... :1) O.D seamless pipes (nominal to 48")2) Wall thickness up to 3.15"Available Specification as below:1.Cr5Mo(STFA25 ... . API 5L for use in conveying gas , water and oil in both the oil and natural gas industries.:A25 ,A, B ,X42 ... ,X46 ,X52 ,X56 ,X60 ,X65 ,X70 and X80 Seamless Pipes and Tubes (Big O.D. and Heavy Wall Thickness)