weathering tcbWeathering Steel TCBs from Tension Control Bolts Ltd are:

  • Property class 10.9/10
  • Manufactured in accordance with EN 14399-10
  • Available in M24 and M30 diameter in multiple lengths
  • Meet the requirements for weather resistant assemblies in accordance with EN 1090-2 section 5.6.

Tension Control Bolts Ltd are the largest stockist of property class 10.9 Weathering Steel TCBs globally. If you are at the design stage of connections please align to M24 and M30 as these diameters are carried as stock items.

weathering pictureWeathering refers to the chemical composition of these steels (also referred to as COR-TEN steels) allowing them to exhibit increased resistance to atmospheric corrosion. This is because the steel forms a sacrificial protective layer on its surface when exposed to the elements and therefore the requirement for maintenance is reduced. In other words, the steel surface is allowed to rust in order to form the protective coating.

Though occasionally used in high rise and sculptures, Weathering Steel TCBs are most commonly specified in the bridge market.

To request a quote or for more information about our products, please contact us.

Greenkote® anti-corrosion protection

Tension Control Bolts Ltd has its own metal coating plant producing an environmentally friendly process called Greenkote® which is comparable to galvanising, although it is harder wearing and readily accepts all paint systems. Learn More.