Zinc Plating • Heat Treatment • Phosphating in Chachoengsao
Finishing for small parts — screws, nuts, bolts, washers and all hardware — for factories and shops in Chachoengsao. ISO 9001:2015 with salt-spray test certificates.
We run one plant, and it is in Samut Sakhon. This page covers collection and delivery for customers in Chachoengsao — it is not a branch or a facility in Chachoengsao.
Customers in Chachoengsao can send work to V.S. Heat Treatment any business day. We specialize in high-volume small parts such as screws, nuts, bolts, washers, pins and rivets, with capacity up to 2,000 tonnes per month and in-house lab quality control on every lot.
Industrial estates & zones we serve
V.S. Heat Treatment serves factories and manufacturers in the industrial estates and zones of Chachoengsao.
Why factories in Chachoengsao choose us
Small-part specialists
Processes built specifically for screws, nuts, bolts and washers — minimizing parts sticking together, clogged threads and uneven coating.
Nationwide delivery
Pickup and delivery to plants in Chachoengsao through partner carriers, on time, with full piece counts on every lot.
Certified results
Every job ships with hardness (HRC) and salt-spray results to ASTM B117, ready to pass on to your end customer.
Tunable specs
Choose plating color, coating thickness and hardness level to match how the part is actually used.
Services for Chachoengsao customers
Every plating and heat-treatment process under one roof
The distance from Chachoengsao to our plant in Samut Sakhon is no obstacle. Most customers use parcel freight or their own factory transport. We help coordinate logistics and report job status at every step — contact our team to plan a pickup/delivery cycle that fits your volume.
FAQ — Chachoengsao
How do you handle work from Chachoengsao?+
Send parts via parcel freight or your factory transport to Samut Sakhon. Once finished, we ship them back with test certificates. Ask about pickup cycles via LINE or phone.
Do you accept small low-volume jobs?+
Yes — flexible minimums suit both mass production and sample/small lots. Contact us for a quote based on your real volume.
Do you provide quality certificates?+
Yes. Every lot includes hardness and salt-spray (corrosion) results under our ISO 9001:2015 system.
How long does it take?+
It depends on part type and volume, including transit to and from Chachoengsao — contact our team to agree on a delivery schedule.
About this province
What is manufactured here
The factory mix concentrated in this province decides which finishes get ordered most.
- the Eastern Economic Corridor (EEC)
- automotive & parts
- electronics
- steel & metalworking
Named estates and factory districts
Real place names in the province. IEAT-designated estates are marked.
- Gateway City Industrial EstateIEAT-designatedEEC zone
- Wellgrow Industrial EstateIEAT-designatedEEC zone
- TFD Industrial EstateIEAT-designatedEEC zone
- Chachoengsao Blue Tech City Industrial EstateIEAT-designatedEEC zone
- เกตเวย์ซิตี้
- 304
- ทีเอฟดี
- เวลโกรว์
- ทีเอฟดี 2
- เอเพ็กซ์กรีน ฉะเชิงเทรา
Parts we most often take from this area
โบลต์ยานยนต์ · สกรูอิเล็กทรอนิกส์ · น็อต · ชิ้นส่วนปั๊ม
What work from this province has to meet
These figures come from the industries concentrated here, not from a national average.
| Property class | Salt spray | Hardness | Materials seen | Standards | |
|---|---|---|---|---|---|
| Automotive & Parts | 8.8 / 10.9 / 12.9 | 240–720 h NSS | 28–45 HRC | SCM435, SCM440, S45C, 10B21 | ISO 898-1 · ISO 4042 · ISO 9227 · JIS |
| Electronics | 4.8 / 8.8 | 48–120 h NSS | ≤ ~40 HRC | carbon steel, stainless | ISO 4042 · RoHS/REACH · ISO 9227 |
| Machinery | 8.8 / 10.9 / 12.9 | 96–240 h NSS | 30–55 HRC | SCM435, SUJ2, SK5, spring steel | ISO 898-1 · ISO 6157 · DIN |
Failure modes to watch on this kind of work
Questions we get from this province
- Which estates in Chachoengsao do you collect from?
- In Chachoengsao we take work from Gateway City Industrial Estate, Wellgrow Industrial Estate, TFD Industrial Estate, Chachoengsao Blue Tech City Industrial Estate, and from factory districts such as เกตเวย์ซิตี้, 304, ทีเอฟดี, เวลโกรว์, ทีเอฟดี 2, เอเพ็กซ์กรีน ฉะเชิงเทรา. Plants in this area are concentrated in Automotive & Parts, Electronics, Machinery, EV & Battery Assembly Fasteners, Solar Mounting & Racking Hardware, Fastener Manufacturers — Toll Processing, Steel Structure & Fabrication; parts come to the Samut Sakhon works and go back with a test certificate per lot.
- What specification does work from Chachoengsao usually have to meet?
- It follows the local industry mix. For Automotive & Parts, common in Chachoengsao, the usual call-out is property class 8.8 / 10.9 / 12.9, hardness 28–45 HRC and 240–720 h NSS corrosion resistance, on SCM435, SCM440, S45C, 10B21.
- What hardness do the grades from Chachoengsao reach?
- The grades seen most from this area are SCM435, SCM440, SWCH10B21, SWCH10B33, S45C, S20C. Attainable hardness varies with grade and section, and the value specified in service after tempering is always below the as-quenched ceiling — the per-grade pages carry both numbers.