Quality Is Not an Act — It Is a Habit
At WSHT Mining Group, quality is built into every step of our process — from raw material procurement through design, manufacturing, assembly, testing and after-sales service. Our ISO 9001:2015 certified quality management system and CE-marked product lines reflect our commitment to delivering mining equipment that meets the highest international standards and performs reliably in the harshest operating environments.
Every crusher, screen, grinding mill and mobile plant that leaves our factory passes through a multi-stage quality inspection process — ensuring it arrives on site ready for years of dependable service.
WSHT QC engineer performing precision measurement on crusher components during production inspection
Multi-Stage Quality Control Process
Stage 1: Raw Material Inspection
Quality starts with raw materials. All steel plates, castings, forgings, bearings, electric motors and hydraulic components are sourced from qualified suppliers with material certificates. Upon arrival, our QC team verifies material grade, chemical composition and mechanical properties through spectrometer analysis and hardness testing — ensuring every batch meets our specifications before entering production.
High-manganese steel for jaw plates and cone liners is sourced from certified foundries with proven wear performance in hard rock applications.
Stage 2: In-Process Quality Control
During production, dedicated QC inspectors monitor critical operations including:
- CNC Machining: Dimensional inspection of key components (eccentric shafts, bearing bores, gear teeth) using coordinate measuring machines (CMM)
- Welding: Visual inspection plus ultrasonic (UT) and magnetic particle (MT) testing of critical welds on crusher frames and structural components
- Heat Treatment: Hardness testing and microstructure verification for wear-resistant components
- Assembly: Torque verification of bolted connections, bearing clearance measurement and gear mesh alignment checks
Stage 3: Non-Destructive Testing (NDT)
Critical structural components undergo rigorous non-destructive testing to detect any internal or surface defects that could lead to failure in service:
| NDT Method | Application |
|---|---|
| Ultrasonic Testing (UT) | Internal defect detection in castings, forgings and welds |
| Magnetic Particle (MT) | Surface crack detection in ferromagnetic components |
| Dye Penetrant (PT) | Surface defect detection in non-ferrous components |
| Hardness Testing | Verifying heat treatment results on wear parts |
Stage 4: Factory Acceptance Testing (FAT)
Before shipment, every WSHT machine undergoes a comprehensive factory acceptance test:
- Minimum 8 hours of no-load running test
- Vibration level measurement at all bearing points
- Bearing temperature monitoring during running test
- Noise level measurement
- Hydraulic system pressure and leakage testing (if applicable)
- Electrical system function test including safety interlocks
- Paint thickness and appearance inspection
- Spare parts and documentation verification against packing list
Test reports are provided to customers as part of the delivery documentation package.
Certifications & Compliance
WSHT holds the following international certifications, demonstrating our commitment to quality, safety and environmental responsibility:
- ISO 9001:2015 — Quality Management System certification
- CE Marking — Conformity with European Union health, safety and environmental protection standards
- ISO 14001:2015 — Environmental Management System
- OHSAS 18001 — Occupational Health and Safety Management
- Mine Safety Certification (MA) — China mining equipment safety approval
Warranty & After-Sales Support
WSHT provides a 12-month warranty on all equipment from the date of commissioning (or 18 months from shipment, whichever comes first). During the warranty period, we provide free replacement for defective parts due to manufacturing quality issues. Beyond warranty, WSHT offers:
- Lifetime technical support via phone, email and remote diagnostics
- Genuine spare parts supply with fast worldwide shipping
- On-site service visits for maintenance, inspection and troubleshooting
- Equipment overhaul and upgrade services
- Annual maintenance contracts for long-term operational support
Continuous Improvement
Quality at WSHT is a continuous journey, not a destination. We regularly collect feedback from customers in the field, analyze equipment performance data and implement design and manufacturing improvements. Customer complaints and field failure reports are reviewed by our quality committee — driving corrective actions and design enhancements that make each generation of WSHT equipment more reliable than the last.