Tianjin Shunjinhua Machinery Manufacturing Co Ltd
+86-022-68900512
+86-022-68900512
+86-022-68900512
Description
The steel stair tread are produced by our company more than 20 years,they are exported to all over the world more than 10 years.All products have passed ISO9001&CE system certifications .There are all kinds of steel bar gratings .
The bar grating stair products specification
| Bearing bar (load bar)specification | the specification of the plain bar type andserrated bar type plain of bearing bars is 20x3-100x3 the specification of I-section type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc. | |
| the pitch of load bearing bars (mm) | 12.5,15, 20, 30, 30.6, 32.5, 34, 34.8, 35.3, 40, 60, 80…… | |
| the pitch of cross bars(mm) | 38.1, 50, 50.8, 70, 75, 80, 100, 101.6, 102…… |
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The standard of steel grating
| Grating standard | China | YB/T4001-1998(YB/T4001.1-2007) |
| Britain | BS4592-1:1995 | |
| American | ANSI/NAAMM(MBG531-93) | |
| Australia | AS1657-1992 | |
| Galvanized standard | China | GB/T13912-2002 |
| Britain | BS729 | |
| American | ASTM A123/A123M-97a | |
| Australia | AS1650 |
Types
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no anti-slip requirement for welding ladder stringers Characteristics the type of steel grating which pitch of bars is 30mm is used most widely for all sectors of industry. It has the greates resistance to surface inpact. |
anti-slip requirement for welding ladder stringers the type of steel grating which pitch of bars is 40mm is widely used in the industry field too. For the suitable interval of the bars so it always economical and weight-lightest.
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no anti-slip requirement for connecting with ladder bolt the type of steel grating which with pitch of bars is 60mm, cross bars pitch 50mm has been developed specially for mining industry and weight-lightest in all grating. In case of short spans they can meet a variety of uses.
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anti-slip requirement for connecting with ladder bolt 1>High strength and light structure 2>Powerful anti-corrosion,durable and long working life 3>Beautiful appearance,bright surface 4>No dirt-rain-snow deposit,automatic cleaning,easy maintenance 5>Good ventilation,day-lighting,heat-dispersing,resistant to sliding and explosion. 6>Easy installation and disassembly |
Process
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Hot-dip galvanizing plant the company has 1500square meters,with 8.5 meterslong X 1.6meters wide X deep 2 meters large zinc pot.has variety of species galvanized steel work pieces,steel grating/communications tower, a lighthouse ,sign posts,anchor chain ,highway guardrail ,ship fittings ,pipe and so on.
The features of hot-galvanizing Uniform plating coat with high surface finish.Adhesiveness and strong resistance to corrosion
Wide-Applications of Hot Galvanizing
Anti-corrosion treatment for iron tower of various power transmittinglines,steel-pipe towers,,communication iron towers,lamp posts and lamps, steel bar gratings,guard rails of highways,and all kinds of steel mambers,together with all kinds of metal surface
Advantage Light weight High strength Great load-bearing capacity Economic cost Ventilation and light admission Modern fashion and attractive appearance Non-slip and safety Easy cleaning and installation Durability |
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Application
Packing
+86-022-68900512 
152 kilometers of national highway 104, east side of gaogaolou village, jinghai town, jinghai district, Tianjin,China Tianjin Shunjinhua Machinery Manufacturing Co Ltd
