Security Gates
Blast proof gates, bomb blast resistant gates and blast resistant doors for industrial, institutional and high security sites. Engineered to a stated specification, fabricated in our workshop and installed with the anchoring the design requires.
Rated Design
To Threat Level
Built In-House
Own Workshop
Nationwide
Supply & Install
Documented
Handover Records
The Challenge
Enquiries on this page are handled discreetly.
An ordinary sliding gate is built to keep out people and to look solid. Light section frame, sheet infill, wheels running in a floor channel, a post set in a modest concrete block.
Against a vehicle it does almost nothing. The gate leaf is not the weak point in that scenario. The posts and their foundations are, because stopping a moving vehicle means absorbing its energy and passing it into the ground. A post set in a small block simply leaves with the vehicle.
Painting a heavier gate does not change this. Section thickness without an engineered foundation is decoration.
Entry points are where a perimeter is deliberately weakest, because things have to pass through.
Protection there works in two layers. The first is approach speed. A vehicle that cannot build speed cannot deliver much energy, and layout does that work: offset approaches, chicanes, turns that force a slow entry. The second is the blocking element itself, which is the last line rather than the first.
Sites that get this wrong buy a heavy gate and leave a long straight run up to it.
What We Supply
This is the single most common specification error we see, and it is worth being clear about before anyone spends money.
Blast resistance means withstanding pressure from a detonation. It is about how a panel and its frame respond to a short, intense load arriving over the whole face.
Impact resistance means stopping a moving vehicle. It is about kinetic energy, foundations and anchoring.
They are different engineering problems with different test regimes, and a product proven in one is not automatically capable in the other.
Most enquiries described as “bomb gate” or “blast proof” turn out to be about a vehicle threat at an entrance. In that case the protection that matters is impact rating plus standoff distance, not panel thickness. Standoff does more than any gate can, because pressure falls away sharply with distance. Where a site can push its perimeter further out, that is usually the better investment.
Say which problem you are solving. If you do not know, a security consultant should produce a threat assessment before anyone quotes hardware.
How It Works
Three test standards are referenced internationally. ASTM F2656 is the North American method, PAS 68 the older British specification, and IWA 14-1 the international agreement published in 2013, since carried forward into ISO 22343-1.
Under ASTM F2656 the notation describes vehicle and speed. M30, M40 and M50 use a test vehicle of about 6,800 kilograms at roughly 48, 64 and 80 kilometres an hour, and a penetration class from P1 to P4 records how far the vehicle got past the barrier, with P1 being under one metre. The older K rating system, K4 through K12, still appears in government tenders, and K12 corresponds broadly to M50.
IWA 14-1 covers a wider range, with nine vehicle categories from about 1,500 to 30,000 kilograms and test speeds from 16 to 112 kilometres an hour.
The caution that matters. These ratings are not interchangeable. The standards measure penetration from different reference points, so a PAS 68 figure will look better than the equivalent ASTM number for the same physical test result. Comparing a number from one standard against a number from another will mislead you.
A rating means a physical crash test was carried out and documented. Writing “crash rated” in a specification without naming the standard and the required level is not a specification, and a supplier who cannot produce a test report has not got a rating.
We will tell you plainly whether an item we build has been tested or has been engineered to a design without a physical test certificate. Those are different things and you are entitled to know which you are buying.
Detail
Sliding and swing gates for vehicle entrances, with the leaf, the posts, the running gear and the foundation designed as one assembly.
Blast resistant doors and industrial blast doors for control rooms, substations, plant rooms and protected spaces inside a facility.
Security gates where the requirement is forced entry resistance rather than blast or vehicle impact.
Standards
Reinforced steel panels on a structural frame, heavy duty hinges or running gear sized for the leaf weight, locking mechanisms that engage into the frame rather than only at one edge, reinforcement plates at load points, sealing systems where they are called for, and steel anchors into a foundation designed for the reactions.
The anchoring and the foundation are the parts that decide performance. A gate is only as strong as what holds it to the ground.
Process
Refineries, petrochemical and chemical plants, gas processing, power generation, and industrial sites handling hazardous materials. Institutional and administrative buildings where a threat assessment calls for perimeter protection.
Facilities with classified areas often need explosion proof cranes for hazardous areas as well, and it is usually the same engineering team specifying both.
Detail
1. Threat and site assessment. Your assessment or your consultant’s, plus the approach geometry, available standoff and traffic requirement.
2. Specification. Gate or door type, operating method, and the performance requirement stated against a named standard where one applies.
3. Structural design. Leaf, frame, posts, anchoring and foundation reactions.
4. Fabrication. Built in our workshop.
5. Installation and anchoring. Foundations and fixings executed to the design, because this is where performance is won or lost.
6. Operation testing. Opening, closing, locking and any powered or manual override checked and handed over with records.
Site work falls under the Punjab Occupational Safety and Health Act 2019, and structural design against the Building Code of Pakistan.
Questions
In common use the phrase covers two different things: a gate designed to resist blast overpressure, and a gate designed to stop a vehicle. Most enquiries mean the second. Establish which you need first, because the engineering, the testing and the cost all differ.
Sites where a threat assessment identifies a credible vehicle or explosive threat at the perimeter or at an internal protected space. That is normally oil, gas, chemical, power and institutional facilities.
Sometimes, and the limiting factor is almost always the ground rather than the gate. Existing foundations were rarely built for impact reactions, so retrofitting usually means new foundations and posts even where the opening stays the same.
Yes. Blast resistant doors for control rooms, substations and protected internal spaces, alongside perimeter gates.
Manual, motorised sliding and swing arrangements, with the running gear and drive sized for the leaf weight. Heavy leaves need a manual override that a person can actually operate during a power failure.
Ask us and we will answer specifically for the item you are considering. A rating exists only where a physical test was performed and a report issued. We will not describe an untested item as rated, and we would advise you to treat any supplier who does with caution.
Next Step
Tell us the site type, the entrance geometry, the available standoff and whether you hold a threat assessment. We will discuss the requirement before proposing anything.
Related: steel fabrication services.
