Door Strikes

Ball Door Strike

Door strikes are fitted to the door jamb to provide a secure position for the latch and deadbolt to seat when the door is closed and locked.

Lock forends are fitted to the thickness/depth of the door to finish the lock case with a decorative plate.

They are commonly supplied with the lock however there is often requirement for modified versions for site specific problems. Constant Engineering can manufacture in small and large volume strikes and forends to virtually any specification.

Product Description


The majority of all handled doors will require a door strike plate and lock forend. Without one the door jamb can wear quickly, and result in unrepairable damage. Wood will not provide a secure home for the lock and wear and tear to the jamb will quickly take place.


Typically door strikes are made from 1.2/1.5mm thick materials, however, depending on the application and installation you may require a different material and thickness. Here’s our range of materials:

Satin anodised aluminium 1.2 1.5 3.0
Polished anodised aluminium 1.5 3.0
Polished brass 1.2 1.5 3.0
PVD brass effect 1.5
Satin stainless steel G304 1.2 1.5 2.0 3.0
Satin stainless steel G430 1.2 1.5
Satin stainless steel G316 1.2 1.5
Polished stainless steel G304 1.2 1.5 2.0 3.0
Polished stainless steel G430 1.2 1.5
HIPS (Plastic) 2.0 3.0
IBMA 1.2 1.5
Powder coated (mild steel) 1.2 1.5 2.0 3.0
Powder coated (aluminium) 1.2 1.5 3.0
Chequer plate 2mm, including tread at 3mm

Size and shapes

Constant Engineering have design and manufactured hundreds of styles, shapes and designs of door strikes to fit even the most complicated applications.

Corner options

Corner Options

  1. Radius
  2. Square
  3. Bespoke on request

Fitting options

Mounting Options

  1. Blank
  2. Self adhesive
  3. Countersunk holes with screws
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