... --820mm, 1/2"--32" 3.Steel Grade:20,20G,A179,A106 B,A192,Gr320 4.MOQ:1 Ton Brand name :WanjiWebsite ... .0,ST35.8,ST45.8,Gr320Executive StandardGB3087-1999,GB5310-1995,ASTM A106,ASTM A179ASTM A192,DIN 1629-1984,DIN 17175,BS3059.1-1987Application ... of managemennt:Dedicated manufacture,High quality,Dependent honesty,Best service. ASTM A106 Carbon Boiler Seamless steel pipe(1/2''-32'')