STEEL GRATINGS & STAIR STEPS

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1 STEEL GRATINGS & STAIR STEPS Steel gratings and stair steps are resistant small weight holding building units with a long-term life-time used as stairs constructions, bridges and walk-ways used in building, light and heavy engineering, chemical, food and mine operations. In this time finds it s place in interiors and exteriors of modern architecture, landscape gardening and exhibition centres. Easy assembly as well as possible disassembly and easy change of particular gratings. Application Machine operating platforms in industrial and power production, crane and crane runway platforms, store management system - rack bottom boards and storage areas, covers of channels and skylights with walking use, fire protection pits in transformer stations, coverage of approach ramps including, unobstructed access ones, cleaning zones mats, staircases and staircase steps, separation barriers, sieves, drainage systems in chemistry and foodstuff industry (stainless steel gratings). Steel gratings types Pressed steel floor grating Welded steel floor grating Expanded metal steel floor gratings Materials Mild steel - raw (11.375) Galvanized steel (S235) Stainless steel (1.4301)

2 Preview of the most common meshes Pressed steel floor grating Format 33 x 33 mm Format 33 x 16 mm Format 33 x 11 mm Format 25 x 25 mm One-way anti-slip Two-way anti-slip Welded steel floor grating Format 34 x 38 mm Anti-slip Expanded metal steel floor gratings Format 47 x 13 mm Format 62 x 15 mm

3 Surface treatment Raw - without surface treatment Hot dip galvanizing Steel gratings Design is based on the CSN and the DIN standards. It s characterized by fillings rods pressed in high-pressure pressing machines into special shaped grooves with locks cut out the bearing rods of the grating. Vertical position and stability of the bearings rods are maintained by the filling ones enabling an advantageous and uniform displacement of loads over all the grating area. The grating edges are provided with border strips welded to the grating circumference. Grating length is the external grating dimension measured in the direction of the bearing rods (this applies even in the case that the grating length is shorter than the width thereof). Grating width - non-bearing grating width is the external grating dimension measured in the direction of the filling rods. Bearing rods are parallel grating chords supported on both ends and used to transmit the forces induced by the grating load. Filling rods are chords sized as a rule to 10 x 2 mm maintaining the vertical position and stability of the bearing rods. Mesh size is the axial distance between two adjacent bearing rods and two adjacent filling ones. Border band is a steel band used as a border and reinforcement of the peripheral grating area; as a rule, the cross-sectional area of the border band is identical with that of the bearing rod of the grating. Unidirectional Anti-Slip Arrangement Indentations cut out in filling rods creating an effective anti-slip grating arrangement. Ambidirectional Anti-Slip Arrangement Indentations cut out in filling as well as bearing rods creating a highly effective anti-slip grating arrangement. Bearing structure Supporting structure, as a rule steel or concrete construction, where gratings are anchored.

4 Cut outs Rectangular, oblique and/or bow-shaped apertures in grating structures cut out in accordance with the Customer drawing or sketch. Step sides made from flats and used to screw the step onto the staircase bearing structure (the string boards). Treading Section Front-side shaped reinforcement section with upper side provided with anti-slip arrangement, in particular with drawn perforation. Scarves, cut outs gratings for pipes and other It s needed to attach some drawing or design.

5 Examples of gratings fixing Fixing by clamps with shaped clips and screws electrogalvanized M8 with nuts It s possible, not recommended, to use welding for gratings fixing. Then it s necessary to remove zinc before the welding in case of galvanized gratings and use the zinc spray after the welding to cover it. Examples of construction fixing Detail of fixing by clamps Loading limit and direction

6 Table of capacity load of floor gratings Spacing of supporting profiles 25 mm

7 Table of capacity load of floor gratings Spacing of supporting profiles 33 mm

8 Stair steps Stair step is made up steel grating according to DIN 24537and treading section which is reinforced by special profile with anti-slip arrangement. Stair steps are fixed into staircase structure on step sides made from flats by 2 x 2 screws M12.

9 Gratings and stair steps stock items Gratings stock items Mesh size 33 x 33 mm, bearing rod 30 x 2 mm Surface treatment hot dip galvanizing Stair steps stock items Mesh size 33 x 33 mm, bearing rod 30 x 2 mm Surface treatment hot dip galvanizing length x width l x s (mm) mass (kg) length x width l x s (mm) 400 x ,7 600 x 240 4,9 500 x ,9 600 x 270 5,4 600 x x 240 6,1 700 x ,2 800 x 270 6,7 800 x , x 240 7,3 900 x , x 270 8, x , x , x , x 1000 raw 21,7 - - mass (kg) Note: All weights stated in table below are without any surface treatment. PERFO LINEA strengths PERSONAL APPROACH TO EACH CUSTOMER Fast friendly communication, respect for your requirements and a professional approach CONSULTANCY SERVICE Professional consultancy, task and problem solving HIGH QUALITY PRODUCTS In accordance with all valid norms, regular maintenance established for new machine and equipment tools, tried and tested production processes and output control WIDE ASSORTMENT Perforated metal sheets, expanded metal, steel gratings and step panels, wire mesh, conveyor belts and other perforated products CUSTOM MANUFACTURING We can provide a solution for your requirements, also implementing atypical designs SPEED OF MANUFACTURING We can meet the deadline you require on the basis of mutual agreement TRANSPORT We can deliver in-stock items and finished orders within 24 hours anywhere in the Czech Republic. Express transportation can be arranged if necessary