HYWG’s one-stop production model on wheel rim quality: the control logic from raw materials to finished products.

It is essentially a vertically integrated quality control system, rather than simply "doing more by ourselves".

The actual load-bearing component of the wheel rim is not its surface, but the structural steel section. In the one-stop design approach , the steel section is designed by reverse engineering the rim structure , controlling wall thickness tolerances, fillet transitions, and fiber orientation , while providing safety margins for welding and heat treatment . This step directly determines fatigue resistance , crack propagation resistance , and long-term service stability .

In a multi-piece rim, each component is part of the system.

The advantage of one-stop production lies in the fact that the rim body, lock ring, and seat ring all come from the same technical standard , with closed-loop control of dimensions to avoid "fitting but not being reasonable ." The elasticity and fit clearance of the lock ring are uniformly designed . It 's not just about "being able to install," but about "not loosening, shifting, or deforming over a long period of time . "

In a one-stop system, welding parameters are highly matched with the source of steel and structural steel , and weld position, penetration depth, and heat input are predictable.

Avoid hidden cracks caused by material inconsistencies . Heat treatment processes serve overall performance, not just individual points . Eliminate residual welding stress , balance strength and toughness , and ensure stable rim operation under heavy loads and impact conditions .

One-stop production supports true end-to-end quality traceability . From steel to structural steel to parts to welding to finished products , each process can be traced back for accountability and optimized forward . Dimensions, paint , and NDT testing form system data , which means that problems can be "prevented" rather than "exposed" in the market .

This is precisely the core reason why HYWG has become trusted by OTR users worldwide .

's original equipment manufacturer (OEM) rim supplier in China , HYWG believes that rims are never just "replaceable parts," but rather key structural components that directly affect the safety, uptime, and total lifecycle cost of the vehicle.

For this reason, Volvo has always adhered to one principle when it comes to wheel rims: not only must the performance meet the standards, but the quality must also be controllable in the long term.

As a representative model of Volvo's mid-to-large wheel loaders, the Volvo L120H is known for its high uptime, strong loading capacity, and stability, and is widely used in quarries, mines, ports, and heavy-duty earthmoving operations. In these scenarios, the wheel rim is not simply a "load-bearing component," but rather has extremely high requirements in the overall structure of the machine.

Typical operating characteristics of the Volvo L120H include high overall machine weight and large bucket load , high-frequency loading , continuous operation with steering and braking for extended periods, and impact loads under complex road conditions . This means that the wheel rims must simultaneously meet the requirements of high load stability , excellent fatigue resistance , and structural consistency over long-term use . Wheel rim systems that rely solely on outsourced assembly and have uncontrollable materials will find it difficult to maintain stable performance under such conditions over a long period.

HYWG's core advantage in supplying rims for the Volvo L120H stems from its comprehensive control over the entire process, from sourcing to finished product. For the L120H, this means that the rim's load-bearing capacity is not a "one-time achievement," but rather a long-term, repeatable structural performance.

The 22.00-25/3.0 3 -piece rims we provided for the Volvo L120H met the loader's high demands during operation.