api188Above pipe sizes are available in API 5L Gr. B, X42, X46, X52, X56, X60, X65, X70, X80, X100 and X120 material grade. API 5L Pipe Schedule ChartAPI 5L X52 pipe also called L360 Pipe, named by minimum yield strength 52 Ksi (360 Mpa) in API 5L or ISO 3183 specifications, types in seamless, ERW, LSAW, SSAWHSAW.