WA6012 VS WA6015 Flat Top Tower Crane: Project Selection Guide

WA6012-6A (QTZ80 Flat-top Tower Crane)

• Max. lifting capacity: 6t (at 30.6m radius); 1.2t at 60m jib tip.
• Rated lifting moment: 800 kN·m; freestanding height: 40m; max. height with mast ties: 190m.
• Hoisting wire rope capacity: 380m; lower total machine weight and counterweight mass.
• Lightweight standard mast sections and jib segments allow for more components per transport vehicle, reducing sea/land shipping costs.
• Lower total counterweight mass results in reduced foundation loads, allowing for smaller, more economical foundations.

WA6015-8A (QTZ100 Flat-top Tower Crane)

• Max. lifting capacity: 8t (at 19.1m radius); 1.5t at 60m jib tip; significantly higher load capacity for long-range lifting.
• Rated lifting moment: 1250 kN·m; freestanding height: 40m; hoisting wire rope capacity: 440m; greater operational margin for 2-fall reeving in super-high-rise applications.
• Thickened jib cross-section offers distinct advantages for lifting heavy components at short radii; highly suitable for PC (prefabricated concrete) assembly sites.
• Higher structural strength ensures better stability at windy coastal sites and provides a greater safety margin for mast tie reaction forces.

• Short-range heavy-load scenarios: WA6015 holds a distinct advantage.
• At a 30m radius, the WA6012 lifts only 3.45t, whereas the WA6015 lifts 4.78t. For lifting basement steel components, precast wall panels, or heavy formwork, the WA6015 eliminates the need for frequent trolley adjustments, significantly boosting construction efficiency.
• Long-range light-material lifting: WA6012 is sufficient; the preferred choice for limited budgets.
• For light construction materials such as standard red bricks, steel pipes, and small rebar bundles, the 1.2t capacity at the 60m tip fully meets the requirements of multi-story and standard high-rise residential projects. Superior Rope Capacity for Super-High-Rise Projects: The 6015 Model Offers Greater Margin
• With a 440m rope capacity, it ensures ample remaining rope length when operating at a 2-fall configuration-required for heights exceeding 95m-thereby reducing the frequency of rope changes and mast section dismantling.

Prioritize the WA6012 (6t Class)

• Standard residential developments, resettlement housing, and high-rise residential buildings under 18 stories; primary loads consist of steel pipes, sand/gravel, and small rebar bundles;
• Small-to-medium industrial park factories and logistics warehouses featuring lightweight structural components;
• Projects with short durations or requiring frequent equipment rotation between sites; limited budgets for leasing or purchasing;
• Small-scale overseas housing projects where transport vehicle or vessel space is constrained, necessitating logistics cost control;
• Sites with average soil bearing capacity that cannot accommodate the large, heavy foundations required for massive tower cranes.

Prioritize the WA6015 (8t Class)

• Prefabricated construction (PC) projects involving the lifting of mass-produced wall panels and floor slabs for affordable housing;
• Urban commercial complexes, office buildings, and super-high-rise public structures featuring extensive steel framing and heavy beams/columns;
• High-density city-center sites with multiple tower cranes; requires long-reach coverage over large areas to minimize the total number of cranes deployed;
• Coastal regions prone to typhoons, requiring high structural rigidity and overturning resistance;
• Long-term, large-scale infrastructure projects involving continuous heavy-load operations where equipment durability is paramount.

Purchase Cost:The complete 6012 unit is 15%–22% cheaper; counterweights and jib components are also more affordable;
Logistics Cost:Individual mast and jib sections of the 6012 are lighter, allowing for higher loading density on domestic flatbed trucks and in overseas shipping containers, resulting in significant savings on ocean freight;
Leasing Cost:The 6012 offers a lower monthly rental rate for the same period, providing excellent cost-performance value for short-term projects;
Maintenance & Wear:The 6015 experiences less wear on mechanisms and pins during heavy-load operations, making it more cost-effective regarding depreciation for long-term, large-scale projects; conversely, the 6012 demonstrates a lower failure rate on sites involving light-load operations, such as small residential projects.

For standard high-rise residential projects, lightweight building materials, budget-conscious operations, and frequent site relocations: choose the WA6012-6A.
For prefabricated construction, super-high-rise public buildings, heavy components, long-term heavy-load operations, and coastal sites exposed to strong winds: choose the WA6015-8A.
For small-scale overseas batch housing projects, prioritize the 6012; for large-scale overseas urban complexes and prefabricated construction projects, go directly with the 6015.