DNV Certified Master Links

Engineered to Excellence

The Master Links have been engineered to be resistant towards environmental hydrogen embrittlement failures which is always a risk due to the corrosive environment present at sea. High quality steel that is homogeneous with favorable microstructure, small grain size and low amount of impurities is being used in order to produce this high end component. In addition the hardness of the Master Links is below 38 on the Rockwell C scale giving high impact strength even at low operating temperatures (≥ 27J at -40 °C in the weld) and increased resistance towards hydrogen embrittlement failures in an offshore environment.

100% Proof Loading

All lifts require reliable products with the highest safety to ensure a safe working environment as well as to protect the load. Gunnebo Industries perform rigorous testing in their factories before the product is released. Every single one of the components are proof loaded 2.5 times their working load limit and visually inspected by competent personnel. This is done without exception to guarantee highest quality and safety for the end user. To make the master links as suitable as possible for the harsh marine environment, an additional stress relieving heat treatment is performed before the master link is delivered to the end user. This is executed in order to remove stresses that might have formed during the proof loading, which could decrease the life length of the product.

Improved Working Load Limits

The Arctic Offshore Master Links comes in an optimized range where each Master Link will have a wider and higher working load limit span than the old range. This makes it easier from a purchasing point of view, as well as decreasing the risk of incorrect use. A table for the container ratings and recommended master links can be found at the back of this leaflet.

Design Temperature -40 °C

The Arctic Offshore Master Links are highly suitable to withstand shock loads and fatigue, even in extremely cold conditions. The new master link range has a design temperature of -40 °C, making it suitable for even the harshest weather conditions such as in the North Sea.