What are the mainstream application industries of alloy structural steel?

Automotive manufacturing consumes the largest volume, used for crankshafts, drive shafts, gear sets and suspension connecting components. Engineering machinery relies on it for hydraulic cylinder barrels, gearbox housings and heavy load fasteners. Energy and pressure equipment adopt alloy structural steel for boiler pipe fittings, wind turbine spindle forgings and petroleum wellhead structural parts. Bridge construction, agricultural machinery and general mechanical equipment also widely select this material for all core load-bearing components requiring long-term stable bearing capacity.