D.P. Wires IS 14268:2017 Class I Low Relaxation LRPC Strand

As part of its LRPC strand range, D.P. Wires Limited offers the D.P. Wires IS 14268:2017 Class I Low Relaxation LRPC Strand for mainstream Indian bridge, metro and building work where a stabilised, hot-stretched strand is specified for its lower long-term stress loss.

Engineered in accordance with IS 14268:2017, Class I, mechanical performance spans a relaxation loss capped at 2.5% of specified minimum breaking strength after 1,000 hours at 70% initial load, with the same 9.5–15.2 mm diameter spread carried over from the Class 1 normal-relaxation range.

Common end-uses for the D.P. Wires IS 14268:2017 Class I Low Relaxation LRPC Strand span national highway viaducts, metro rail segments and multi-storey post-tensioned slabs, the segments this brochure lists among D.P. Wires’ reference clients including NHAI, several metro rail corporations and NTPC.

Before it leaves the mill, the D.P. Wires IS 14268:2017 Class I Low Relaxation LRPC Strand is checked against reference clients that include the National Highways Authority of India, several state Public Works Divisions, Nuclear Power Corporation, and the Delhi, Kolkata, Bhopal, Indore, Gujarat and Maharashtra metro rail corporations. D.P. Wires backs each dispatch with its own concurrent quality-control testing rather than relying solely on third-party sign-off.

Site precautions for the D.P. Wires IS 14268:2017 Class I Low Relaxation LRPC Strand: cut only with an abrasive disc cutter or shear cutter, never with a flame or welding torch, since heat changes the steel’s microstructure and its mechanical properties. Coils should be unloaded with a crane rather than dropped off the vehicle, stored under cover on a raised platform away from direct ground or water contact, and protected with a vapour phase inhibitor if they will sit on site for an extended period before stressing.