Direct Factory Hot DIP Galvanized Spiral Steel Stair Treads Grating

• Customization: Available
• After-sales Service: Any Time
• Warranty: Any Time
• Model NO.: T1 T2 T3 T4
• Certification: ISO
• Application: Steel Structure Walkway, Foot Pedal, Drain Cover
• Shape: Flat Shape
• Manufacturing Method: Machine Welding
• Material: Carbon Steel
• Product Name: Galvanized Grating
• Origin of Place: China Hebei
• Surface Treatment: Hot DIP Galvanization
• Bearing Bar Type: Flat Bar, Serrated Bar, I Type
• Certificate: ISO9001
• Manufacturer Type: Welded
• Ended Type: Closed Open
• Dimension Size: 1m*6m 1m*5.8m
• Trade Type: OEM Manufacturer
• Transport Package: Steel Belt
• Specification: G325/40/100
• Trademark: Jiuwang
• Origin: Hebei Anping
• HS Code: 7308900000
• Production Capacity: 100000

Product Description

 
1.  spiral steel stair grating
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.

2. spiral steel stair grating  type.

1)There are six kinds of steel grating stair  T1,T2,T3,T4.T5,T6
    T1         Welded fixing and Without nosing
    T2         Bolted fixing and without nosing,easy to installation and dismantle
    T3         Welded fixing and with checkered plate nosing, can be anti-skid.
    T4         Bolted fxing and with checkered plate nosing,  can be anti-skid ,easy be installation,
    T5        Welded fixing and with striped plate nosing, can be anti-skid.
    T6         Bolted fixing and with striped plate nosing, can be anti-skid.

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. spiral steel stair grating   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

Product Details
No.	Terms	Description
1	Material	Low carbon,middle carbon,stainless steel
2.	Material standard	GB700-88,ASTM(A36),BS4360(43A),AS3679
3.	Bearing bar size	20*3,20*5,25*3,25*5,32*3,32*5,35*3,35*5, 40*3,40*5,45*5,50*3,50*5,55*5,60*5,65*5mm etc,
4.	Bearing bar pitch	15,20,25,30,33,35,38,40,50,60,80,90mm
5.	Cross bar pitch	24-200mm
6.	Surface treatment	Hot dipped galvanized,painted,self-color,
7.	Grating standard	YB/T4001.1-2007,ANSI/NAAMM(MBG531-88), BS4592-1987,AS1657-1985
8.	Bearing bar type	F,I ,S,IS type
9.	Application	Floor walkway,industrial platform,stair tread,metal ceiling,trench cover,barrier fencing
10.	Feature	Fine appearance,anti-corrosive,simple installation,light weight,high load,anti-skid, prevent dirt deposition,ventilation,anti-explosion
11.	Payment terms	TT,L/C
12.	Package	Pallets in containers packed by steel strap and worthy sea shipping, or according to the customers' requirements
13.	Product capacity	10days for a 20"

Bearing bar type	Flat bar	I bar	Serrated bar
Cross bar type	Twisted bar	Round bar	flat bar
Production process	welded	Pressure locked
Surface treatment	Self-colour	Galvanized	painted
application	Platform	walkway&floor	Trench cover	Steel stair treads
	Suspended ceiling	Barrier fence

4.steel grating standard--  steel platform grating

Steel Grating  Standard
	Steel Grating Standard	Steel Standard	Galvanizing Standard
China Standard	YB/T 4001.1-2007	GB700-88	GB/T13912-2002
USA Standard	ANSI/NAAMM (MBG531)	ASTM (A36)	ASTM (A123)
U.K. Standard	BS4592	BS4360 (43A)	BS729
Australia Standard	AS1657	AS3679	AS1650
Deutsche Standard	DIN24537	DIN17100-80	DIN50976

5.steel grating manufacture process



6.our company profile
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.CHOOSE US BECAUSE WE HAVE
1.Independent automatic steel grating product line with huge workshop and devices to ensure delivery time.
2. Over 20 years' experience in hot-dipped galvanized steel grating manufacture
3. Quality guarantee under the control of ISO9001 2000 quality system
4.Professional technology and design teams, chart as customers' requirements.