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Offshore Stainless & Alloys is the UK’s only NORSOK D59 approved manufacturer of cold drawn bar.

With over 25 years of precision cold drawing, we manufacture and stock stainless steel, duplex, super duplex and nickel alloy bar in round, hexagonal, flat and square sections, held in depth for prompt despatch from UK stock.

Now part of the Langley Alloys group, we supply the offshore energy, oil and gas, marine, defence and precision engineering sectors, providing the close-tolerance bar used to manufacture valve bodies, stems, seats and fasteners.

Our cold drawing process consistently delivers dimensional accuracy and surface finish above the requirements of the standard. PRODEC® enhanced-machinability stainless is now our standard stocking grade across 316L, 304L and 303, delivering higher cutting speeds, extended tool life and improved surface finish without compromising corrosion resistance. As part of the Langley Alloys group, alongside Copeland & Craddock, customers gain a single source spanning specialist alloy stockholding, precision bar processing and CNC machining, from raw bar to finished component. PRODEC® ROUND BAR SUPPLY Grades: 316L, 304L and 303 (PRODEC® enhanced-machinability stainless, our standard stocking grade) Diameter: 10mm to 180mm, direct from UK stock COLD DRAWN BAR RANGE Stainless steel: 304 / 304L, 316 / 316L, 316Ti, 316L (Mo>2.5%), 321, 347, UNS S31254; with 316L, 304L and 303 supplied as PRODEC® grade as standard Duplex & super duplex: UNS S31803, UNS S32760, UNS S32750, UNS S20910 Nickel alloys: C22, C276, 400, K500, 625, 718, 725, X750, 825 Sections & sizes: Round, hexagonal, flat and square; cold drawn 8 to 100mm Standards: NORSOK M-630, NACE MR0175, ASTM A193 / A320 (B8, B8M, B8T classes), BS 4882, A2 / A4 / A5 property classes