ASTM A179 seamless Heat Exchanged Tubes/Boiler Tubes Used for heat-exchange, steam,condensers and similar heat transfer apparatus, high temperature service Standard: ASTM A179 OD. Range:6mm â?? 88.9mm Wall thickness: 1mm-15mm Length: Max length 24M Type: Seamless boiler tube/heat exchanged tubes Packaging detail: Bundles with plastic paper packaged or wooden box package Delivery date: 10-30days Technique: cold drawing, cold rolled