Building Material Galvanized Welded Fixing Stair Tread

• After-sales Service: 2 Years
• Warranty: 2 Years
• Model No.: 325/30/100, 305/30/50, 255/30/100, 253/30/100...
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: T3
• Certificate: ISO9001:2008
• Shape: Square/Other Shape
• Standard Size: 20ft by 3ft
• Surface Treatment: Hot-Dipped Galvanized, Painted, Untreated
• Bearing Bar Dimension: 20*3 to 100*8mm, Various Dimension
• Bearing Bar Pitch: 20-100mm
• Cross Bar Pitch: 30-100mm
• Bearing Bar Type: Plain/Serrated/I Type
• Transport Package: Steel Belts
• Specification: Q235
• Trademark: JW
• Origin: Hebei Anping
• HS Code: 7308900000
• Production Capacity: 10000 Ton/Year
• Package Size: 100.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 1000.000kg

Product Description

Our company produces steel ladders with guardrail, which are made of grating treads.
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 s
tringers, stair treads are classified into four types: T1, T2, T3, T4. We suggest that the
dimensions are as follow:

 

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