... Tubings: OD: 6-219 mm, with wall thickness from 1-35 mm 1.6523/20CrNiMo/SNCM220 Specialized high quality steel1. ... shapesTubings: OD: φ6-219 mm, with wall thickness ranging from 1-35 mm.Finished goods condition: hot forged/hot ... SCr420,20Cr420Cr5130,SCr43030Cr5135,SCr435,34Cr435Cr5140,SCr440,41Cr440Cr8620H20MnCrNiMo8620RH20CrNiMo8627H27CrNiMoH907AH04MnNi2TiVNb111 1.6523 / 20CrNiMo / SNCM220 alloy steel