Hollow-bar nails
Hollow bar nails consist of three main components: the pile head, the steel tension and/or compression member – including coupler and sacrificial drill bit – as well as the grout body. The tension and/or compression member is designed as a hollow bar with a cold-rolled continuous thread, allowing it to be cut or coupled at any required length.
Structure
Hollow bar nails consist of three main components:
Nail head
Steel tension member – including coupler and sacrificial drill bit
Grout body
The steel tension member is designed as a hollow bar with a cold-rolled continuous thread, allowing it to be cut or coupled at any required position.
Features
Nationally approved system with internal and external quality monitoring
Excellent adaptability to transport and installation conditions due to delivery in segments with coupler connections
A wide range of drill bits allows application in a variety of soil conditions
Easy on-site length adjustment, e.g. in varying geological conditions, by using segmented elements with coupler connections
Excellent bond between the SHS bar and cement grout due to the thread ribs
Optimal adaptation to required load capacities through a wide range of available cross-sections
Fast construction progress by drilling, installing and grouting the pile in a single operation
Structural variants
– Short-term nail (for temporary use)
– Short-term nail (service life up to 2 years)
– Permanent nail, hot-dip galvanised, allowing for a soil-dependent corrosion rate (service life up to 50 years)