... thickness seamless steel pipe 2.For example 219 x 30 ,245 x 22,273 x 50,377 x 48 ASTM A335 P11/P12 seamless steel ... example 60.3 X 12mm,88.9 X 16mm,114.3 X 20mm,194 X 50mm, 273 X 50mm, 299 X 45mm,325 X 60mm Less Thickness ... Standard :ASTM A335 P11 & P12 For example :219 x 30 ,245 x 22,273 x 50,377 x 48Packing :Black coating ,Bevel ,3PE ,capsNOT :Donot ...