FAQ

After full communication and customer approval, we can provide tool-free quick-release chain links and an open structure for you. These quick-release links let you quickly remove a section of the chain for cleaning or replacement without disconnecting the whole production line. The open structure ensures there are no dead corners where food residue or liquid can get trapped. All our designs follow relevant international standards, and we’ll also give you corresponding cleaning guidelines.

The key is using special-purpose heat-resistant steel material (e.g., ZG40Cr25Ni20) and precise heat treatment control. This material forms a stable oxide film on the surface with its high chromium (Cr) and nickel (Ni) content, and maintains the austenitic structure at high temperatures. We optimize its high-temperature creep strength by controlling the casting's cooling rate and performing solution treatment, ensuring it maintains dimensional stability and withstands thermal loads during long-term thermal cycling.

We can provide a combined "material – process – coating" solution tailored to this operating condition.
The chain is made of martensitic stainless steel or high-grade alloy steel, rather than relying solely on surface coating.
On this basis, a thick-layer Dacromet coating is applied, which can ensure good performance on salt spray resistance of more than 800 hours—far superior to conventional galvanizing. This can effectively resist erosion from palm fatty acids, high temperature and moisture.

If the modification is required because we did not meet the mutually confirmed technical specifications, we shall bear all related costs.
If the change is initiated by the customer as a voluntary design revision, we will assess a reasonble and nominal processing fee based on the modification scope, and clearly inform you of the impact on lead time (normally 3–7 working days). All costs and lead times will be confirmed in writing before any modification work starts, with no hidden charges whatsoever.

We rely on the dual guarantees of "process standardization" and "batch traceability". First, the process parameters confirmed with samples are documented and formalized as standard operating procedures. Second, key production parameters and critical control characteristics (including dimensions) at all key stations are recorded in real time. Process parameters are adjusted promptly against standard procedures to ensure consistent quality and dimensional stability for each batch.

Absolutely. We believe this is a necessary step to make sure the project goes well. The review will be done together by our casting, machining and quality engineers, and mainly check three key points:
1) Design manufacturability: whether there are blind spots that are difficult to cast or machine?
2) Cost and process: Is the process the most efficient and economical one?
3) Risk assessment: Identify potential quality risks points and make plans in advance.
We will also send the review result and improvement suggestions to you as an official document for your confirmation at that time.

For precision machined parts made of ductile iron, precision cast steel, and cast aluminum, our conventional machining tolerances can be stably controlled within ISO IT6–IT9.
For critical mounting and mating surfaces, using high-precision CNC equipment, we can achieve accuracies of ±0.005 mm or even higher.
As we all know, the achievable precision depends on part dimensions and structural complexity. Therefor, we will make a detailed tolerance analysis and report during the evaluation stage of projects.

The core judging principle is the ultimate strength and safety requirements.
Welded chains have a more robust structure and are suitable for scenarios like hoisting, towing and marine anchor chains, which demand extremely high breaking loads and have to withstand multi-directional impact forces.
If your application involves personal safety, the suspension of critical equipment (e.g., lifting heavy-duty molds), or extremely corrosive environments (e.g., offshore platforms), a welded chain is usually a more reliable choice.
Please send us your drawings, so we can further review and provide free recommendations for you.

It means we adopt independent quenching and tempering process parameters for different load-bearing components such as chain plates, bushings and pin shafts, so that each can achieve the optimal balance of strength and toughness, instead of a one-size-fits-all approach.
For example, chain plates focus more on surface wear resistance, while pin shafts prioritize shear resistance. Practice has shown that under the same working conditions in mining, this method can increase the wear life of the entire chain by 25%-35%, and significantly reduce downtime caused by the failure of a single component.

We offer two main types of heat treatment:
one is full heat treatment (e.g., quenching and tempering - quenching plus high-temperature tempering, for structural components requiring good all-round performance),
another is surface hardening (e.g., carburizing, nitriding, for highly wear-resistant gear flanks).
The choice depends on your material of your parts. (e.g., steel 4140 is suitable for quenching and tempering) and component performance requirements (core toughness or surface hardness).
Our engineering team can provide specific recommendations for you according to your parts design.

We ensure this with a set of combined processes: optimized fixturing and clamping (using special fixtures to reduce stress), optimized cutting tools and parameters (high-speed milling to lower cutting force), and stress relief procedures (conducting aging treatment or optimizing machining processes after rough machining).
For example, the flatness of battery trays we machined for new energy vehicle customers can be stably controlled within 0.3mm.

Absolutely. This is our core strength. The process includes:
1) Material selection: Recommending heat-resistant steel grades based on your working conditions (e.g., temperature, wear);
2) Casting and heat treatment: Using lost wax casting or investment casting, with normalizing, quenching and other treatments to optimize performance;
3) Precision machining: Conducted by the same project team, with a detailed process control plan designed to ensure consistent manufacturing benchmarks and final precision of products.
We also provide a complete set of quality documents.Including the dimensional inspection report & material certificate.