Box Type Surface Plates — IMPA 651021-651036

Box type surface plates in the IMPA 651021–651036 range are the flat reference tools used in engine rooms, workshops, and deck maintenance spaces aboard cargo ships, container vessels, tankers, bulk carriers, and offshore support vessels. Chief engineers and engine fitters rely on them to check flatness, mark out replacement parts, and verify machined components before refitting. Because a worn or distorted plate gives false readings, having a true, re-scrapable surface on board directly reduces rework and unplanned downtime.

The series covers 16 individually ordered IMPA codes, each with its own size and precision grade, so purchasing officers can match the plate to the job rather than compromise. Plates are cast in grey iron to HT200–300 with a working-surface hardness of HB170–240, ribbed or box-section for stiffness, and hand-scraped to restore or hold accuracy. The working face can be supplied with V, T, or U slots, round holes, or elongated holes for clamping and location. Every plate is stress-relieved and demagnetised to limit movement in service, and the side faces carry threaded or cylindrical holes for lifting handles or eye bolts. Five accuracy grades are available — 0, 1, 2, 3, and fine-planed — and the scraped surface allows accurate, visual flatness checking by the marking-medium method.

ALL-K MARINE Ship Store trades internationally as ALL-K MARINE CO.,LTD, a China-based wholesale and retail supplier of IMPA-coded marine stores. We hold the full 651021–651036 range for order, price each code individually, and quote within 24 hours. This product line is sourced and supplied with supplier QC inspection, not manufactured in our own works. Orders ship worldwide through freight forwarders, and on request we can deliver to your local ship agent for onward transfer to the vessel.