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Rolled Edge
Semi Rigid Steel Guide Posts
ROBUST DELINEATION, CAN BE RESTRAIGHTENED MANY TIMES

Rolled Edge Semi Rigid Steel Guide Posts bend safely on impact and can be re-straightened many times. They are available in a wide range of lengths and colours with roadside delineation or asset identification stickers or plates fitted or supplied to suit your needs. Robust and recyclable, the Delnorth Rolled Edge Semi Rigid Steel Guide Post is easy to install using either our universal ergonomic manual or mechanical drivers. All posts come with protective snap-on end caps.
Rolled Edge Semi Rigid Steel Guide Posts
Rolled Edge Guide Posts are designed for maximum durability and safety, featuring a unique rolled safety edge profile powder coated to 1.6mm thickness.
Used across major highways, rural roads, and high-traffic areas where safety and durability are paramount.
Delnorth Semi-Rigid Steel guide and marker posts are supported by our 10 year manufacturers warranty.
SEMI RIGID ROLLED EDGE GUIDE POSTS & ROAD EDGE DELINEATION POST PRODUCTS.
This is just an example of product SKU
ROLLED EDGE G450 HIGH TENSILE Z350 GALVANISED STEEL GUIDE POSTS
These posts bend safely on impact and can be re-straightened many times. They are available in a wide range of lengths and colours with roadside delineation or asset identification stickers or plates fitted or supplied to suit your needs. Robust and recyclable, the one piece Delnorth Semi Rigid Steel Guide Post range is easy to install using either our universal ergonomic manual or mechanical drivers. All posts come with protective snap-on end caps.
TECHNICAL SPECIFICATIONS
Delnorth Steel-Flex ® is a patented flexible steel delineator post. Steel-Flex may be driven into the ground or road base using a Delnorth designed manual or mechanical driving device. Steel-Flex ® is capable of withstanding repeated impacts and wheel overs by vehicles with minimal damage to the post or vehicle. Steel-Flex ® roadside delineator posts comply with:
British & European Standard E N 12899 – 3:2008 & Australian Standard AS 1742.2 and AS/NZ 1906.1
Steel-Flex ® can retain a minimum of 75% of colour, appearance and physical properties for 10 years even when exposed to extreme weather conditions. They are fire resistant and the powder coating can withstand temperatures of up to 140°C.
Steel-Flex ® flexible steel delineator posts stand vertical when installed. Testing has shown that the post will not deflect more than 35mm when subjected to wind speeds of 45m / sec. (162 kph) on the front face (convex surface) of the post.
The load required to bend each post length of 1000mm long to an angle of 90° should not be less than 30N. It only requires 5kg pressure to bend a Steel-Flex ® post.
Steel-Flex guide posts return to vertical automatically after repeated vehicle impacts. They have been tested to 10 impacts from a passenger type vehicle at 100 kph without compromising the integrity of the post. It has been tested to ten wheel over’s at 50kph from a fully laden 42 tonne truck without compromising the integrity of the post.
Tested to withstand extreme temperatures (-10°C to +60°C), Steel-Flex is non flammable, salt spray, and fire resistant and has been tested to comply with the following standards:
Impact Resistance (ASTM D – 2794) Adhesion (ISO 2815) 2000 hr Salt Spray (ASTM B – 117)
All faces of the Steel-Flex ® delineator posts are a smooth gloss white powder coat finish to a minimum thickness of 70 microns over a ArmorGalv ® thermal diffusion anti-corrosive protective coating.
The manufacturer’s name and the month/year date of manufacture with minimum 1 cm high characters, are applied to the concave surface of the post. The recommended installation depth is marked by a 12mm diameter hole punched into the post 40cm from the lower pointed edge. Reflective sheeting is applied to conform with the relevant specifications.
One piece Steel-Flex ® delineator posts are driven into the ground or road base to a minimum depth of 400mm. Dual retention barbs assist to provide post stability, correct alignment and resistance to unlawful removal by hand. Testing has shown that when installed correctly in average ground conditions, there is a force of over 500kg required to remove the post from the ground.
To maximise the life of the post, it is recommended that a small V shape divot approximately 100mm deep x 100mm long x 105 mm wide, be removed to provide a bend radius when there is a direct wheel-over by a vehicle. This void may be filled with sand if required. Installation instruction sheets are included.
Steel-Flex posts can be fitted with all available types of Guide Post delineators and Marker Post stickers complying with AS 1906.1. The posts can be driven in with delineators or stickers attached.
Tested to meet the highest standards of road safety, Steel-flex has conducted the following test:
- Steel-Flex ® posts have been test conditioned for 2 hours at temperature extremes of -10°C and +60°C
- Heat Resistance Test – Result of Steel-Flex ® Heat Resistant Test = Pass (1 second each bend)
- Cold Resistance test – Result of Steel-Flex ® Cold Resistant Test = Pass (1 second each bend)
- The Steel-Flex ® post has been conditioned for 2 hours at -10°C with no signs of splitting or fracturing when a steel ball at 1kg was dropped from a height of 1500mm.
- STEEL BALL TEST- Result of Steel-Flex ® Steel Ball Test = Pass (1 second each bend)
FEATURES
- Rolled Edge Design: The smooth, rounded guide post edges enhance safety for road users and maintenance crews.
- Semi-rigid Steel Construction: Built from high-quality, heavy-duty steel, these posts provide the rigidity needed for effective delineation while still offering some flexibility under impact.
- Corrosion Resistant: Hot-dip galvanised finish protects against rust and corrosion, ensuring longevity, even in harsh Australian conditions.
- High Visibility: Available with highly reflective Class 1A delineators for superior night-time and low-light performance.
- Easy Installation: Pre-punched holes and a lightweight design make installation quick and easy, minimising downtime on site.
- Versatile Application: Suitable for highways, regional roads, and areas where robust, long-lasting delineation is required.