Mark & model : 1/2"-72";thickness:wall thickness: sch-5s to sch-xxs; material: astm a234-wpb wpc, a420-wpl6/l3 st35.8i, p235, p265, st37.0, st20#, astm a234- wp12, wp11, wp15, wp22, wp1, wp5, wp9, wp91 Origin : asia and pacific area china Quality standard : international H.S.Classification : metal articles articles of iron or steel 7304 tubes, pipes & hollow profiles, seamless, of iron nesoi or steel Type:2d 3d 4d 5d 6d 7d 8d 9d 10d steel pipe bends-induction bends Size:1/2"-72" Wall thickness: sch-5s to sch-xxs Standard: ansi/asme b16.9, din2605-1/2, din2615-1, din2616-1/2, en10253-1/2/3, gost 17375-2001, gost 17376-1, gost 17378-1, gost 17379-1, gost 30753-2001, ?? 102-488-05, gost 102-60-81, gost 22822-83 jis b2311, gb. Material: astm a234-wpb wpc, a420-wpl6/l3 st35.8i, p235, p265, st37.0, st20#, astm a234- wp12, wp11, wp15, wp22, wp1, wp5, wp9, wp91