welding voltage(V) | Welding speed(m/min) |
<10 | Ø3.2 | 200-250 | 30-38 | 0.2-0.3 |
10-20 | Ø4.0 | 200-250 | 30-38 | 0.15-0.25 |
>30 | Ø4.0 | 320-350 | 30-38 | 0.3-0.5 |
"Steel Design Code" (GB50017-2003)
"Cold-formed steel structure technical specifications" (GB50018-2002)
"Construction Quality Acceptance of Steel" (GB50205-2001)
"Technical Specification for welded steel structure" (JGJ81-2002, J218-2002)
"Technical Specification for Steel Structures of Tall Buildings" (JGJ99-9)
We often use Ultrasonic detector ,X-ray detector , Paint film thickness gauge to check steel frame .
1.Steel structure welding requirements
Engaged in welding of steel structure work welders must pass the examination and obtain a certificate. The holder welder must welding in its passing the examination and approval within the scope of the project.
2.Fastener connection requirements
Steel structure fabrication and installation of units should be in accordance with the provisions of the high strength bolts respectively connected with friction surface of the anti slip coefficient test and retest, component friction surface site should be dealt with separately anti slip coefficient test, the results should be consistent with design requirements.
3.Steel structure assembly and installation of steel structure requirements
(1) of H type steel welding seam splicing spacing and the web of the seam shall not be less than 200 mm.
(2) and crane beam crane truss installation in place should not be deflection.
(3) multi section column installation, each column positioning ground control axis should lead directly, not from the axis of lower column guide, avoid too large error accumulation.
(4) the steel grid structure after the completion of the total spell and roofing project should be finished respectively to measure the deflection, the deflection and the measured value of 1.15 times can't exceed the design value.
(5) coating, coating times, coating thickness shall comply with the design requirements.
(6) the thickness of coating coated thin type fireproof coating shall conform to the requirements of design about the fireproof limit.
4.Electric single girder crane technical parameters
LD - type A electric single girder bridge crane and CD1, MD1 type electric hoist necessary use, become a light rail running a small crane.
This product is a general purpose crane, for mechanical manufacturing, assembly workshop and warehouse and other places.
As with Motor Grab spreader, is handling and transportation of bulk goods. This product is suitable for lifting weight 1, 2, 3, 5, 10 tons, 22.5 meters span 7.5-.
The crane control mode with the ground (divided into wired and wireless two), control room control, for users to select.
This product is not flammable, explosive in the medium or large humidity with acid, alkali gases places of work, is not suitable for lifting and transporting molten metal, toxic and flammable work.
This product series is a series of products of electric single girder crane adopts the international advanced standard manufacturing. The machine has the advantages of novel structure, good technology, operation is flexible and stable, safe and reliable.
1.Dimension :Length , width, height, eave height , roof pitch .
2.Doors and windows :dimension , quantity , where to put them.
3.Local climate : Wind speed , snow load ,etc
4.insulation material :sandwich panel or steel sheet
5.Crane beam :Do you need crane beam &tons? inside the steel structure or outside ?
6.Is there any materials that are not allowed to imported into the country where the structure is planning to use ?
7.What is the founctions of the workshop? we must consider the wind and lighting inside.
Thanks for your carefully checking to our company products !!
Welcome you to viist our company produce ability and qulity ,We would like to received your inquiry !!
thanks my dear~