The Doppler CRS-15 small-diameter pipe weld scanner is designed for phased array ultrasonic testing of circumferential butt welds on pipes from 20 mm (0.8") to 114.3 mm (4.5"). It offers two configurations: single-chain single-side inspection and dual-chain simultaneous double-side inspection. With a width of only 34 mm, the single-chain version pairs with a dedicated side-emergent self-focusing probe, ideal for small-diameter pipe weld inspection in confined spaces.