1.Spiral steel pipes 2.Standard: ASTM A252, SY/T5040, API 5L, EN10219, EN10217 ... to 2,540mm 4.WT: 2.5 to 30mm 1. Spiral pipes2.Material: A53 (A, B), Q235B, Q345B, X46, X52, X60 ... .HS: 73041990008. High quality and service LSAW / SSAW/ERW Steel Pipes and Tubes