mobile// 008615122904795 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.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. 2) Material: Mild Steel (Low Carbon Steel) or Stainless Steel 3) Surface Treatment: 4) Steel grating standards: 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           We are a professional company engaged in the design, production, installation, commissioning, maintenance and maintenance of various waterscape fountains.The fountain integrates sound, light and water to create a more unique, updated and beautiful cultural landscape.Our programmable fountain also has fast response and high sensitivity. Program Controlled Fountain,Computer Controlled Water Fountain,Large Outdoor Water Fountain,Remote Control Fountain Wuxi Jinshanghua Environmental Equipment Co., Ltd , https://www.jshfountain.com
1.Profile
Untreated, Painting ,Powder coated or Hot dip Galvanizing
A) China: YB/T4001-1998Â
B) USA: ANSI/NAAMM (MBG531-88)Â
C) UK: BS4592-1987Â
D) Australia: AS1657-1988Â
E) Japan: JJS
5.company file
Model NO.: T1 T2 T3 T4
Type: T1, T2, T3, T4
Installation: Bolted, Welded
Quality Certificate: ISO9001
Quality Standard: UK, Au, Ja, Euro
Surface Treatment: Mill Finish, Galvanized, Painted, PVC
Trademark: Jiuwang
Transport Package: Steel Belt
Specification: ISO9001
Origin: Hebei Anping
HS Code: 730890
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3.steel stair treads specification
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