The core load-bearing structural components of Zoomlion’s high-performance boom trucks utilize a large amount of LG700QT high-strength steel for construction machinery, independently developed and produced by Liangang.
LG700QT steel is a high-performance material tailored by Liangang to meet the extreme operating conditions of modern construction machinery. The “700” in its steel grade represents a minimum yield strength of 700 MPa, endowing the material with exceptional load-bearing capacity; the “QT” designation signifies advanced quenching and tempering heat treatment, resulting in both ultra-high strength and excellent low-temperature impact toughness. This combination of rigidity and flexibility ensures that Zoomlion’s booms can withstand enormous loads and complex stresses while effectively resisting sudden impacts and fatigue damage during operation, significantly enhancing the product’s safety and durability.
