SustainabilityNews

Frequently Asked Questions (FAQ)

06-05-2025

Here is the English translation of your full FAQ content:

Frequently Asked Questions (FAQ)

1. What products does SIW manufacture?
Siam Industrial Wire Co., Ltd. (SIW) manufactures and distributes high-quality prestressed steel wire products for construction and industrial applications. The main products include:

  • PC Strand: High-tensile 7-wire strand for prestressed concrete, used in bridges, building structures, and precast slabs.

  • PC Wire: High-tensile single wire ideal for smaller prestressed concrete applications, such as piles and floor slabs.

  • Wire Mesh: Ready-to-use welded steel mesh for general concrete reinforcement, such as roads and building floors.

  • Cold Drawn Wire: Low-carbon steel wire used for concrete reinforcement and further processing, e.g., tying wire.

  • Spring Wire: High-quality spring wire used in the automotive, furniture, and machinery industries.

2. What certifications do SIW products have?
SIW products are certified to international quality standards in more than 70 countries worldwide, including:

  • Thai Industrial Standard (TIS)

  • ASTM (United States)

  • JIS (Japan)

  • ISO/IEC 17025 by NATA (Australia) for the internal testing center

Read more: https://www.siw.co.th/en/iso-standard

3. Does SIW offer product testing services?
Yes. SIW has a state-of-the-art testing center certified to ISO/IEC 17025 by NATA (Australia), equipped with:

  • Fatigue Testing Machine: For testing material fatigue

  • Relaxation Testing Machine: For stress relaxation testing of wires

Supports testing to various international standards such as AS/NZS, ASTM, BS, ISO, JIS, and TIS.

Read more: https://www.siw.co.th/en/news-detail/testing-services

4. How long has SIW been in the industry?
SIW was established in 1994 and has over 30 years of experience in steel wire production. The company has grown steadily and formed joint ventures with leading companies such as Nichia Steel Works (Japan) and is part of the Tata Steel Group.

5. In which countries does SIW have customers?
SIW serves customers and partners in many regions worldwide, including:

  • Thailand

  • Australia

  • Taiwan

  • The Philippines

  • Indonesia

And over 60 countries that trust in the quality of SIW’s products and services.

Read more: https://www.siw.co.th/th/iso-standard

6. What are SIW’s sustainability and CSR policies?
SIW emphasizes sustainability and continuously carries out social contribution projects, such as:

  • Supporting people with disabilities and the elderly in communities

  • SIW We Care: COVID-19 relief project

  • Scholarships for well-behaved youth

  • SIW English Camp: English language development

  • Reforestation campaign: “Planting Trees, Planting Life for the King”

  • Green Market: Supporting local entrepreneurs and communities

Read more: https://www.siw.co.th/en/sustainability

7. How can I contact SIW?
You can reach SIW through the following channels:

  • Website: www.siw.co.th/en

  • Head Office:
    Rasa Tower A, 14th Floor, 555 Phahonyothin Road, Chatuchak, Bangkok 10900, Thailand

  • Factory:
    160 Moo 11, Nong Lalok Subdistrict, Ban Khai District, Rayong 21120, Thailand

  • Phone: +66 2937 0060

  • Email: marketing@siw.co.th

8. What domestic projects has SIW participated in?
SIW has been involved in major construction and infrastructure projects across Thailand, such as:

  • Mass transit and railway systems

  • Expressways and river-crossing bridges

  • High-rise buildings and real estate developments

  • Industrial plants and warehouses

Read more: https://www.siw.co.th/en/project

9. What international projects has SIW worked on?
SIW exports products for use in international projects, including:

  • Bridge and port projects in Australia

  • Commercial buildings in Taiwan

  • Infrastructure in the Philippines and Indonesia

  • Public transportation systems in the Middle East

Read more: https://www.siw.co.th/en/project

10. What are the ordering channels?
Customers can request quotations through:

11. What if the wire has a problem? How do I make a claim?
Customers can report product claims by:

12. How can I check product status?
You can track your product status by:

  • Contacting the sales department directly

  • Contacting the technical service team

  • Checking status online via LINE Official Account: https://lin.ee/AJotXBNI

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