ASTM A179/A192/A210 Boiler tube OD:17.1mm-114.3mm WT:2mm-14mm STANDARD: ... GRADE: A179,A192,ST52,ST35.8 ASTM A179/A192/A210 Boiler tube1) Cold drawn seamless steel tube/pipe 2) Standard: ASTM ... &medium pressure vessels,boilers,heat-exchangers. ASTM A179/A192/A210 Boiler tube