About Mine Components
Mine Components is a specialist engineering and manufacturing business supplying wear-resistant crusher components, scraper and belt conveyor structural parts, and heavy cast steel components to mining and bulk material handling operations globally. We operate as a business unit of Sino Machinery Industries (SMI), an industrial manufacturing group established in 1996 with production, sourcing, and commercial operations across multiple locations in China and international jurisdictions.
Our clients are procurement engineers, maintenance managers, and technical teams at mining operations, bulk handling terminals, aggregate producers, cement plants, and heavy industrial facilities across Europe, North America, Australia, Southeast Asia, the Middle East, and Africa. What they share is a straightforward requirement: components that perform to specification, documentation that satisfies their quality systems, and a supplier they can communicate with without friction. That is what Mine Components is built to provide.
What We Manufacture
Our manufacturing scope covers three primary product areas. A full product listing is available in the Products section.
Crusher wear parts — jaw plates, crusher hammers, impact plates, concaves, mantles, and secondary crusher liners in manganese steel (Mn13, Mn14, Mn18) and alloy variants including high-chromium iron. We supply primary, secondary, and tertiary crushing stages across jaw, cone, gyratory, hammer mill, and impact crusher configurations.
Conveyor components — structural and wear components for scraper conveyors (armored face conveyors, stage loaders, surface chain conveyors) and belt conveyors (rollers, idlers, pulleys, frames, structural supports, guides, and transfer chute systems). We supply individual components and complete wear part packages for conveyor systems.
Heavy cast steel components — planetary carriers, industrial housings, track shoes, chute sidewalls, and custom structural castings for mining machinery and drive systems. These components are typically produced to client drawings under NDA, where OEM supply is unavailable or the client requires a modified specification to address a recurring performance issue.
Process Control: How We Ensure Consistent Quality
Most manufacturing quality problems do not originate at final inspection — they originate earlier, when a process step is executed outside its specified parameters and the deviation is not caught until the product is finished. Our response to this is a quality system built around process control at every production stage, not end-of-line detection.
Every order follows a structured sequence: incoming material inspection and certification verification before material enters production, sample approval at the casting or first-piece stage before batch production is released, in-process checks at heat treatment, machining, and surface treatment stages, and final inspection with documented results before any component is approved for packing. This sequence is applied consistently across all orders, governed by documented procedures aligned with ISO 9001:2015 — not because certification is required, but because inspection without a defined standard and a defined process produces inconsistent results. The standard provides the framework; the process provides the discipline.
What this means in practice: a dimensional deviation caught at the machining stage costs one operation to correct. The same deviation caught at final inspection costs the full production sequence to correct — or results in a concession request that nobody wants. Our process control discipline exists to catch problems at the point where they are cheapest to fix.
For an overview of our quality assurance system, see the Quality Assurance page.
Manufacturing Experience and Process Expertise
Equipment defines what geometry a component can be produced to. Experience and accumulated process knowledge determine whether the component performs as designed once it leaves the factory.
Our CNC machining centres and grinding equipment can hold dimensional tolerances to ±0.02 mm on critical features. That capability is table stakes in precision industrial manufacturing. What distinguishes a consistent, high-performing component from a dimensionally correct one is the process knowledge applied at the stages that equipment alone cannot control: the heat treatment soak temperature and hold time for a specific alloy and section thickness, the quench sequence and timing that determines through-hardness distribution in a thick manganese casting, the sequence of operations that minimises residual stress before finish machining of a precision bore.
These parameters are not published in material specifications. They are accumulated through decades of production, failure analysis, and iterative process refinement. Our senior process engineers and heat treatment specialists have been applying and refining these parameters across a wide range of alloy types and component geometries for over 30 years. This institutional knowledge — held by people, not just by documents — is the primary reason our batch-to-batch consistency exceeds what our equipment specification alone would suggest.
We also maintain an in-house R&D team capable of independent or collaborative product development and trial production. For clients who require a material grade substitution, a geometry modification to address a performance limitation in the original design, or a new component developed from a functional specification rather than a finished drawing, our engineering team can support the development process from concept through to approved production standard.
In-House NDT: Independent Verification of Internal Quality
Dimensional inspection and hardness testing verify what can be measured at the surface. For cast and forged components where internal soundness is critical to service performance — particularly in thick-section castings, heavily loaded structural components, and safety-critical parts — surface inspection alone is insufficient. An internal shrinkage cavity or crack that is undetectable by surface methods can propagate under cyclic load and cause premature failure in service.
Mine Components operates a dedicated in-house non-destructive testing (NDT) team, independent of the production and inspection functions. This team performs magnetic particle inspection (MPI) for surface and near-surface crack detection, and ultrasonic testing (UT) for volumetric examination of casting soundness in high-stress sections. Having this capability in-house — rather than outsourcing NDT to an external agency at the end of the production sequence — means NDT can be applied at the appropriate stage in the production process, results can be acted on immediately, and the NDT team develops specific knowledge of the component types and alloys we produce.
For orders where NDT is a specified requirement, inspection records are included in the standard documentation package. For orders where NDT is not specified by the client but where our engineering assessment identifies a risk based on component geometry or application, we apply NDT as an internal quality step and report the results. We do not wait to be asked if we believe the inspection is warranted.
International Team and Real-Time Communication
Supplying industrial components internationally involves a gap that many manufacturers underestimate: the gap between production status and client knowledge of that status. An order that is on schedule but not communicating is indistinguishable, from the client’s perspective, from an order that is delayed. Uncertainty about delivery date forces clients to hold larger safety stock, creates unnecessary escalation activity, and erodes confidence in the supplier — even when the product eventually arrives on time and to specification.
We have structured our client-facing operations to close this gap. Our team includes international sales and technical staff with language capability and commercial experience across the key markets we serve. Our logistics team manages export documentation, freight booking, and customs compliance as an integrated function, not as an afterthought at the end of the production process.
On time zone coverage: when it is Saturday morning in Xi’an, it is Friday afternoon on the US East Coast. When our Xi’an team ends their week, our international team remains reachable. For clients in Europe, the overlap between European business hours and Xi’an morning hours provides a daily communication window. For clients in North America and Australia, our international team provides continuity outside Xi’an business hours. For production status, inspection updates, or shipping notifications — the information turnaround target is 1–2 hours, not 24–48 hours.
For clients with ongoing or high-volume supply relationships, we provide access to our ERP system’s order tracking module, allowing direct visibility of production stage, inspection status, and shipping status without requiring a query to be raised and answered. The production status of your order — whether it is at casting, heat treatment, machining, inspection, or awaiting shipment — is available to you in real time.
Contractual Partner
Contracts and invoices are issued by the respective subsidiary or authorised entity within Sino Machinery Industries that specialises in your specific product line and region. This structure allows us to streamline logistics, ensure regional regulatory compliance, and provide localised support for international shipping and customs clearance. The contracting entity will be identified at the quotation stage, prior to any commitment.
How We Work with Clients
Inquiry and specification — we review client drawings and specifications technically before confirming an order. If there is an ambiguity in the drawing, a material specification that requires clarification, or a dimensional feature that presents a manufacturing risk, we raise it before production — not after. Most technical queries are resolved within one or two exchanges.
NDA and intellectual property — all client drawings, part geometry, and technical specifications are handled under non-disclosure agreement as standard practice. We do not share client proprietary information with third parties and do not produce the same proprietary part for competing clients without explicit written authorisation. We execute the client’s preferred NDA form before any technical documentation is exchanged where required.
Documentation — each order is accompanied by a documentation package appropriate to the component: chemical composition reports per heat, heat treatment records with time-temperature curves, dimensional inspection records, hardness test results, and NDT records where applicable. Documentation is supplied in English as standard. We treat documentation as part of the product, not as a supplementary administrative task.
Third-party inspection — available on request. We support client-nominated inspectors and can accommodate pre-shipment inspection by SGS, Bureau Veritas, or equivalent agencies where required by the client’s procurement process. For most orders, our standard in-house inspection documentation is sufficient for client acceptance without additional third-party involvement. Where third-party inspection is not required, it adds cost and lead time without adding quality — we will say so directly rather than recommend it as a default.
Key Facts
| Established | 1996 (as part of Sino Machinery Industries) |
| Location | No. 3, Xinglong Industrial Zone, Chang’an District, Xi’an, Shaanxi, China 710119 |
| Parent company | Sino Machinery Industries |
| Primary markets | Europe, North America, Australia, Southeast Asia, Middle East, Africa |
| Product focus | Crusher wear parts, conveyor components, heavy cast steel components |
| Industries served | Mining, coal processing, aggregate and quarrying, cement, bulk handling |
| Quality system | ISO 9001:2015 — process control from incoming material through final inspection |
| NDT capability | In-house MPI and UT team, independent of production |
| R&D | In-house engineering team supporting product development and trial production |
| Third-party inspection | Supported on request (SGS, Bureau Veritas, or client-nominated) |
| Order visibility | ERP-based real-time production tracking available to key clients |
| Communication response | Production and shipping status updates: 1–3 hours. Technical inquiries: within 3 working day. |
| NDA | All client technical data handled under NDA as standard |
| Contact | inquiry@minecomponents.com | +86 29 88988 790 |