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China Professional Manufacture External Galvanised Steel Staircase

China Professional Manufacture External Galvanised Steel Staircase, Find details about China External Galvanised Steel Staircase, Outdoor Spiral Staircase from China Professional Manufacture External Galvanised Steel Staircase

Model NO.
T1 T2 T3 T4
Surface Treatment
Mill Finish, Galvanized, Painted, PVC
Trademark
Jiuwang
Transport Package
Steel Belt
Specification
ISO9001
Origin
Hebei Anping
HS Code
730890
Model NO.
T1 T2 T3 T4
Surface Treatment
Mill Finish, Galvanized, Painted, PVC
Trademark
Jiuwang
Transport Package
Steel Belt
Specification
ISO9001
Origin
Hebei Anping
HS Code
730890
 
1.Profile
We manufacture different styles of stair ladders that used in family,industry and construction. 
Material: mill steel black and hot dip Galvanizing / and stainless grating
Usage: ladder, flooring walkway, platform ,steel structures, stair tread, well cover, trench cover, sump cover,compound gratings, storage shelves,fences and handrail so on for construction project, oil project, seaport, power plant, water plant, defense project, chemical factory and so on.
 China Professional Manufacture External Galvanised Steel Staircase
2.steel stair treads type.
 
1)There are four kinds of stair treads T1,T2,T3,T4.
    T1         Welded fixing and Without nosing
    T2         Bolted fixing and without nosing,easy to installation and teardown.
    T3         Welded fixing and with checkered plate nosing, can be skid.
    T4         Bolted fxing and with checkered plate nosing, easy be installation,
                 teardown and can be skid.
China Professional Manufacture External Galvanised Steel Staircase
2) Material: Mild Steel (Low Carbon Steel) or Stainless Steel
3) Surface Treatment: 
Untreated, Painting ,Powder coated or Hot dip Galvanizing
4) Steel grating standards: 
A) China: YB/T4001-1998 
B) USA: ANSI/NAAMM (MBG531-88) 
C) UK: BS4592-1987 
D) Australia: AS1657-1988 
E) Japan: JJS
 
3.steel stair treads specification

Pitch of Bearing bar
Cross-bar Pitch
Specification of bearing bar load(width×thickness)

32×5
40×5
45×5
50×5
55×5
60×5

  30
100
G325/30/100
G405/30/100
G455/30/100
G505/30/100
G555/30/100
G605/30/100

50
G325/30/50
G405/30/50
G455/30/50
G505/30/50
G555/30/50
G605/30/50

  40
100
G325/40/100
G405/40/100
G455/40/100
G505/40/100
G555/40/100
G605/40/100

50
G325/40/50
G405/40/50
G455/40/50
G505/40/50
G555/40/50
G605/40/50

60
50
G325/60/50
G405/60/50
G455/60/50
G505/60/50
G555/60/50
G605/60/50

 
Max. Stair treads lengths
 

Steel grating specification
Bearing bar size
25*3
25*5
32*5

Bearing bar pitch30mm
550
900
1300

Bearing bar pitch 40mm
450
750
1200

 
Recommend stair tread widths
 

T1,T2,T3,T4
Bearing bar pitch 30mm
95
125
155
185
215
245
275

T1,T2,T3,T4
Bearing bar pitch 40mm
 
125
165
 
205
245
285

 
115
155
 
195
235
275

Fixing hole centers
45
75
100
150

 
Note:bearing bar thickness 5mm
 4.steel stair treads introduction  
   
Recommend stair tread widths
 

T1,T2,T3,T4
Bearing bar pitch 30mm
95
125
155
185
215
245
275

T1,T2,T3,T4
Bearing bar pitch 40mm
 
125
165
 
205
245
285

 
115
155
 
195
235
275

Fixing hole centers
45
75
100
150

 
Note:bearing bar thickness 5mm
 4.steel stair treads introduction  
 
 
China Professional Manufacture External Galvanised Steel Staircasewhy choose us?
 

1.Own independent three press-welded steel grating machine and we have our own biggest galvanization product line in local market for 20 years experience.
2.profession design and drawing teams customize based on customers'requirement 

3.ISO9001 Certificate 

4.Located in Anping wire mesh base Hebei province,near from Beijing airport,Tianjin sea Port! 5.Now we adopted automatic bending machine,automatic robot welding machine,the grating quality get more perfect and price more competitive! 

 
 
 
 
 

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