Hot season
Up to around 40 °C. Ventilation openings, ridge vents and insulated roofs (by your Thai contractor) need frame support; thermal movement is detailed in long buildings.
End-to-end solution for Thailand
Consult. Design. Fabricate. Ship CIF to Thailand.
One World Steel team takes your steel building from the first sketch to a Thai port: engineering for Thai codes and climate, fabrication in our certified factory, and CIF shipping to Laem Chabang, Bangkok, Map Ta Phut or Songkhla, with the documents your Thai engineer, customs broker and erector need.
2018exporting steel structures to Thailand
2,500 Tfabrication capacity per month
3–5 dayssailing from southern Vietnam to Laem Chabang
0%import duty with ATIGA Form D (HS 7308)
Why one partner
Fewer interfaces, fewer surprises on a Thai site
Most delays on imported steel buildings happen between suppliers: a design that ignores the Thai permit set, shop drawings that do not match the anchor bolts already cast, steel that arrives out of erection order, or a shipment held at the port for a missing certificate.
With World Steel the people who consult on your brief also design the frame, fabricate it in our own factory and book the vessel. One contract, one programme, one point of contact, and every stage is planned around how projects are permitted, delivered and built in Thailand.
- Design loads checked against Thai DPT wind and seismic standards for your province
- Drawing set ready for your Thai licensed engineer to review and sign for the permit
- Packed and marked by erection sequence, shipped CIF to the port that suits your site
- Thai- and English-speaking project support from enquiry to handover
Four stages, one team
From brief to Thai port in four stages
Choose a stage to see what we do, what is specific to Thailand, and what you receive.
01 · Brief, budget and route to site
Consulting
We start with your site, use and budget, not with a catalogue. Our engineers review the brief, compare structural options and give you a realistic budget, programme and delivery route before you commit.
Thailand-specific
- Location check: DPT wind zone, seismic zone and coastal exposure for your province
- Industrial estate rules (setbacks, coverage, heights) and the IEAT or local permit route
- PEB or conventional steel, crane and mezzanine options, rooftop solar allowance
- CIF or DDP, and which Thai port gives the shortest, safest truck run to site
- Programme planned around the rainy season (mid-May to October)
02 · Engineered for Thai codes and climate
Design
Every building is designed as one 3D model: frames, purlins, bracing, connections and anchor bolts. We design to AISC 360, AISI S100 and MBMA practice, with loads from ASCE 7 checked against the Thai DPT standards for your exact location.
Thailand-specific
- Wind to DPT 1311-50 (มยผ. 1311-50), seismic to DPT 1301/1302-61 where your province requires it
- Column reactions and anchor bolt plan for your Thai foundation engineer, including soft Bangkok clay sites on piles
- Approval drawings and calculations formatted for review and signature by a Thai licensed engineer (กว.)
- Coating system matched to the site: inland, coastal EEC or petrochemical zones
- Roof slopes, gutter and solar panel loads for monsoon rain and Thai rooftop PV
03 · Certified factory, controlled quality
Fabrication
Your steel is cut, welded, blasted and painted in our 20,000 m² factory in Tay Ninh, about 100 km from the deep-sea port of Cai Mep. We book your fabrication slot when you order and inspect every member before it leaves.
Thailand-specific
- Material to ASTM/JIS grades with mill certificates; TIS-equivalent grades on request
- Shot blasting to Sa 2.5 and paint systems for Thai corrosivity (ISO 12944), with TOA or Jotun
- Intumescent fire protection where Thai regulations require a fire rating
- Every piece marked to the erection drawings, bundled by erection zone
- Factory inspection open to you or your third-party inspector, or by live video
04 · To the Thai port that suits your site
CIF shipping
We handle export clearance, sea freight and cargo insurance to Laem Chabang, Bangkok (Khlong Toei), Map Ta Phut or Songkhla. You receive the full document set before the vessel arrives, so your customs broker can clear the cargo in one to two days.
Thailand-specific
- Port chosen for your site: Laem Chabang for the EEC and most of the country, Bangkok for city sites, Map Ta Phut for Rayong, Songkhla for the South
- ATIGA Form D certificate of origin with every shipment: 0% import duty on HS 7308, 7% VAT on import
- 40' HC containers for most members; flat racks or break-bulk for long or heavy pieces
- Member lengths set at design stage to suit Thai trailers, so most deliveries need no special road permits
- DDP available if you want us to clear Thai customs and truck to site
Thai codes and permits
Designed to pass the Thai permit process
A steel building in Thailand needs a construction permit and drawings signed by a Thai licensed engineer. We design so that your engineer can review and sign without rework.
| Standard / law | What it covers | How we apply it |
|---|---|---|
| Building Control Act B.E. 2522 | Construction permit from the local authority, or from IEAT inside IEAT estates | Drawing set and calculations prepared for the permit submission |
| Engineering Profession Act B.E. 2542 | Structural drawings signed by a licensed Thai civil engineer (กว.) | Your engineer reviews our design; we answer every comment |
| DPT 1311-50 (มยผ. 1311-50) | Wind loads by zone, with a typhoon factor for parts of the South | Wind zone and exposure of your site set in the design model |
| DPT 1301/1302-61 (มยผ. 1301/1302-61) | Seismic loads, with higher hazard in the North and West and site amplification on soft Bangkok clay | Seismic check where your province requires it under the Ministerial Regulation |
| TIS 1227 · TIS 1228 (มอก.) | Thai standards for hot-rolled and cold-formed structural steel | Equivalent ASTM/JIS grades with mill certificates; TIS where specified |
| Factory Act B.E. 2535 | Factory licence (ร.ง.4) for factory buildings | Building data, areas and layouts provided for your application |
Your permit path, step by step
- 1
Site and estate check
Zoning, estate rules, wind and seismic zone
- 2
Approval drawings
GA, anchor bolts, reactions, calculations
- 3
Thai engineer review
Your licensed engineer reviews and signs
- 4
Permit submission
Local authority or IEAT, by you or your contractor
- 5
Shop drawings and fabrication
Released once the design is approved
Thai climate
Built for heat, monsoon rain and coastal air
Thailand is tropical all year, but conditions differ a lot between Chiang Mai, the EEC coast and Songkhla. We design and plan for the climate at your site.
Three seasons, three design questions
Rainy season
South-west monsoon with short, intense storms. We size roof slopes, gutters and downpipe openings, plan erection windows and pack steel for open storage on site.
Cool season
Dry in the Centre and North and the best time to erect; the lower Gulf coast (Songkhla, Nakhon Si Thammarat) has its heaviest rain from October to December.
What this means for your building
Monsoon-aware programme
We plan fabrication and shipping so steel lands for the dry months where possible, and pack it to survive weeks of open storage if not.
Coating by exposure
Inland sites, coastal EEC estates and Map Ta Phut petrochemical areas get different paint systems, from ISO 12944 C2 to C5.
Solar-ready roofs
Rooftop solar is now standard on Thai factories. We allow for PV panel loads and fixing rails in the purlin design from day one.
Uplift and edges
Roof edges, corners and large door openings get extra attention for wind uplift, especially in the South and on exposed coasts.
Typical exposure and coating
SiteExposure (ISO 12944)Typical system
Central plains, North, Isan (inland)C2 – C3Zinc-rich or epoxy primer + finish; galvanised purlins
EEC and Gulf coast within a few km of the seaC4Epoxy zinc + epoxy MIO + polyurethane
Map Ta Phut and other petrochemical or marine sitesC5High-build epoxy system or hot-dip galvanising, specified per project
Ports and logistics
From our factory to your site in Thailand
Short sea routes across the Gulf of Thailand make Vietnam one of the closest steel sources for Thai projects. Under CIF our responsibility runs to the Thai port; we plan the rest with your broker and haulier.
Factory, Tay Ninh
Packed by erection zone, loaded into containers or flat racks
Export clearance
Vietnamese customs, Form D and insurance arranged by us
Sea freight
Cai Mep or Cat Lai to a Thai port in 3–5 days
Thai customs
Your broker clears in 1–2 days with our documents (DDP: we do it)
Truck to site
Delivered in erection order to your site
Map geometry: svg-maps (CC BY 4.0)
Thai ports we ship to
- Laem Chabang PortDeep-sea port
Thailand’s main deep-sea container port in Chonburi, at the heart of the EEC. Most World Steel shipments arrive here: 3–5 days’ sailing from southern Vietnam, with flat-rack and break-bulk handling for long members.
- Bangkok Port (Khlong Toei)River port
River port on the Chao Phraya in central Bangkok – the shortest trucking distance to Bangkok, Samut Prakan, Pathum Thani and Ayutthaya sites. Suitable for standard containers.
- Map Ta Phut PortDeep-sea port
Industrial deep-sea port in Rayong serving the Map Ta Phut petrochemical complex and the Rayong estates – ideal for heavy industrial and energy projects in the EEC.
- Songkhla Deep Sea PortDeep-sea port
The main Gulf-side port of southern Thailand – the CIF port for projects in Songkhla, Hat Yai, Pattani, Yala, Narathiwat, Satun and Phatthalung.
Recommended CIF port by destination
| Destination | Recommended port | Road distance from that port | From Laem Chabang |
|---|---|---|---|
| ChonburiEastern Thailand & EEC | Laem Chabang Port | 45 km | – |
| RayongEastern Thailand & EEC | Map Ta Phut Port | 20 km | 80 km |
| ChachoengsaoEastern Thailand & EEC | Laem Chabang Port | 90 km | – |
| PrachinburiEastern Thailand & EEC | Laem Chabang Port | 155 km | – |
| BangkokCentral Thailand | Bangkok Port (Khlong Toei) | 20 km | 110 km |
| Samut PrakanCentral Thailand | Bangkok Port (Khlong Toei) | 20 km | 85 km |
| Phra Nakhon Si AyutthayaCentral Thailand | Laem Chabang Port | 190 km | – |
| SaraburiCentral Thailand | Laem Chabang Port | 210 km | – |
| Nakhon RatchasimaNortheast (Isan) | Laem Chabang Port | 325 km | – |
| Khon KaenNortheast (Isan) | Laem Chabang Port | 555 km | – |
| Chiang MaiNorthern Thailand | Laem Chabang Port | 865 km | – |
| SongkhlaSouthern Thailand | Songkhla Deep Sea Port | 20 km | 850 km |
Laem Chabang is the default port: deep water, frequent sailings and flat-rack handling. Road distances are estimates (straight line × 1.3); the final port is chosen per project with your haulier.
Truck lengths
Members are sized to standard Thai trailers. Anything longer is flagged in design so the route, permits and escorts are planned early.
Bangkok time windows
Heavy trucks face time restrictions in inner Bangkok. City deliveries are booked into the permitted windows or delivered via Bangkok Port.
Estate access
Most industrial estates require gate passes and delivery slots. We share the packing list early so your team can book them.
Industrial estates
Where Thai industry builds
Most of our Thai projects are in or near industrial estates. We know their approval rules, site access and the ports that serve them.
- 42Eastern Thailand & EEC
- 20Central Thailand
- 3Western Thailand
- 2Southern Thailand
- 1Northern Thailand
- estates in our directory
In the EEC (Chonburi, Rayong, Chachoengsao)
IEAT joint-venture estate
Wellgrow Industrial Estate
ChachoengsaoWellgrowIEAT joint-venture estateGateway City Industrial Estate
ChachoengsaoIEAT joint-venture estateTFD Industrial Estate
ChachoengsaoTFDIEAT joint-venture estate304 Park 2 Industrial Estate Chachoengsao
Chachoengsao304 Industrial ParkIEAT joint-venture estateWincoast Industrial Park
ChachoengsaoWincoastIEAT joint-venture estateAmata City Chonburi Industrial Estate
ChonburiAmata Corporation PCLTypical programme
A 30 × 60 m warehouse, from order to Thai port
Indicative programme for a standard clear-span warehouse of about 50 T. Your project programme is confirmed with the quotation.
Week 1Week 2Week 3Week 4Week 5Week 6Week 7Week 8Week 9Week 10
Consulting and quotation
Approval drawings and Thai engineer review
Shop drawings and material
Fabrication, coating and QC
Export clearance and sea freight
Thai customs and trucking
Erection by your Thai erector usually starts within days of delivery.
Who does what
Clear scope under CIF
- World Steel
- World Steel supports
- World Steel under DDP
- Client
| Task | World Steel | You / your Thai team |
|---|---|---|
| Consulting, budget and value engineering | World Steel | |
| Structural design, approval and shop drawings | World Steel | |
| Review and signature by a Thai licensed engineer, permit | World Steel supports | Client |
| Foundations and anchor bolt setting | World Steel supports | Client |
| Fabrication, coating, QC and packing | World Steel | |
| Export clearance, sea freight and insurance to Thai port | World Steel | |
| Thai customs clearance, 7% VAT, trucking to site | World Steel under DDP | Client |
| Erection by a Thai erector | World Steel supports | Client |
| Roofing, cladding and building finishes | Client |
Proven in Thailand
Thai projects delivered with this solution
Warehouses, factories, retail and hangars across Thailand since 2018, each designed, fabricated and shipped by World Steel.
Flagship2024
Thailand
M&D Warehouse
Warehouse · 2,000 T
14
Flagship2021
Thailand
7-ELEVEN
Commercial & retail building · 791 T
5
Flagship2026
Thailand
Warehouse 36×300M
Warehouse · 10,800 m²
5
Flagship2025
Thailand
Warehouse 38×135
Warehouse · 5,130 m²
6
Flagship2018
Thailand
Hangar
Aircraft hangar · 200 T
5
Flagship2020
Thailand
SKB Marry Mart
Commercial & retail building
7Next steps
Go deeper into each part of the solution
Quote from your drawings
Send drawings or a sketch and get a priced proposal.
Quotation design
How we size your building before you order.
Design after contract
From approval drawings to shop drawings.
Quality control
Every inspection stage in our factory.
PEB Studio
Configure a building and see it in 3D.
Become a partner
For Thai contractors, erectors and agents.
Talk to the people who will run your project
Send your site location, building size and use. We reply with a budget, a programme and the best port for your site.
Request a quotationFAQ
Questions Thai clients ask us
Can your drawings be used for a Thai construction permit?
Yes. We prepare approval drawings and design calculations so that a Thai licensed civil engineer can review and sign them for the permit, from the local authority or from IEAT inside IEAT estates. Loads are checked against DPT 1311-50 for wind and DPT 1301/1302-61 for seismic where required.
Which Thai port should my steel go to?
Laem Chabang serves the EEC and most of the country, Bangkok Port (Khlong Toei) is closest for Bangkok sites, Map Ta Phut suits Rayong, and Songkhla serves the South. We recommend the port with the shortest, simplest truck run to your site.
Do I pay import duty on steel structures from Vietnam?
Steel structures (HS 7308) of Vietnamese origin can enter Thailand at 0% duty under ATIGA with a Form D certificate, which we issue with every shipment. Import VAT of 7% applies. Your customs broker confirms the final classification.
What is not included under CIF?
Under CIF our responsibility ends when the cargo arrives at the Thai port. Thai customs clearance, VAT, port charges at destination and trucking are arranged by you or your broker. If you prefer one price to site, ask for DDP.
Do you erect the building in Thailand?
Erection is done by a Thai erector, appointed by you or chosen from our partner network. We provide erection drawings, packing lists by erection mark and technical support, and can send a supervisor on request.
How does the rainy season affect the programme?
Fabrication and shipping are not affected, but site work is. We plan delivery around your foundation and erection windows and pack steel for open storage, so a wet month does not damage materials or lose time.
Plan your Thai steel building with one team
Consulting, design, fabrication and CIF shipping, quoted together.