Stacker Crane
Two Way Shuttle
Conveyors
Turn Table
2023
Rayong, Thailand
Formerly known as GC Logistics (GCL), a subsidiary of the PTT Group, and now operating as WHA GC Logistics, WHA GCL is a key player in Thailand’s logistics and industrial estate sector. The company delivers end-to-end logistics services—from silo operations and warehouse management to transportation and freight forwarding—helping businesses across industries optimize their supply chains. For this project, WHA GCL oversaw logistics operations for a polyethylene manufacturing facility.
WHA GCL initially operated six warehouses using semi-automated two-way pallet shuttles. Each shuttle had to be manually repositioned by forklifts to different racking runways, limiting efficiency and increasing operational costs. In addition, finished jumbo bags from the production line were manually transported by forklift to the warehouses. Given the long distances between the production line and storage areas, this workflow created significant labor costs and inefficiencies.
To address these challenges, Auto Motion Works implemented a fully automated solution covering the entire flow—from the end of the production line to the outbound docks.
A central conveyor line was installed, running the length of all six warehouses and connecting directly to the production line. Each warehouse was equipped with inbound and outbound stations, enabling efficient inter-warehouse movement when required.
The most significant upgrade was the storage system. Auto Motion Works installed 12 stacker cranes across the warehouses, positioned perpendicular to the shuttle runways. These cranes fully replaced forklift operations, automating the movement of shuttles between storage slots.
To unify the system, Auto Motion Works replaced the legacy shuttle control systems with its own Warehouse Control System (WCS). This allowed for seamless coordination between the newly installed stacker cranes and the overhauled fleet of 40 two-way shuttles.
Finally, three-pallet gravity rollers were added at each outbound dock, providing a buffer zone for smoother dispatch handling and improving outbound flow.
WHA GCL’s polyethylene facility now benefits from a fully automated warehouse system with significantly lower transport costs. Manual forklift transport has been eliminated, warehouse personnel have been reallocated to higher-value tasks, and overall warehouse operations are now streamlined, consistent, and future-ready.
