Small-part finishing for factories in Navanakorn
Navanakorn is the northern counterweight to the eastern estates: electronics and machinery on Phahonyothin Road, sending small screws and machinery hardware down the western ring to us.
We run one plant, and it is in Samut Sakhon. This page covers collection and delivery for customers in Pathum Thani — it is not a branch or a facility in Pathum Thani.
This estate at a glance
| Province | Pathum Thani |
|---|---|
| Road corridor | Phahonyothin Road (Highway 1) |
| Nearest sea port | Bangkok Port (Khlong Toei) |
| IEAT-designated | — |
| Eastern Economic Corridor | No |
| Industry mix | electronics, machinery, general manufacturing & SMEs |
IEAT-designated covers both estates operated by the Industrial Estate Authority of Thailand and joint-operation estates run with a private developer. A dash means we could not confirm a single status for the whole area — some of these names describe a factory district rather than one designated estate.
A dash in the port row means the estate sits inland between two ports and we will not guess which is nearer. Nothing on this page is a distance, a drive time or a delivery-time promise.
Reviewed:
What this estate is
Navanakorn is on Phahonyothin Road in Khlong Luang, Pathum Thani, north of Bangkok, and it grew as a privately developed industrial zone rather than as a classic IEAT estate — which is why the IEAT row on this page is blank. We could not confirm a single current designation for it, and an unverified yes in that column would be worth less than an honest dash. Its industry mix is electronics, machinery and general manufacturing.
What this estate asks of a small part
An electronics-and-machinery estate sends two part families that share almost nothing. The screws and washers are small, thin-plated and judged on appearance and thread fit; the machinery bolts, pins and springs are judged on hardness, wear and dimensional stability after hardening. The practical consequence is that a single customer here often needs two different quotations and two different test regimes, and trying to cover both with one blanket specification is where the arguments start. We split them at quotation.
Services for factories in this estate
Hardening, Cr3+ zinc plating, phosphate coating and in-house lab testing, all on small parts at bulk volume.
Navanakorn takes Phahonyothin Road, and the nearest sea port by geography is Bangkok Port at Khlong Toei. Parts reach our Samut Sakhon plant down the western ring and the Rama II corridor rather than through central Bangkok. Collection and delivery are arranged per lot with sales — we answer a quote within 24 hours, and we do not publish transit or completion times.
Questions we get from this estate
Is Navanakorn an IEAT industrial estate?+
We have left that field blank rather than assert it. Navanakorn developed as a privately promoted industrial zone and we could not confirm its current designation under the IEAT system to the standard we hold the rest of this table to. For finishing work the answer changes nothing; for incentives and permits it might, so verify it with the zone office.
We need both plating and hardening on the same part. What is the order?+
Hardening first, then plating — a plated part cannot be heat treated afterwards without destroying the coating. Where the hardness or property class crosses the ISO 4042 trigger, de-embrittlement baking follows the plating as soon as possible. If the drawing also has a dimensional tolerance, tell us, because both the hardening and the deposit thickness sit inside it.