PRODUCTS

Description

A twist lock and corner casting together form a standardized rotating connector for securing shipping containers. The primary uses are for locking a container into place on container ship, semi-trailer truck or railway container train; and for lifting of the containers by container cranes and side lifters.

According to the operation modes，Twist lock can be divided into three types ：Manual type，semi-automatic type，automatic type.

Twislock type sheet

Table lists

Type	Automatic twistlock	Semi Automatic Twistlock			Manual Twist Lock
	Holland type	Normal	Large Base	Rail Interbox Connectors	Normal	Fixed Base	Breech Base	Dovetail	Truck Chassis Flat Bed	Rail Interbox Connectors
	Except	Our products cover

Mechanism

The female part of the connector is the 7×7×4 1⁄2 in (180×180×110 mm) corner casting, which is fitted to the container itself, and has no moving parts, only an oval hole in the bottom. The hole is an oval 4.9 in (124.5 mm) on the long axis with two flat sides 2.5 in (63.5 mm) apart. The male component is the twist lock, which is fitted to cranes and transport bases. This can be inserted through the hole (it is roughly 4.1 in or 104.1 mm long and 2.2 in or 55.9 mm wide), and then the top portion (normally pointed to make insertion easier) is rotated 90° so that it cannot be withdrawn. The mechanism is similar to that of a Kensington lock, but on a much larger scale. The maximum size and position of the holes in the connector is defined in international standard ISO 1161. The tensile strength of a twist lock is rated at either 20 or 25 tonnes.