Stainless Seamless Steel Pipe

Stainless Seamless Steel Pipe

To make seamless tubing, the first step is to form a seamless pipe known as a hollow/mother tube. Starting with solid round stock, the billet is first drilled through then heated and forced through a narrow die. The center of the hollow tube is supported during this process by a long rod known as a mandrel. Next, the mother tube is put through a pilger mill.  This machine uses a pair of rolling dies and a second mandrel to elongate and reduce the tube to size.
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Sizes

Sizes: 1/8" - 36" +
Schedules: S/5s - XXS

Types

Super-Austenitic steel
Ferritic and Martensitic steel
Duplex steel

Standard

ASTM A312 Austenitic Stainless Steel Pipes for high-temperature and general corrosive service.
ASTM A213 for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A269 Austenitic Stainless Steel Tubes for General Service
ASTM A270 for Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubes
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