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Ringrollers manufactures standard flanges according to international specification, from 12 inch to 4 metre OD. Special sizes can also be accommodated. The flanges are made from low carbon manganese steel, stainless steel and duplex stainless steel.
Typically these flanges are used by pressure vessel fabricators, in the petro-chemical industry, by pipeline contractors and in water, mine dredging and nuclear activities.
The company specialises in the manufacture of weld necks, slip-ons, blinds and special made-to-order flanges from 250NB upwards. These flanges are forged to any recognised international specification including ANSI B16.5, API 605, MSS SP44, AWW C207-55, BS 4504 and ASME B16.47 A or B. All weld neck flanges are profile rolled and readily available in this condition. They can also be machined as required. Full certification is provided with all flanges.
Flange materials manufactured to
ASTM
A 105
A 350
A 694
AAR M-107: A 182 F1, F5, F1, F304/F304L, F316/F316L, F321, F52
DCD-DORBYL
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