astm a312
ASTM A791/A791M Welded unannealed ferritic chrome steel tubing. ASTM A789/A789M Seamless and welded ferritic/austenitic stainless steel tubing for common service. AS1528, Parts 1 to 4 Tubes and tube fittings for the meals business. The stainless-steel pipes are one of the most used products in the piping functions.