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SIW-Testing Service Center for Prestressed Steel Wire Quality Testing
Perfect for manufacturers or users of PC Wire and PC Strand who require quality test results according to various standards. With over 30 years of expertise, SIW’s lab specializes in prestressed steel wire quality testing.
Convenient, Fast, and Cost-effective
ISO/IEC 17025 certified by NATA (National Association of Testing Authorities, Australia)
Detailed, Clear, and Traceable Reports at Every Step, with Analysis and Improvement Suggestions
Modern Equipment with High Efficiency and Precision of Over 99.95%
Flexible Testing Customization Based on Client Requirements, Including Specific Tests
Service Information:
1. Fatigue Testing Machine
Brand: Zwick Roell, Model: HA500
Testing Standards Supported: AS/NZS 4672.1, AS/NZS 4672.2, BS 5896, LNEC E 542, LNEC E 453, ISO 15630 Part 3, TIS 95-2540, TIS 420-2540
PC Wire: Maximum Load 500 kN, Sample Diameter 5 – 22 mm
PC Strand: Maximum Load 500 kN, Sample Diameter 5 – 22 mm
Deformed Bar: Maximum Load 500 kN, Sample Diameter 5 – 40 mm
2. Relaxation Testing Machine
Testing Standards Supported: AS/NZS 4672.1, AS/NZS 4672.2, ASTM A416/A416M, ASTM A421/A421M, ASTM A881, BS 5896, ISO 15630-3, JIS G3536, TIS 95-2540, TIS 420-2540
PC Wire: Maximum Load 300 kN, Sample Diameter 4 – 9 mm
PC Strand: Maximum Load 500 kN, Sample Diameter 9.3 – 18.0 mm
02-01-2025
PC Wire (Prestressed Concrete Wire) is a high-strength steel wire designed for use in construction projects that require reinforced concrete structures. The term "Prestressed" refers to the process of applying tension to the steel wire before pouring concrete around it. This technique enhances the concrete's ability to withstand tensile forces, effectively preventing cracks and ensuring structural durability. American Standards for PC Wire In the United States, the production and use of PC Wire must adhere to industry standards, particularly those established by the American Society for Testing and Materials (ASTM). Key standards include: Material Specifications: PC Wire is typically manufactured in accordance with ASTM A421 or ASTM A416, which define the requirements for high-carbon steel wires and strands used in prestressed concrete. Strength and Performance: These standards specify tensile strength, yield strength, and relaxation properties, ensuring the wire can handle high stress over extended periods. Dimensional Tolerances: Strict guidelines for diameter, straightness, and length ensure consistency and compatibility in construction projects. Testing Requirements: ASTM standards mandate rigorous testing, including tensile strength, elongation, and stress-relaxation tests, to guarantee performance and durability. Compliance with ASTM standards ensures that PC Wire meets the safety and quality requirements for critical infrastructure projects, giving engineers and contractors confidence in its use. Advantages of PC Wire High Strength: PC Wire offers superior tensile strength compared to regular steel, making it ideal for high-durability structural applications. Reduced Structural Weight: Its strength allows for a reduction in the volume of materials required for construction. Long Service Life: Reinforcing concrete with PC Wire minimizes the risk of cracking, prolonging the structure's lifespan. Standard Compliance: Manufacturing under ASTM standards ensures quality and safety in construction projects. Applications of PC Wire Bridges and Overpasses: Used to reinforce beams, increasing strength and minimizing cracking. Precast Concrete Slabs: Essential in high-rise building construction for enhanced load-bearing capacity. Piles and Retaining Walls: Suitable for structures that need to withstand soil or water pressure. Critical Infrastructure Projects: Commonly used in sports stadiums, large buildings, and underground structures requiring high stability. PC Wire is an indispensable material for modern construction, particularly in projects focused on strength, durability, and compliance with industry standards. Where to Purchase PC Wire? SIW is the largest producer and supplier of PC Wire in Southeast Asia, certified to meet international standards, including ASTM A421 and ASTM A416, and serving over 70 countries worldwide. With more than 50 years of experience, SIW delivers high-quality PC Wire to support a wide range of construction projects globally. In addition to its commitment to quality and reliability, SIW also prioritizes environmental sustainability. The company holds an Environmental Product Declaration (EPD) certification, ensuring its products are eco-friendly and contribute to sustainable construction practices. Choose SIW for high-quality PC Wire that meets global standards while supporting environmentally responsible solutions. https://www.siw.co.th/en/product-detail/pc-wire
10-11-2025
Why choose Testing Service from SIW ?Be confident in every test with world-class standards from SIW Testing Service.✔️ Internationaly RecognizedSiam Industrial Wire Laboratory Granted Standalone NATA Accreditation.✔️ Meet Standard in 70+ CountryCertified by over 100 world-class standards organizations.✔️ Convenient and Cost-EffectiveComprehensive services that save you both time and cost, with testing formats customizable to your specific needs.✔️ High-Perfermance MachineEquipped with modern testing machines, such as:Tensile Testing, Fatigue Testing, Relaxation Testing, Salt Spray Testing และ Chemical Analysis.Complete quality assurance that meets the needs of every industry, providing accuracy, speed, and value all in one place! ⚙️#SIW #TestingService #InternationalStandards #NATA #EPD #SustainableConstruction
08-10-2025
SIW manufactures high-quality products in compliance with international standards.We are committed to delivering premium products and services, and have been certified with ISO 9001, 45001, 14001, 50001, 27001, NATA, and ISO/IEC 17025 —covering quality management, environmental management, occupational health and safety, energy management, and information security management systems. In addition, SIW is dedicated to achieving NET ZERO by offering eco-friendly products and services under our sustainable development plan.This includes the use of EAF technology to recycle raw materials, reducing wastewater discharge, and installing solar rooftops. SIW not only operates in line with international standards but also prioritizes environmental responsibility for a sustainable future. #SIW #SustainableIndustry #NETZERO #InternationalStandards
16-12-2024
Construction Trends to Watch in 2025 Modern construction trends focus not only on developing advanced and robust structures but also on integrating clean and alternative energy sources to promote sustainability and reduce environmental impacts. These trends mark a significant step toward a sustainable future. Sustainable Construction The concept of sustainable construction is gaining significant traction in the construction industry as it aligns with ESG principles, emphasizing environmental impact reduction and efficient resource use. Examples include: Utilizing environmentally friendly construction materials. Implementing carbon-reduction techniques in construction processes. Managing waste effectively by sorting and recycling materials. This approach not only mitigates environmental impacts but also enhances resource efficiency, ensuring that modern structures meet current needs without depleting future resources. Digital Technology in Construction Digital technologies are transforming workflows in the construction industry, making them more efficient and sustainable. Examples include: IoT (Internet of Things): Real-time data collection devices for monitoring safety on construction sites. AI (Artificial Intelligence): Data analysis tools to optimize processes, such as safety risk assessments. BIM (Building Information Modeling): Enables precise structural designs and project management, minimizing material waste and construction errors. Other advanced technologies, such as drones for 3D site surveys and AR/VR for virtual design, reduce costs, improve safety, and facilitate accurate decision-making. Clean Energy The adoption of clean energy in construction is accelerating, particularly in large-scale projects aiming to minimize environmental impacts. Examples include: Solar Roofs: Lower energy costs and reduce greenhouse gas emissions. Wind Energy: Harnessing wind power to decrease reliance on fossil fuel-based electricity. Using clean energy not only lessens environmental impacts but also reduces energy costs, creating sustainable structures to meet future needs efficiently. Prefabrication Prefabricated construction is another key trend. This involves designing and manufacturing components such as pre-made walls, floor panels, columns, and roofs in controlled factory environments before assembling them on-site. Prefabrication speeds up construction, reduces site complexities, and ensures quality. SIW’s Commitment to Construction Trends SIW prioritizes key construction trends, such as employing AI to enhance operational efficiency, utilizing clean energy like solar power, and supporting sustainable construction through recycled materials from EAF (Electric Arc Furnace) technology. SIW has also achieved Green Industry Level 4 certification and is working towards its Net Zero carbon emission goal by 2050, advancing sustainability in all dimensions of the construction industry.
17-02-2023
In the construction of housing estates or condos at present, most of them have begun to use precast concrete widely instead of the traditional brick wall construction. Especially in the construction of large villages that require a large number of similar houses. Because it can help save resource costs in many aspects, such as time and manpower. It can also control standards better than brick construction. and today, Siam Steel Wire We will take a closer look at why precast concrete walls are popular among builders. And what should the residents do when using a house built from precast concrete? What is Precast Concrete? Precast Concrete is a part of the wall of a house or condo that will be precast in the factory before being moved for installation at the job site. This is different from the plastered brick wall that will be cast on site by the contractor. Precast Concrete has two main components, which are concrete texture and reinforcement with Wire Mesh or Cold Drawn Wire. Advantages of Precast Concrete1. Save construction time because the precast concrete wall can be cast and prepared in the factory during foundation assembly and then welded and assembled on-site.Unlike brick walls, construction only begins after the foundation has been assembled.2. Quality meets the same standard Because there is a casting from the factory, it does not depend on the skill of the mechanic or the weather at the job site.3. It requires much less labor than brick walls. because every part has been successfully cast from the factory and therefore can be placed in the house.4. High strength, so it can be used instead of columns or beams to support weight. because the structure consists of concrete and is also reinforced with Wire Mesh or Cold Drawn In addition, Siam Industrial Wire sells wire mesh and cold drawn from 4 mm to 12 mm, ready for use in precast concrete wall assembly, and it has met global standards, so you can be confident in its strength. more details: https://www.siw.co.th/en/product-detail/wire-mesh Caution1. Precast Concrete will not encounter cracks because the parts are cast in the same piece. But there may be a problem of water leakage along the edge of the wall joint if the connection is not tight enough.2. Wall drilling must be advised by engineers if it is supporting the weight of the structure.
16-12-2025
Our PC Strand for Segmental Box Girder bridge structures is suitable for actual operating conditions. It has passed relaxation testing at internationally standardized temperatures, ensuring reliable resistance to fatigue from long-term bridge use. Moreover, our product is certified with EPD (Environmental Product Declaration), reinforcing our commitment to environmentally friendly manufacturing.With these outstanding properties, PC Strand from SIW delivers strength, safety, and long-term durability for bridge girder structures.#PCStrand #PCWire #SIW #StandardWire #Bridge #SegmentalBoxGrider
20-05-2026
🎉 SIW เปิดตัว Facebook Page ประเทศเวียดนามอย่างเป็นทางการ เพื่อขยายการสื่อสารและสร้างความใกล้ชิดกับลูกค้า พันธมิตร และผู้เกี่ยวข้องในอุตสาหกรรมที่ประเทศเวียดนามมากยิ่งขึ้น ด้วยประสบการณ์ในการให้บริการลูกค้าในกว่า 30 ประเทศทั่วโลก SIW ยังคงมุ่งมั่นในการส่งมอบคุณภาพและความน่าเชื่อถือ เพื่อสนับสนุนการเติบโตของงานโครงสร้างพื้นฐานในระดับภูมิภาค 📲 ติดตาม Facebook SIW Vietnam ได้ที่นี่https://www.facebook.com/siwveitnam.marketing🌐 ดูรายละเอียดเพิ่มเติมทางเว็บไซต์https://www.siw.co.th/th 🎉 SIW Officially Launches Its Vietnam Facebook PageTo strengthen communication and build closer connections with customers, partners, and industry stakeholders in Vietnam, SIW is proud to officially launch the SIW Vietnam Facebook Page.With experience serving customers in more than 30 countries worldwide, SIW remains committed to delivering quality and reliability to support the growth of regional infrastructure development.📲 Follow SIW Vietnam on Facebook:https://lnkd.in/gT_ZUDZa🌐 Learn more about us:https://www.siw.co.th/en Click >>HERE<< to discover our Wire Mesh Product
03-09-2025
SIW ranks 7th globally and is the only EPD-certified high-strength steel wire manufacturer in Southeast Asia. With a carbon emission value of only 2.19 kg CO₂ eq. per unit of PC StrandSIW supports green building, reduces carbon emissions, and saves energy —a step forward toward a more sustainable future.
We are relentless in our pursuit for excellence in product quality and innovation. We take pride in being able to anticipate your needs and provide tailored solutions for each of your requirements. We strive to exceed expectations.