34MnB5 40MnB5 26MnB5 SWRCHB 620 precision seamless steel tubes 34MnB5 C 0.31-0..37 Si 0.30 max Mn1.2-1.50 P0.025 S0.025 Cr0.30 26MnB5 C 0.23-0.29 Si 0...
BS6323 CEW1 57.15X2 Seaamless steel tubes material BS6323 This standard is published in eight separate parts as follows: --Part 1: General requirement...