Basic Info.
Model NO.
T1 T2 T3 T4
Bench
Single Stair
Type
Ordinary Stairs
Material
Metal
Usage
Outdoor
Stair Type
Straight Stair
Certificate
ISO 9001:2008
Surface
Hot DIP Galvanized
Price Term
EXW, Fob, CIF
Installation Type
Bolted Welded
Size
as Customer Need
Bearing Bar Type
Serrated, Plain and I Type
Transport Package
Steel Belts
Specification
253/30/100
Trademark
N/M
Origin
China
HS Code
7308900000
Production Capacity
250 Tons Per Week
Product Description
1. galvanized staircase metal
1. galvanized staircase metal
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.
2Stair Tread Types: galvanized staircase metal
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.
2) Material: Mild Steel (Low Carbon Steel) or Stainless Steel
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
| Item | Recommended maximum stair treads length (mm) | ||
| Bearing bar dimension mm | 25*3 | 25*5 | 32*5 |
| Bearing bar's pitch at 30 mm | 550 | 900 | 1300 |
| Bearing bar's pitch at 40 mm | 450 | 750 | 1200 |
| Item | Recommended stair treads width (mm) | ||||||
| T1/T2/T3/T4 Bearing bar pitch at 30mm | 95 | 125 | 155 | 185 | 215 | 245 | 275 |
| T1/T2 Bearing bar pitch at 40mm T3/T4 | 125 | 165 | 205 | 245 | 285 | ||
| 115 | 155 | 195 | 235 | 275 | |||
| Fixing hole center(mm) | 45 | 75 | 100 | 150 | |||
When specifying the steel ladders, pls refer to the national standard construction drawing
87J432. According to whether the nosings are to be used and the methods of mounting
to stringers, stair treads are classified into four types: T1, T2, T3, T4. We suggest that the
dimensions are as follow:
3. galvanized staircase metal 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 |
5.our company review
Hebei Jiuwang Metal Wire Mesh Co.,Ltd.(original Anping County Jintai Metal Mesh Co.,Ltd.).Established in 1992,our company is a manufacturer of large steel structure and steel gratings,integrating development,production and distribution.The company register capital is 10,080,000 Yuan,and take an area of 34,680 square meters.In 2003,we have got the ISO9001:2000 certification by BQR.
7.WHY CHOOSE OUR COMPANY
1.Own independent three press-welded steel grating machine and we have our own biggest galvanization product line in local market
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, robot welding machine,the grating quality get more perfect and price more competitive!
