STANDARD RING PVT. LTD. (SRP) manufactures Coil Spring for Piston Rings, it is used with Chrome Plated Slotted Oil Ring to provide required outward thrust to the Oil Ring.

SRP Inspection and Testing Department uses various type of Measuring Instruments like Micrometers. Vernier Calipers, Tangenial Tension Instrument etc. to ensure that every Coil Spring produced in SRP is of Top Class quality.