Pretreatment
Spray or dip washing, rinse stages and conversion coating decide adhesion. Ask how many stages, the tank material and whether wastewater treatment is included.
No DramaBuyer guide · Metal & CNC
A powder coating line price covers a list of stations, and two quotes are only comparable once you know which stations, fuels and permits each one leaves out.

01
Spray or dip washing, rinse stages and conversion coating decide adhesion. Ask how many stages, the tank material and whether wastewater treatment is included.
Dry-off and curing ovens run on gas, diesel or electricity. Ask the fuel, burner make and heat-up time.
Manual track, overhead chain or power and free. Ask the load per hook and the line speed range.
Ask for cyclone or cartridge recovery, colour change time and the spray gun make.
02
Send these with the enquiry. Without them, any number a factory gives you is a guess dressed as a quotation.
03
| Require this | A pass looks like |
|---|---|
| Coat your parts through the complete line at production speed. | Film thickness, adhesion and cure meet your coating specification. |
| Log the oven temperature on a part. | The part reaches cure temperature for the time the powder supplier specifies. |
| Do one colour change. | It takes no longer than the time in the contract. |
04
05
A batch booth with a box oven.
Add a shot blasting machine ahead of the booth.
06
We name the kind of source, how many and when, and never the factory. Listed prices are asking prices, not landed cost. Where we do not hold a fact we say so: that is a GAP, not an estimate.
07
Every machine we source in this area is on the Metal & CNC page. How a project runs, stage by stage, is on how it works, and what it costs is on pricing.
Straight answers
Station list, burner and gun makes, and pretreatment chemistry support. The line is a set of stations, so compare station by station.
Each station against the scope list, oven temperature log, recovery system, earthing of parts and booth, and interlocks.
A declaration for the assembled line, booth standards, and explosion protection papers. Local permits for burners and wastewater are yours.
Buying directly from China, usually you, with the duty to check the documents.
Contact
Send a machine, a quotation you want checked, or a question. We reply with what we would look at first.
Sent
A person reads every message. You will hear back within one working day.
Not sent
Please email info@nodramachina.com directly and we will pick it up from there.