At SIW, we produce more and deliver faster !

แผ่นพื้นสำเร็จรูปแบบกลวง หรือ (HOLLOW CORE)

08-06-2022

ผ่นพื้นสำเร็จรูปแบบกลวง หรือ (HOLLOW CORE) คือระบบแผ่นพื้นคอนกรีตอัดแรงแบบกลวง ผลิตจากคอนกรีตแห้งหรือ NO SLUMP CONCRETEที่มีกำลังอัดสูงถึง 350 กก/ตร.ซม. เสริมด้วยลวดเหล็กแรงดึงสูง ( PC WIRE ) หรือ ลวดเหล็กกล้าตีเกลียว ( PC STRAND ) สามารถผลิตความหนาได้ตั้งแต่ 6 ซม. ไปจนถึง 30 ซม. แผ่นพื้นสำเร็จรูปแบบกลวง (HOLLOW CORE) เหมาะสำหรับงานก่อสร้างอาคารประเภทต่างๆ เช่น อาคารพักอาศัย อาคารสำนักงาน ,โรงงานอุตสาหกรรม และห้างสรรพสินค้าโดยที่มี ความสามารถในการรับน้ำหนักบรรทุกปลอดภัยและ มีขนาดความกว้างและหนาให้เลือก ตามความเหมาะสมของการใช้งาน ส่วนความยาวนั้นสามารถผลิตได้ตามความต้องการ ที่จะนำไปใช้งาน สำหรับข้อดีที่เป็นจุดเด่นเลยของการใช้งานแผ่นพื้นสำเร็จรูปแบบกลวง (HOLLOW CORE) ก็คือ 1.น้ำหนักเบาช่วยประหยัดโครงสร้าง เช่น เสา, คาน , ฐานราก 2.แข็งแรง เพราะผลิตจากคอนกรีตกำลังอัดสูงทำให้แผ่นพื้น มีความทนทาน และคุณภาพสูง 3.รวดเร็วผลิตสำเร็จจากโรงงานลดเวลางานในการผูกเหล็กได้ 4.ประหยัด สะดวกไม่ต้องใช้ค้ำยันชั่วคราว และสิ่งที่จะขาดไม่ได้ และเป็นหัวใจสำคัญในการผลิต แผ่นพื้นสำเร็จรูปแบบกลวง (HOLLOW CORE) ที่จะทำให้ มีความแข็งแรงมากขึ้นนั้น จำเป็นต้องมี ลวดเหล็กกล้าเสริมคอนกรีตอัดแรง PC WIRE , PC STRAND ที่ใช้ในการผลิตแผ่นพื้นสำเร็จรูปแบบกลวง (HOLLOW CORE) และทางสยามลวดเอง ก็มีสินค้า PC WIRE และ PC STRAND ที่มีมาตรฐาน มอก.95-2540 และ 420-2540 ที่ได้รับความไว้วางใจ และเป็นที่ยอมรับมากกว่า 50 ประเทศทั่วโลก

Special Grade Earthquake-Resistant PC Strand

26-05-2025

Special Grade Earthquake-Resistant PC Strand - "A Safety Standard for Life Beyond Strength"In an earthquake situation, the very seconds when a structure begins to fail can determine life or death. Therefore, designing structures to delay "Collapse" becomes a critical factor in ensuring enough time for safe evacuation.At Siam Industrial Wire (SIW), we place great emphasis on every mechanical property of PC Strand, recognizing its importance as a key component in civil engineering design. Our special earthquake-resistant PC Strand is developed with a higher "Force Ratio" than standard products.• Force Ratio (the ratio between Breaking Load and Yield Load) in SIW’s PC Strand is higher than standard grades, meaning the steel does not fail immediately after reaching its yield point.• This allows the structure to withstand seismic forces longer, effectively "delaying" Collapse and giving occupants valuable time to evacuate safely.• Additionally, the increased "Plastic Deformation" of steel enabled by the high Force Ratio makes the product suitable for plasticity-based structural design, which emphasizes "Ductile Behavior".• And when exposed to seismic forces, this ductility causes serious and visible "Cracking" before total collapse occurs, serving as a warning sign that allows for timely intervention or evacuation.• It also helps reduce the risk of Nature Abrupt or sudden Collapse as plasticity-based design lowers the chance of instant concrete brittle failure — which in turn increases the likelihood of survival and reduces potential loss.SIW manufactures and exports special-grade PC Strand with a higher Force Ratio than standard requirements to Denmark, conforming to FprEN 10138-1&-3:2009 standards. These products are certified with the FI Marking of Denmark.At SIW, we are deeply aware of the impacts of natural disasters and the value of every life.

Committed to achieving Net Zero by 2050

19-09-2024

"At SIW, our Net Zero vision for 2050 is to lead the way in energy reduction, embrace recyclable materials, and champion environmental stewardship. Together, we build a sustainable legacy." Chaiyo Neanchaloei CMO - Siam Industrial Wire Co., Ltd.

SIW: Key Material Supplier for Bang Khun Thian–Ban Phaeo Expressway Project

08-07-2025

SIW plays a key role in supplying high-quality materials for Bang Khun Thian – Ban Phaeo Expressway Project, which is currently under construction. We are committed to using certified raw materials and products, backed by stringent quality control processes, to ensure the expressway’s structure is strong, durable, and safe—meeting all project requirements. Additionally, SIW works closely with the project team to ensure smooth and timely deliveries, fully supporting the project’s success.

SIW’s Uncompromising Quality Control – For World-Class Steel Wire.

10-06-2025

Confidence in Every Wire. Strength in Every Strand.SIW’s Uncompromising Quality Control – For World-Class Steel Wire.Because steel wire isn’t just a piece of metal—it’s the backbone of every construction project. It must deliver the highest strength and safety standards. That’s why SIW pays attention to every detail in the manufacturing process, ensuring each batch meets the highest expectations for quality and performance.✅ Tensile Strength TestingEach wire undergoes standardized tensile strength tests to ensure it can withstand high tension without snapping or becoming brittle. This enhances the long-term durability and structural integrity of your project.✅ Diameter PrecisionEvery wire is manufactured to exact specifications, allowing for precise material calculations, easy assembly, and reduced waste on-site.✅ Rust ProtectionCorrosion control is built into the production process, extending the life of your construction and protecting against premature degradation or failure.✅ Certified to Global StandardsSIW wire meets both national (TISI) and international (NATA, Australia) standards. Each batch comes with a full Quality Control Certificate—ready for use in any project with full traceability and peace of mind.SIW Steel Wire is trusted in major national projects across both public and private sectors, known for consistent quality and reliable service. Choose SIW’s thoroughly QC-tested wire for the strength and certainty your project—and future—deserve.

Concrete Roads vs. Asphalt Roads: Which is Better?

04-12-2024

Concrete Roads vs. Asphalt Roads: Which is Better? Selecting the right material for road construction is a critical decision that influences performance, longevity, and overall cost. Concrete and asphalt are the two primary options, each with distinct advantages and limitations. The key is to choose the material that best aligns with the intended application and environmental conditions.   Asphalt Roads Asphalt roads are known for their flexibility and smooth surface, offering a more comfortable driving experience. However, they are vulnerable to weather conditions, such as extreme heat or heavy rain, which accelerates deterioration. Typically, asphalt roads have an average lifespan of 10–15 years, making them suitable for general use and smaller projects. Advantages • Lower initial construction costs. • Quick construction time; roads can be used immediately after the asphalt is laid. • Simple and fast maintenance using resurfacing techniques (re-paving the road surface). Disadvantages • Faster degradation compared to concrete, particularly in areas with high temperatures or frequent flooding. • High maintenance costs due to the need for frequent repairs.   Concrete Roads Concrete roads consist of a mixture of cement, stone, sand, and reinforcement materials such as wire mesh, which enhance strength and durability. With an average lifespan of 20–40 years, concrete roads are ideal for large-scale projects and infrastructure that must withstand heavy loads, such as highways, bridges, and industrial zones. Advantages • Superior strength and durability, capable of handling heavy loads effectively. • Stable and smooth surface, with reduced risk of subsidence over time. • Long-term cost-efficiency due to lower maintenance requirements. Disadvantages • Higher initial construction costs. • Longer construction times, as the concrete must cure and gain strength before use. • Complex and costly maintenance processes for repairs.   Deciding between concrete and asphalt roads requires careful consideration of factors such as usage, budget, and environmental conditions. By aligning these factors with the project’s objectives, you can ensure the road meets its intended purpose effectively. Siam Industrial Wire offers premium-quality wire mesh steel grids tailored for concrete road and flooring applications. These products are manufactured in compliance with Thai Industrial Standards (TIS) and certified by the Thai Industrial Standards Institute (TISI). The offerings include TIS 737 for standard applications and TIS 926 for cane and rubber-specific uses, ensuring superior quality and performance. Wire Mesh : https://www.siw.co.th/th/product-detail/wire-mesh

SIW — The Lowest Carbon Emission Leader

26-11-2025

At SIW, we are Thailand’s leading experts in construction wire with the lowest carbon emissions in the steel wire industry. With carbon emissions of only 1.84 kgCO2 eq., significantly lower than the industry average of 2.46 kgCO2 eq. Our commitment to sustainability is certified by the Thailand Greenhouse Gas Management Organization (TGO).Strengthen your construction projects with SIW wire, a product that is eco-friendly and professionally reduces environmental impact.#SIW #EcoFriendlySteel #CarbonReduction

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: Filling out the form on the website: https://www.siw.co.th/en/contact-us Emailing: marketing@siw.co.th Calling the sales department directly 11. What if the wire has a problem? How do I make a claim?Customers can report product claims by: Filling out the form at: https://www.siw.co.th/en/contact-us Sending an email to: marketing@siw.co.th Contacting the sales or technical service department directly Checking the status online via SIW’s LINE Official Account: https://lin.ee/AJotXBNI 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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