... ,SCH80S, XS, SCH80 etc.Length1m-24mStandardAPI 5L, API 5CT, ASTM A53, ASTM A252, ASTM A500, ASTM A795, BS1387, BS1139, EN10255, EN10219, EN10217, EN39, DIN2440 ... J55, K55, M65, L80, C95, N80,Q125, S235GT, S195T, Grade 1, Grade 2, Grade 3, ST33-2, St33, St37, St42, St34-2, St37 ... the steel cylinder acts as a permanent load-carrying member, or as a shell to form cast-in-place concrete piles - for welded ...