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Stainless Steel Pipe
A stainless steel pipe system is the product of choice for carrying corrosive or sanitary fluids, slurries and gases, particularly where high pressures, high temperatures or corrosive environments are involved. Due to stainless steel’s aesthetic properties, stainless steel pipe also finds use in architectural applications.Stainless steel pipe can be generally defined as a heavy wall thickness tubing, with dimensions as specified by the American National Standards Institute (ANSI). Pipe dimensions are specified by outside diameter – indicated by the NPS (imperial) or DN (metric) designator and still sometimes referred to as the ‘nominal bore’– and wall thickness, reflected in the schedule number. ASME B36.19 covers these dimensions.
Stainless steel pipe and fittings are supplied in the annealed condition to facilitate fabrication and ensure best corrosion resistance. Atlas Specialty Metals can also supply certain sizes of stainless steel pipe with an abrasive polished finish suitable for architectural applications.
Welded pipe
Welded stainless steel pipe is manufactured from 2B or HRAP stainless steel strip – formed (to shape) and longitudinally welded to completed pipe. All welds are made without the addition of filler metal, except for very large diametres. Standard welded pipe is in nominal lengths of 6.0 to 6.1 metres.
Manufacturing specification:
ASTM A312M – Austenitic
ASTM A358M - Austenitic (large diametre)
ASTM A790M – Duplex.
Seamless Pipe
Seamless stainless steel pipe is produced from hollow billets, which are then drawn across dies until they reach the final desired pipe size. Standard seamless pipe is in nominal lengths of 6.0 to 7.5 metres.
Manufacturing specification:
ASTM A312M – Austenitic.
ASTM A790M – Duplex
