... J55, K55, M65, L80, C95, N80,Q125, S235GT, S195T, Grade 1, Grade 2, Grade 3, ST33-2, St33, St37, St42, St34-2, St37 ... cylinder acts as a permanent load-carrying member, or as a shell to form cast-in-place concrete piles - for welded, riveted,or ... bridges and buildings, and for generalstructural purposes- suitable for nominal pressure 25 for liquids and nominal pressure 10 for air and non-hazardous ...