{"id":22923,"date":"2026-05-18T15:38:30","date_gmt":"2026-05-18T18:38:30","guid":{"rendered":"https:\/\/www.grupoacocearense.com.br\/?p=22923"},"modified":"2026-05-18T15:38:30","modified_gmt":"2026-05-18T18:38:30","slug":"metalon","status":"publish","type":"post","link":"https:\/\/www.grupoacocearense.com.br\/en\/metalon\/","title":{"rendered":"10 common mistakes when using metal tubing in metalwork and construction."},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Our technical experience in the steel industry has allowed us to observe that utilizing metal tubing in construction and metalwork projects can boost quality and even accelerate timelines.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">However, we frequent construction sites, visit workshops, and, in conversations with professionals, we notice recurring errors that harm the structure, increase costs, and delay deadlines.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Identifying and correcting these mistakes is fundamental to ensuring durability, safety, and good aesthetic presentation in construction projects. In this article, we address in detail the ten most delicate points when it comes to using structural tubing, one of the great allies in [construction]. <\/span><a href=\"https:\/\/www.grupoacocearense.com.br\/en\/entenda-o-uso-de-metais-na-construcao-civil\/\"><span style=\"font-weight: 400;\">civil construction<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Along the way, we will share not only the technical successes we have learned, but also provide guidance, based on practice, on how to avoid problems that lead to rework or waste. <\/span><span style=\"font-weight: 400;\">Avoid losses by understanding where most people go wrong.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Whether you&#039;re a metalworker, builder, or buyer, ensure the best performance in your steel project. Let&#039;s learn about and correct the most common mistakes?<\/span><\/p>\n<h2><b>1. Incorrect choice of profile thickness.<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">One of the most recurring problems is in <\/span><b>selecting the wrong thickness<\/b><span style=\"font-weight: 400;\"> For tubular profiles. Often, due to apparent cost savings or haste, thinner tubes are chosen than recommended for the type of load or span expected. This can seriously compromise structural safety, leading to deformations or even ruptures.<\/span><\/p>\n<p><b>The thickness of the tube directly influences its ability to withstand weight, tensile, compressive, and bending forces.<\/b><span style=\"font-weight: 400;\"> Therefore, the design must take into account prior structural calculations, including the specific characteristics of each use: gates, railings, mezzanines, roofs, or even metal furniture, for example.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Thin tubes can be suitable for lightweight structures or decorative enclosures;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">For spans, pillars, beams, and elements that make up the main structure, always use thicker-walled pipes.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">We always suggest consulting manufacturers&#039; technical data sheets, as well as learning about the variations of metal profiles and their actual applications. This avoids future replacements or accidents.<\/span><\/p>\n<h2><b>2. Lack of proper structural calculations.<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">It&#039;s common to find projects executed by &quot;eyeballing&quot; it, often aggravated by overconfidence or haste. Underestimating the importance of structural calculations can increase risks for both people and the investment made. Some direct problems include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Deformations (in scales, crossbeams, pillars);<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cracks at support points;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Partial or total collapse of the structure under load conditions outside of the expected range.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Our recommendation is to rely on professionals who understand not only the technical standards, but also the physics of the structures. <\/span><b>The calculation must take into account the type of use, the environment, distributed and concentrated load, as well as wind and weather conditions in outdoor areas. <\/b><span style=\"font-weight: 400;\">It&#039;s not enough to just appear robust. You need to guarantee safety until the end of the project&#039;s lifespan.<\/span><\/p>\n<h2><b>3. Improper welding application<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Welding profiles is a step that requires knowledge of preparation, processes, and quality control. Poorly executed welding can be indicated by cracks, weak points, lack of penetration, and even weakening due to high heat concentration.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Common mistakes in this process include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wall thickness incompatible with the welding process;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Absence of chamfering when required in thicker profiles;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Lack of penetration, resulting in cold and brittle welds;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Excessive heat causes warping or further thinning of the pipe wall;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not remove any residue (oils, paints, rust) before welding.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">When working with structural tubing for metalwork, choosing the right electrode, current, speed, and welding technique prevents rework and future reinforcement interventions.<\/span><\/p>\n<h2><b>4. Failure in anti-corrosion treatment<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Steel, despite all its advantages in terms of mechanical strength, is not immune to the environment. In coastal or tropical regions, such as those served by the A\u00e7o Cearense Group, corrosion is a factor to consider.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A common mistake is neglecting or insufficiently applying rust protection. Some common causes for this mistake are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Leaving pipes exposed to rain and sun before painting or galvanizing;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Selecting paints that are unsuitable for the type of environment (indoor or outdoor);<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not remove welding residue, dust, or oils before surface treatment;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Skimping on primer, or not applying the recommended number of coats.<\/span><\/li>\n<\/ul>\n<p><b>Proper anti-corrosion treatment extends the lifespan of the pipe by decades, maintains its aesthetics, and avoids recurring costs associated with corrective maintenance.<\/b><\/p>\n<h2><b>5. Poorly executed cuts and lack of precision.<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Sometimes, rushing through steps results in crooked cuts, burrs, misaligned joints, or material waste.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Using inappropriate tools, worn-out discs, or failing to properly calibrate machines are errors that accumulate throughout the process and increase waste. Learn about some problems caused by imprecise cuts:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Poor fit in joints and welds, generating extra stress;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Accumulation of gaps and overlaps, impairing the appearance and performance of the part;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Frequent rework is necessary, exceeding the initial budget.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The tip is <\/span><b>Always use templates, measure twice, and cut only once.<\/b><span style=\"font-weight: 400;\">. Sharp tools, appropriate discs, and constant team training prevent financial losses and rework.<\/span><\/p>\n<h2><b>6. Choosing the material without considering the application.<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">We often find projects where square or rectangular tubing is used solely based on price, without analyzing whether it&#039;s the most suitable for the intended purpose. There are profiles designed for enclosures, gates, roofing, support structures, mezzanines, etc.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The composition, surface finish, and even dimensional tolerances vary widely. The consequences are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reduced lifespan;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Greater tendency to warping or cracking;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Compromised appearance and potential dissatisfaction for the end customer.<\/span><\/li>\n<\/ul>\n<p><b>Analyze the specific characteristics of each project, the exhibition environment, and the type of load to then choose the most suitable metal tube.<\/b><\/p>\n<h2><b>7. Improper storage of the tubes<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">During visits to construction sites and warehouses, we have come across profiles stored outdoors, leaning directly against the ground, exposed to moisture and accumulated dirt.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This causes oxidation, warping, and in more severe cases, almost total loss of material. Store the <\/span><a href=\"https:\/\/www.grupoacocearense.com.br\/en\/tipos-de-tubos-e-metalons-da-aco-cearense-conheca-as-variacoes-e-suas-aplicacoes\/\"><span style=\"font-weight: 400;\">steel pipe<\/span><\/a><span style=\"font-weight: 400;\"> It requires attention to essential points:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A dry, well-ventilated environment, away from the ground;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Protection against rain and direct sunlight;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stacks neatly, avoiding direct contact between galvanized and regular pipes;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rotating batches ensures that old waste does not remain longer than necessary.<\/span><\/li>\n<\/ul>\n<p><b>Proper storage protects your investment and prevents unpleasant surprises when you begin assembly.<\/b><\/p>\n<h2><b>8. Disregard thermal expansion and movement.<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Steel expands and contracts with temperature variations, especially in regions with intense sun, such as Cear\u00e1, Par\u00e1, and Tocantins, areas of operation for the A\u00e7o Cearense Group. Ignoring this phenomenon results in structures that creak, welds come loose, masonry cracks occur, and misalignments happen after a short time. Learn about some common mistakes:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not leave any leeway for thermal expansion;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fixtures that are too rigid at meeting points;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ignore expansion joints in larger spans.<\/span><\/li>\n<\/ul>\n<p><b>The project must anticipate these variations, especially in enclosures, walkways, and exposed areas, in order to guarantee the integrity and accommodate the natural movements of the material. <\/b><span style=\"font-weight: 400;\">The structure needs to move freely to last longer and maintain its safety.<\/span><\/p>\n<h2><b>9. Ignoring technical standards and manufacturer recommendations.<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">In the heat of the construction site or during small jobs, sometimes people neglect consulting the manufacturer&#039;s technical standards or recommendations. This can accentuate structural risks, reduce performance guarantees, and even make certifications impossible when material traceability is required. Among the problems are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use of profiles outside of dimensional tolerances;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inappropriate combination of accessories and complements;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Welding, cutting, or finishing work that does not meet the required standards.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Standards such as ABNT NBR, specific to metal construction, provide minimum safety and quality parameters. Following them is, above all, about ensuring the best possible final result.<\/span><\/p>\n<h2><b>10. Waste of materials due to lack of planning.<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Often, orders and cuts are initiated without checking the project plans, leading to unnecessary damage and leftover materials. Inadequate use of pipe lengths, errors in quantity calculations, or even losses due to rework greatly increase the cost of the project. Recurring errors include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Miscalculating the measurements of the modules;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Forgetting to account for minimal waste or natural losses during cutting and welding;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ignoring the logical assembly sequence may require disassembly and re-execution.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">As a best practice suggested by our technical team:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Daily cutting and assembly checklist before starting work;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Training employees on how to read blueprints;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Adopting modular planning, with a focus on making the best use of components, reducing waste and rework.<\/span><\/li>\n<\/ul>\n<p><b>Planning saves time and money and ensures satisfaction from purchase to project completion.<\/b><\/p>\n<h2><b>Apply knowledge, avoid losses, and build with confidence.<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Over the years, working with steel and metal pipes, we&#039;ve realized that the difference between a successful project and one riddled with complications lies not only in the material itself, but primarily in how it is understood, handled, and applied.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Knowing the common mistakes in <\/span><a href=\"https:\/\/www.grupoacocearense.com.br\/en\/metalon-quais-as-principais-caracteristicas-e-aplicacoes\/\"><span style=\"font-weight: 400;\">application of metalon<\/span><\/a><span style=\"font-weight: 400;\"> This is the first major step towards avoiding rework and achieving high-quality results.<\/span><b>.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">When we choose the right supplier, respect the standards, and use correct procedures, we minimize negative surprises and maximize the lifespan of the structures. It&#039;s not just about meeting deadlines, but about investing in safety, durability, and quality workmanship \u2013 everything we value in every delivery.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Was this article about the use of metal tubing in metalworking and construction helpful? Be sure to follow Grupo A\u00e7o Cearense on social media \u2014 <\/span><a href=\"https:\/\/www.instagram.com\/grupoacocearense\/\"><span style=\"font-weight: 400;\">Instagram<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.facebook.com\/grupoacocearense\"><span style=\"font-weight: 400;\">Facebook<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.linkedin.com\/company\/grupo-a%C3%A7o-cearense\/\"><span style=\"font-weight: 400;\">LinkedIn<\/span><\/a><span style=\"font-weight: 400;\"> and <\/span><a href=\"https:\/\/www.youtube.com\/grupoacocearense\"><span style=\"font-weight: 400;\">Youtube<\/span><\/a><span style=\"font-weight: 400;\"> \u2014 and stay up-to-date with content and tips about the market!\u00a0<\/span><\/p>\n<h2><b>Frequently asked questions about common mistakes when using metal tubing in metalwork and construction.<\/b><\/h2>\n<h3><b>How to avoid mistakes when welding metal tubing?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">To avoid welding failures on metal pipes, always follow these precautions: properly prepare the surfaces, remove residue and oil, adjust the equipment according to the material thickness, and choose compatible electrodes. In addition, perform controlled welds, without excessive heat, and check for good penetration, especially in thicker pipes.\u00a0<\/span><\/p>\n<h3><b>What is the best type of metal tubing for structural purposes?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The most suitable profile for structures is one dimensioned according to structural calculations, taking into account load, span, and environmental conditions. In general, it is recommended to use tubes with a thickness greater than 2 mm to support weight and mechanical stresses; however, the ideal choice will depend on the function (beam, column, crossbeam, etc.) and the type of environment (indoor or outdoor).\u00a0<\/span><\/p>\n<h3><b>Does Metalon rust easily?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes, steel can rust if it doesn&#039;t receive proper anti-corrosion treatment, especially in humid or saline regions. To prevent premature oxidation, apply appropriate paint, primer, or opt for galvanizing, and always store the pipes in dry, covered locations.\u00a0<\/span><\/p>\n<h3><b>How to calculate the quantity of metal tubing?<\/b><\/h3>\n<p><b>The calculation is based on a detailed analysis of the project, the number of modules, the total length of the spans, and the estimated losses due to cuts and fittings.<\/b><span style=\"font-weight: 400;\"> Make an accurate count of all the parts to be manufactured, draw the cutting sequence, and add a minimum safety margin.\u00a0<\/span><\/p>\n<h3><b>What precautions should be taken when storing metal tubing?<\/b><\/h3>\n<p><b>Store the pipes in a dry, well-ventilated place, protected from moisture, elevating them with slats or pallets to avoid direct contact with the ground.<\/b><span style=\"font-weight: 400;\"> Keep them covered to prevent exposure to sun and rain, and organize the batches to facilitate rotation and inventory control. <\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Our technical journey in the steel sector has allowed us to observe that the utilization of metalon(\u2026)<\/p>","protected":false},"author":8,"featured_media":22924,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[28],"tags":[],"class_list":["post-22923","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gestao"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - 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