What to check, in order of how often it's faked
| Check | Good | Shortcut to catch |
|---|---|---|
| Steel plate thickness | Matches drawing; measured with calipers at edges | Undersized plate — a 12 mm spec delivered at 10 mm |
| Welds | Continuous, ground where loaded, no undercut or porosity | Skip welding on load paths; paint hiding poor prep |
| Machining | Bearing seats and shafts to tolerance; bores round | Hand-fitted seats that walk bearings within months |
| Bearings & motors | Named brands, verifiable markings | Unmarked "equivalents" — ask for the brand list in the contract |
| Wear parts material | Mn13/Mn18 or high-chrome as quoted, with certificates | Generic castings with no material cert |
| Electrics | Cabinet wired to your voltage, components branded, diagram matches | Undersized cabling and missing protection |
The two tests that matter
- No-load run: bearings to temperature, vibration and noise checked over at least 2–4 hours. A machine that can't idle cleanly won't run loaded.
- Load test with material: the only honest capacity evidence. Ask for it on video with the ammeter visible — current draw tells the truth that edited footage hides.
Who should inspect
You, on a video call at minimum; your agent or a third party (SGS, BV, TÜV) for anything above single-machine scope. Third-party inspection before the balance payment is standard practice, and any factory that resists it has told you something. We accept it on every order — see how our own QC runs.
Related guides
Factory-direct from Gongyi
- Built in Gongyi. Machines are welded, machined and assembled at our own production base in Gongyi, Henan — no trading-company margin.
- Test-run before shipment. Every line is trial-run with material before it leaves the workshop; you receive video evidence with the inspection report.
- Spare parts from stock. Wear parts and standard components ship with the machine, with factory stock behind every order.
- 12-month warranty. Core machinery is covered for 12 months, backed by lifetime technical support from our engineers.
Get a factory quotation
Send us your raw material, target capacity and destination port. Our engineers will reply with a matched configuration, ex-works price and production schedule.
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