- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 28 Feb 2020
Crimping is a way of joining two materials (usually metal pipes or sheet metals) by pressing them together using a force applied by a crimping tool. The resulting join is a crimp. There are numerous applications for crimping in construction including for central heating pipework, ductwork, rainwater pipes and electrical wiring.
Metal rainwater pipes or ducting pipes can be crimped together by crimping around the full circumference of one of the pipe ends. This acts to change the circular profile of the pipe into a wavy profile (forming a ‘male’ end) thereby reducing the pipe diameter to allow it to be inserted into the end of an uncrimped pipe (‘female’ end). Pushing the pipes together can be sufficient for joining some types of duct and rainwater pipes. Although the join will not usually be waterproof, it can be sufficient if the crimped pipe faces in the direction of the water flow.
Two lengths of copper water pipe may be crimped together quickly and effectively using a crimping tool and copper joining piece. The tool applies sufficient pressure to crimp the joining piece around the pipe ends to form a watertight seal. The process is beneficial as it can be faster, easier and less messy than traditional pipe soldering.
In making electrical connections, two wires can be securely joined together using male and female bullet connectors that have been crimped around their respective wires. Other applications include crimping to attach Cat 6 Ethernet plugs onto Ethernet cables and so on.
 Related articles on Designing Buildings Wiki
Featured articles and news
What future infrastructure provision might look like.
Highlighting the health benefits of home improvement.
Pavilions for music, entertainment, and leisure. Book review.
Broadening our understanding of Dublin’s chequered social history.
The charm of London's Cabmen's shelters.
Future Weather Files research tool looking for feedback.
Exploring the Colour Rendering Index.
Why it's important to find out what went wrong.
ECA reviews the shape of the construction job market.
Why proper room acoustics make a difference.
Initiative puts gas networks on the path to net zero.
WICE Woman Architectural Technologist of the Year 2019.
Traditional low-energy approaches to comfort.
Revisiting the McArthurGlen Designer Outlet in Ashford.
USA In-Use Version 6 is now available.
The rise of architectural barbarism.
In contentious political contexts heritage can be more fractious.