ASTM A249 “Specification for welded austenitic steel boiler, super heater, heat exchanger, and condenser tubes” AS 1528.1 “Specification for tubes (stainless steel) for the food industry” AS1528 was ...

A 1-foot section of 1-inch galvanized pipe costs about $7 in 2011 whereas a corresponding stainless steel pipe cost $8.50. For a 6-foot piece, where the cost of the material becomes more important ...