A pass blast tool has no moving parts. It is supplied with a centering collar and adjustable centering carriages to suit a varied range of pipe diameters. The blast stream through the deflection tip strikes the internal pipe surface to get a 360-degree blast pattern. The nozzle deflection tip and stem sleeves are made of tungsten carbide to ensure longer life. Ideally suited for smaller pipe IDs of 51 mm to 305 mm, it is supplied with a centering collar to treat pipe IDs up to 127mm and an adjustable centering carriage for pipe IDs of 127mm to 305mm.