S690QL High-Strength Steel Plate — Kalamboli & Faridabad stockist

Quench-and-tempered high-strength steel lets designers cut section thickness while carrying the same load — lighter crane booms, longer reach, more payload, and lower fabrication and transport cost. The trade-off is that it demands correct welding procedure and handling, which is where supplier support matters.

S690QL is the established structural high-strength grade — 690 MPa yield — for cranes, bridge components and heavy mobile equipment. We hold it in ready stock from 2 to 50 mm at our Kalamboli and Faridabad warehouses, cut and formed to your drawing.

Every plate is supplied to EN 10025-6 with its mill test certificate. For welding, the practical rules are preheat 100–175 °C depending on thickness, low-hydrogen H5 consumables, and interpass ≤ 200 °C to preserve the Q&T properties — our team can advise on the exact procedure for your section. Send your thickness and quantity for a quote.