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High-strength steel wires for prestressed concrete can change their structural properties immediately when exposed to heat. They may become brittle and break when pulled. To prevent damage, follow these precautions:
1. Avoid sparks from welding or cutting metal.
If welding or cutting near the wire, cover it with a wet cloth to protect it from sparks or heat.
2. Check welding cables to ensure they are in good condition.
As damaged cables may scratch or mark the wires during handling.
3. Do not use welding wire to cut tensioned wires.
As sparks can cause damage or break the wire.
SteelWire ConcreteConstruction SafetyFirst ConstructionSafety
30-10-2025
We are committed to continuously enhancing our capabilities in high-quality steel wire production, with an annual capacity of over 215,000 tons, meeting the needs of customers both domestically and internationally. With world-class logistics, real-time tracking,and internationally certified quality management systems,you can trust every step from our factory to your hands. 🚛💨 We strive to deliver the highest quality products to build lasting confidence across all industries.#SIW #QuickDelivery #HighQualitySteel #GlobalStandards #IndustrialExcellence
11-02-2026
Ever had tangled wires wasting your time? Just check one arrow and your work gets so much easier !If you’ve ever struggled with wires getting stuck, snapping back, or tangling, make sure you’re pulling in the right direction.💡 Pro tip: PC Strand and Compacted PC Wire coils have clear directional markings. Simply pull along the green arrow, and the wire comes out neatly, reducing snap-back risk and saving work time.For PC Strand, a strand frame can be used to keep the wire organized and prevent tangling during use. For Compacted PC Wire, use a wire coop to prevent the wire from tangling during use.Contact us through any channel today.Contact: 081-170-2571Line: @siwthailandWebsite: www.siw.co.th#PCStrand #PCWire #CompactedCoilPCWire #UnwindingTechniques
19-08-2025
Steel Truss Bridge vs. Concrete Box Girder Bridge – What’s the Difference? 🌉Choosing the right bridge structure is not just about aesthetics — it's a decision about strength, lifespan, and long-term value.Steel Truss Bridge (Truss Bridge)Structural weight: Light, suitable for small foundationsSpan: Can be very long (100–500 m)Strength: Strong – resists both compression and tension using triangular truss to distribute forcesMaterial cost: Medium to high (custom-made, almost no repairs needed)Construction complexity: High – assembled from many partsMaintenance: Requires rust protection and frequent inspection of rivets or boltsConcrete Box Girder BridgeStructural Weight: Heavier than truss bridges but lighter than traditional solid beam bridges, while still offering high strengthSpan Length: Medium to long spans (40–200 m)Strength: Handles compressive, tensile, and torsional forces effectivelyMaterial Cost: Moderate to high (especially when custom-fabricated)Construction Complexity: Moderate to high – requires special formworkMaintenance: Minimal, though internal maintenance can be challenging💡 Quick Summary:Truss Bridge: Light, suitable for extra-long spans, good for areas with limited foundations — but needs rust careBox Girder Concrete Bridge: Strong, durable, ideal for large-scale and national infrastructure — with low maintenance
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
05-07-2023
How deep should the pile be drilled to ensure safety?Piles are an essential component used to support and transfer the weight and load of a building to the ground. The load transfer of a pile occurs through the frictional resistance between the pile surface and the surrounding soil or through direct load transfer to the underlying soil or bedrock. The main purpose of using piles is to prevent the building or structure from settling or sinking into the ground. For small-scale buildings, the piles used are generally shorter in length and fewer in number. However, larger buildings may require a greater number of piles or longer piles to transfer the load to deeper layers of soil and bear a higher load capacity. If the pile extends to the level of hard soil, it can directly transfer the load from the building to the hard soil layer. How do piles bear the load?Piles bear the load through two main types of forces: "skin friction" and "end bearing." 1. Skin Friction: This force is generated by the frictional resistance between the pile surface and the surrounding soil. The magnitude of this force depends on the type of soil (each soil type has different skin friction properties) and the characteristics of the pile surface. 2. End Bearing: This force occurs at the pile tip, where the pile rests on a firm soil layer. The magnitude of this force depends on the type of soil, such as the presence of voids between soil particles. Soils with more voids have a lower load-bearing capacity, while compacted sands have a higher load-bearing capacity. In general pile design, for skin friction piles, the focus is on the size and length of the pile to generate sufficient lateral friction to support the applied load. For end bearing piles, the design aims to have the pile sit on a compacted sand layer. Types of piles used in construction can be broadly categorized into three main types based on their manufacturing and usage characteristics: 1. Spun Piles: These piles are produced by spinning concrete in a mold at high speed. This process results in a dense and strong concrete core with embedded steel reinforcement. Spun piles can be driven or drilled and are suitable for high-rise buildings that require strength to withstand wind loads and earthquakes. 2. Bored Piles: Bored piles are constructed by drilling a hole and then placing steel reinforcement and concrete into the drilled hole. They come in various lengths and sizes as specified. Bored piles are suitable for projects that require high strength and load capacity. 3. Prestressed Concrete (PC) Piles: PC piles are manufactured by placing concrete into a mold that contains prestressed steel wires or strands. The concrete is then compressed to enhance its strength. PC piles are used in construction projects that require high strength and durability in various environmental conditions. Siam Wire Industries (SIW) offers PC Wire and PC Strand, which are the primary components used in the production of prestressed concrete piles. SIW has gained recognition in over 50 countries worldwide and provides post-sales services, including on-site wire pulling tests for customers. These services ensure customer confidence in using SIW's prestressed wire products. PC Wire: [Link to SIW's PC Wire product page] (https://www.siw.co.th/en/product-detail/pc-wire) PC Strand: [Link to SIW's PC Strand product page] (https://www.siw.co.en/th/product-detail/pc-strand)
21-07-2025
More than a manufacturer — we are the standard the world trusts.SIW is a leading producer of PC Strand and PC Wire, trusted by global-scale projects.We go beyond products — focusing on quality, safety, and service excellence.That’s why SIW holds the No.1 market share in Thailand’s prestressed steel wire industry.
29-04-2025
Another project that uses SIW's prestressed steel wire (PC Strand) is the Motorway M6 in Thailand.hashtag#SIW ’s prestressed steel wire (PC Strand) is used in major projects around the world, certified by many certificates with sales in over 70 countries. It is also an environmentally conscious product, made from raw wire materials primarily composed of recycled materials.hashtag#expressway hashtag#motorway
30-09-2025
🚫 Don’t paint over rust!Painting directly on rust allows it to keep eating the steel underneath, weakens the structure, and causes the paint to peel or blister.✅ The right way:1. Remove rust until bare metal2. Apply anti-rust primer3. Paint over againResult = Safe, Strong, Durable 💪#AntiRust #ProTips #SteelCoating #SafeStructures
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