spiral welded steel pipe 1.O.D:219mm~3050mm 2.W.T:2.5mm~60mm 3.Material:Q235,L245,X42,X60,X70,etc 4.Certificate:ISO,SGS Product Spiral steel pipe StandardBS 1387, ASTM A106-2006, API 5L, JIS G3465-2006, ASTM A53 ,ASTM A252, EN10217,EN10219MaterialQ235A,Q235B,Q345,L245,L290,X42,X52,X60,X70,X80,0Cr13,1Cr17,00Cr19Ni11,1Cr18Ni9,0Cr18Ni11Nb. SizeO.D219mm~3050mmW.T2.5mm~60mmLength6m,5.8m,12m,18m,or be ...