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The problem of linear expansion in long and straight runs of large diameter pipework, such as oil tankers, is one to which Brockington and Scott Ltd. 0f Llandeilo, Carmarthenshire have brought specialist attention. They produce bellows expansion pieces in metal with bores from 15” up to 100”, and at present are carrying out experimental development work on bellows 19” bore made from 0.7mm thick FERRALIUM 255 (UNS S32550, Alloy 255, DIN 1.4507, ASTM F61) super duplex stainless steel plate because of its excellent resistance to corrosion, heat and fatigue stress and its ductility.
Brockington & Scott report that no difficulty has been experienced either with argon butt welding or resistance welding and that only slight modifications to forming techniques employed on 18/8 alloys have been required. Preliminary results of mechanical and pressure cycle tests to determine fatigue life and the efficiency of the bellows generally are reported to be encouraging.
If you’d like more information regarding Ferralium 255, please get in touch with a member of our expert team today.
Worldwide Delivery Available
We can offer air, sea and road freight shipping options, with choice of packaging, to deliver to customers globally.
Inventory Management
Let us manage your total material requirements with call-off and consignment arrangements.
Up to 40 sizes per alloy available
More sizes equal less machining and a more cost-effective supply chain.
