G Series (BSP) Thread Gauges

G Series (BSP) Thread Gauges, including BSP, BSPP, PS, and ISO 228 Thread Gauges, are used to inspect internal and external pipe threads where pressure-tight joints are not made on the threads.

These Thread Gauges work on a GO / NO-GO principle. The GO gauge, when screwed by hand without using excessive force, should enter and pass through the complete thread length of the workpiece. The NO-GO gauge, when screwed by hand without using excessive force, should not enter the component.

• Manufactured in hardened, precision hand-lapped OHNS Steel material to provide superior accuracy, excellent wear resistance, and optimum finish.
• Gauges are manufactured as per ISO 228-2 and ISO 228-1 standards with a Thread Angle of 55°.
• Manufacturing Range: Dia. R 1/16″ to Dia. 6″.
• Subzero treated at -80°C for Dimensional Stability.
• Calibrated at 20°C under Standards Room conditions.
• Gauges are delivered in plastic case, providing anti-corrosion effect and impact resistance with Calibration Certificate (NABL/NPL Accredited).