calder lifting

Lifting loops and sockets are used extensively in pre-cast concrete structure manufacturing and building industries or easier transportation and placement of structural components.

Designed for long life, lifting loops are manufactured from wire rope clinched firmly into an externally threaded (standard ISO/DIN metric round form thread) steel ferrule which mates, on application, with a permanently inserted steel socket of the same thread form and size.

The recommended Safe Working Load (wll) is normally a 5:1 standard of safety based on the wire rope minimum break loading, as per BS1290:1983. By arrangement, a 6:1 standard of safety can be offered on metric round form (Rd) type loops.All lifting loops are proof load tested to 2 x wll. A test certificate is issued which can be easily referenced by an attached identification tag.

Lifting Sockets (Cast-in)
These strong steel tubular sockets are supplied with a through hole below the thread to take a reinforcing bar, located and tied to the main reinforcement to provide a secure anchorage point in the concrete. Available in zinc-plated or stainless steel, each socket is provided with two plastic plug inserts for protection against ingress of concrete or damage to threads.

NOTE: Lifting loop and socket must be carefully matched to correct thread form and size. (M) metric ISO threads are not compatible on thread form with (Rd) metric round form threads. Plastic plugs can be obtained separately.