Zinc Plating • Heat Treatment • Phosphating in Samut Sakhon
Finishing for small parts — screws, nuts, bolts, washers and all hardware — for factories and shops in Samut Sakhon. 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 Samut Sakhon — it is not a branch or a facility in Samut Sakhon.
Customers in Samut Sakhon 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 Samut Sakhon.
Why factories in Samut Sakhon 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 Samut Sakhon 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 Samut Sakhon customers
Every plating and heat-treatment process under one roof
The distance from Samut Sakhon 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 — Samut Sakhon
How do you handle work from Samut Sakhon?+
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 Samut Sakhon — contact our team to agree on a delivery schedule.
Nearby provinces in Central Thailand
About this province
What is manufactured here
The factory mix concentrated in this province decides which finishes get ordered most.
- food & seafood processing
- steel & metalworking
- machinery
- general manufacturing & SMEs
Named estates and factory districts
Real place names in the province. IEAT-designated estates are marked.
- Sinsakhon Industrial EstateIEAT-designatedBangkok Port (Khlong Toei)
- สินสาคร
- มหาชัย
- กระทุ่มแบน
- อ้อมน้อย
- บ้านแพ้ว
- ท่าจีน
- นิคมอุตสาหกรรมสมุทรสาคร
- มหาราชนคร
Parts we most often take from this area
สกรู · น็อต · โบลต์ · แหวนและสลักงานปริมาณมาก
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 | |
|---|---|---|---|---|---|
| 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 |
| Marine & Fishing Industry | 4.8 / 8.8 · A4-70 where the buyer specifies stainless | 480–1,000 h NSS requested — a ranking, not a service life | ≤ ~32 HRC preferred in chloride service | S45C, SWCH10B21, SUS304 / SUS316 (buyer-supplied) | ISO 9227 · ISO 4042 · ISO 2081 · ASTM B633 |
| Fastener Manufacturers — Toll Processing | bolts 4.8–12.9 · nuts class 8 / 10 / 12 | to the number your own customer specifies | the class band, plus a surface-versus-core comparison | SWCH10B21, SWCH10B33, SCM435, SCr440, S45C | ISO 898-1 · ISO 898-2 · ISO 6157 · ISO 4042 |
Failure modes to watch on this kind of work
Questions we get from this province
- Which estates in Samut Sakhon do you collect from?
- In Samut Sakhon we take work from Sinsakhon Industrial Estate, and from factory districts such as สินสาคร, มหาชัย, กระทุ่มแบน, อ้อมน้อย, บ้านแพ้ว, ท่าจีน. Plants in this area are concentrated in Machinery, Marine & Fishing Industry, Fastener Manufacturers — Toll Processing, Steel Structure & Fabrication; parts come to the Samut Sakhon works and go back with a test certificate per lot.
- Do you handle export work from Samut Sakhon?
- Yes. Estates in Samut Sakhon sit near Bangkok Port. Where the end customer needs paperwork, we issue hardness and salt spray certificates to ISO 9227 / ASTM B117 per lot under ISO 9001:2015.
- What specification does work from Samut Sakhon usually have to meet?
- It follows the local industry mix. For Machinery, common in Samut Sakhon, the usual call-out is property class 8.8 / 10.9 / 12.9, hardness 30–55 HRC and 96–240 h NSS corrosion resistance, on SCM435, SUJ2, SK5, spring steel.
- What hardness do the grades from Samut Sakhon reach?
- The grades seen most from this area are SCM435, SCM440, SUJ2, SK85 (SK5), SKS3, SUP9. 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.
Route into the plant
Nearest port: Bangkok Port (Khlong Toei)