Products details OD: 1/2" TO 10" WT: 10MM TO 16MM Supply ability : 10000 metric ton per month MP:0086--13821304264 Features and specification1) high-frequency welded 2) Outer diameter 15----323mm3) Thickness: 0.5----10mm4) Steel grade: SPHC, 08AL,08F,HG5,DF08,Q195--235,M85) Stands: ASTM, API, JIS,DIN.EN,BS,GBMP:008613821304264