Plant Maintenance Experts - EST Co.,Ltd.

Flange Gasket Surface Flatness Measuring InstrumentThe strength of the analog measuring instruments that exceeds 3D measurements

Innovative measuring instrument for measuring flanges and heat exchangers (pipe plate surfaces) and
for quantifying distortion and flatness enabling visual confirmation of the condition.
Demonstrates accurate support for inspections and measurements of products, as well as for repairs and replacement during operation.
Also aids in investigating the causes of trouble.
Lightweight, power free, and can be used in inclement weather. That was not possible with a 3D measuring instrument.
Allows you to make decisions based on JPI standards, JIS standards, and API standards.


  • Flange Standard Type S-2000

    ●Application : Shell flange
    ●Measurement range : Φ200mm - Φ2000mm

  • Tube Plate Surface TP-1500

    ●Application : Tube bundle front/back
    ●Measurement range : Φ450mm - Φ1500mm

  • Tube Plate Surface TP-2000

    ●Application : Tube bundle front/back
    ●Measurement range : Φ1000mm - Φ2000mm

  • Partition Groove PG-1000, PG-1500, PG-2000

    ●Application :
    Tube bundle partition groove
    Channel cover partition plate
    ●Measurement range :

  • Dedicated Case

    ●Applications : Dedicated case for divider groove measuring bars
    ●Size : Various sizes

The measuring instrument comes with a "inspection Certificate" and "inspection report".

We also have a comprehensive after-sales service system in place.

RTJ Measurement Set (Sales and Rental)

A set of gasket and groove measuring instruments for RTJ flanges

This is a set of items required for groove dimensional inspection with JPI-7S-23-1998.
The dedicated data sheet and handling instructions make it possible to inspect the grooves.