Steel grating

for stair treadsfor walkwaysfor industrial flooring

Product information
This press-welded grating is engineered for offshore oil and gas platforms. The design meets the requirement that a 15 mm test ball must not pass through the grating. An intermediate round bar is welded centrally and parallel to the bearing bars to the underside of the twisted square cross bars using automatic resistance welding, providing enhanced structural stability under heavy offshore loads.

Technical data
Common mesh spacing
Bearing bar | Cross bar
34.30 | 101.6
38.28 | 101.6

Standard bearing bar profiles
Bearing bar 3 mm | Bearing bar 5 mm
25/3 | 25/5
30/3 | 30/5
35/3 | 35/5
40/3 | 40/5
45/3 | 45/5
50/3 | 50/5
60/3 | 60/5

Accessories / Fixing clips

• Welded-in holed fixing plates: Welded-in perforated plate; hole pattern to customer specification; fasteners supplied by customer.
• Double clamp B: Two saddle-top clips, clamp lower part, 2 hexagon screws and 2 square nuts.
• Grating heald bolt fastener: Head bolts with retaining flange; for highly corrosive environments (e.g. offshore) available as X-BT; pre-mounted version X-GR RU.
• Grating butt joint: Consists of top and base with thread and Allen screw.
• Hilti clamp: Saddle top clip and lower part connected; high vibration resistance, single-person installation for reduced assembly time.
• Clamp B: Saddle top clip, clamp lower part, M8x60 hexagon screws and M8 square nut.
• Clamp B 10: Stirrup top clip, hexagon socket screw, clip lower part and nut.
• Clamp S: Flat head screw, clamp lower part and square nut.
• Safety clamp A: Safety upper part, clamp lower part, hexagon screw and square nut.
• Safety clamp D: Safety upper part, clamp lower part, hexagon screw and square nut.

Characteristics / technical specifications

• Application: Offshore oil and gas platforms requiring high structural integrity.
• Safety requirement: Designed to prevent passage of a 15 mm test ball.
• Construction: Intermediate round bar welded centrally between bearing bars to underside of twisted square cross bars by automatic resistance welding.
• Benefit: Increased stability and load distribution in harsh offshore conditions.
• Common mesh spacing options: 34.30 x 101.6 and 38.28 x 101.6 (bearing bar x cross bar).
• Standard bearing bar profiles available: 25/3, 30/3, 35/3, 40/3, 45/3, 50/3, 60/3 and corresponding 25/5–60/5 for 5 mm bearing bars.
• Multiple fixing and accessory options to suit corrosion levels and installation methods (see accessory list).