On an ASB stretch blow molder, uneven preform heating doesn’t hide. You see it immediately—flash, wall thickness drift, and bottles that just don’t make the cut. The Nissei ASB 150DP heater tube was built for that machine, not as a one-size-fits-all replacement. It matches the geometry, mounting, and thermal control the line expects, so the heating tunnel behaves consistently, shift after shift. At the heart of it is short-wave infrared: a quartz tube with a halogen lamp element, sized and rated to fit the 150DP footprint. It runs on standard line voltage and draws the power the ASB heating zone is designed for, so it responds quickly and holds setpoint recovery every time a preform enters. The R7s connector and end-seal design match the original interface—swap it in without rewiring or tweaking brackets. Here’s the point: consistent heat profile equals consistent bottle quality. With this tube, you get predictable crystallinity across the preform wall, which keeps stretch ratio and blow pressure from wandering. The payoff is fewer rejects, less downtime chasing temperature drift, and a heating section that recovers fast between shots. Energy use stays where it should be, because the emitter is tuned to the ASB duty cycle—no over-spec waste. Installation is straightforward, but the quartz envelope is brittle. Handle it by the metal ends, keep it clean, and don’t let oils or solvents touch it. Set the reflectors right and verify alignment in the tunnel; even a small mis-focus shifts the hot spot and shows up on the bottle.Stick to OEM spacing and clamping, and the 150DP tube delivers repeatable performance on an ASB line.