Seamless steel pipe astm a53 Application For mechanical and pressure use, and also for transporting steam, water, gas and etc. Details Size O.D.: 6.0~820.0mm w.T.: 1í½80mm l: max 12000mm Grade and chemical composition (úÑ) Grade cín mín pín sín cuín niín crín moín vín A 0.25 0.95 0.050 0.045 0.40 0.40 0.40 0.15 0.08 B 0.30 1.20 0.050 0.045 0.40 0.40 0.40 0.15 0.08 Mechanical propertiesú¦ Grade rm tensile strength(mpa) yield point(mpa) elongation a% A í²330 í²205 í²20 Seamless steel pipe astm a53