{"id":3982,"date":"2026-04-29T08:55:22","date_gmt":"2026-04-29T06:55:22","guid":{"rendered":"https:\/\/steelelement.ee\/?p=3982"},"modified":"2026-04-29T08:55:22","modified_gmt":"2026-04-29T06:55:22","slug":"how-to-choose-steel-structure-supplier","status":"publish","type":"post","link":"https:\/\/steelelement.ee\/en\/how-to-choose-steel-structure-supplier\/","title":{"rendered":"How to choose a steel structure supplier: 7 criteria for clients"},"content":{"rendered":"<p>Choosing a steel structure supplier is one of the most critical decisions affecting the quality, budget, and timeline of an entire project. Whether you are planning an industrial building, warehouse, bridge, or shopping center \u2014 the supplier must meet specific criteria. This article helps you understand what to check and when to walk away.<\/p>\n<h2>1. Certifications and standards compliance<\/h2>\n<p>This is the most important criterion. Every steel structure manufacturer in the EU must hold an <strong>EN 1090-2 certificate<\/strong> (CE marking for steel structures). Also check:<\/p>\n<ul>\n<li><strong>EN 1090-2 Execution Class (EXC)<\/strong> \u2014 does the supplier hold EXC 2, EXC 3, or higher? Your project requires a specific class (see our separate <a href=\"https:\/\/steelelement.ee\/en\/en-1090-2-exc-2-vs-exc-3-comparison\/\">article on EXC classes<\/a>)<\/li>\n<li><strong>ISO 9001<\/strong> \u2014 quality management system (shows business processes are documented)<\/li>\n<li><strong>ISO 3834-2<\/strong> \u2014 welding quality requirements<\/li>\n<li><strong>Notified Body<\/strong> \u2014 verify the certificate was issued by a recognized body (e.g., T\u00dcV NORD, T\u00dcV Eesti, DNV)<\/li>\n<\/ul>\n<p>Red flag: if the supplier doesn\u2019t have an EN 1090 certificate, they cannot legally sell structures in the European Union.<\/p>\n<h2>2. Production capacity<\/h2>\n<p>Ask the supplier:<\/p>\n<ul>\n<li>How many tonnes of steel structures do you produce per month?<\/li>\n<li>What is the largest single project you have completed?<\/li>\n<li>Are both small (from 1 t) and large (over 500 t) projects welcome?<\/li>\n<\/ul>\n<p>Production capacity determines whether the supplier can meet your deadlines. For a large project, choose a manufacturer whose capacity is at least 3\u00d7 your scope.<\/p>\n<h2>3. Technology and equipment<\/h2>\n<p>Visit the supplier\u2019s factory if possible \u2014 is the equipment modern? Specifically ask about:<\/p>\n<ul>\n<li><strong>CNC cutting and bending machines<\/strong> (precision and speed)<\/li>\n<li><strong>Automatic welding robots<\/strong> (quality consistency)<\/li>\n<li><strong>Industrial paint booths<\/strong> (C3-C5 corrosion protection capability)<\/li>\n<li><strong>Sandblasting equipment<\/strong> (surface preparation for paint or zinc)<\/li>\n<li><strong>Quality control instruments<\/strong> (ultrasonic, X-ray, coordinate measuring machine)<\/li>\n<\/ul>\n<p>Outdated equipment means quality problems and longer lead times.<\/p>\n<h2>4. Team and qualifications<\/h2>\n<p>A qualified team is at least as important as equipment. Look at:<\/p>\n<ul>\n<li><strong>Welding engineer<\/strong> \u2014 qualification EWS, EWT, or IWE (International Welding Engineer \u2014 highest level, required for EXC 3)<\/li>\n<li><strong>Certified welders<\/strong> \u2014 EN 287 or EN ISO 9606 certificates for the material groups used in your project<\/li>\n<li><strong>Designer experience<\/strong> \u2014 does the supplier have an in-house engineering office or use subcontractors?<\/li>\n<li><strong>Installer experience<\/strong> \u2014 do they have on-site experience and required certifications (e.g., safety training)<\/li>\n<\/ul>\n<h2>5. References and previous projects<\/h2>\n<p>Ask the supplier for a list of previous projects, especially in your sector (industry, logistics, energy, etc.). Look for:<\/p>\n<ul>\n<li>Are projects of comparable scope and complexity?<\/li>\n<li>Can you contact previous clients for feedback?<\/li>\n<li>Does the company website have a portfolio or list of clients?<\/li>\n<\/ul>\n<p>Red flag: if the supplier cannot show comparable previous projects or refuses to share contacts.<\/p>\n<h2>6. Quote accuracy and transparency<\/h2>\n<p>A good quote includes:<\/p>\n<ul>\n<li>Clear price structure \u2014 steel material, processing, installation as separate items<\/li>\n<li>Steel grade and standard used (e.g., S355JR per EN 10025-2)<\/li>\n<li>Surface treatment type and corrosion category (C3, C4, or C5)<\/li>\n<li>Clear timelines \u2014 design, manufacturing, installation<\/li>\n<li>Warranty duration and coverage<\/li>\n<li>Payment terms<\/li>\n<\/ul>\n<p>Red flag: a too-short, vague quote (&#8220;steel structure \u2014 XYZ \u20ac&#8221;). It indicates the supplier hasn\u2019t reviewed the project.<\/p>\n<h2>7. Price, payment and warranty terms<\/h2>\n<p>Price matters, but not as the only criterion:<\/p>\n<ul>\n<li><strong>The cheapest offer is often problematic<\/strong> \u2014 it may indicate inferior material, shorter certifications, or missing approvals<\/li>\n<li><strong>Payment schedule<\/strong> \u2014 typically 30% advance, 50% after manufacturing, 20% after installation and acceptance<\/li>\n<li><strong>Warranty<\/strong> \u2014 Estonian legal minimum is 2 years; many suppliers offer 5 or 10 \u2014 ask about it<\/li>\n<\/ul>\n<h2>Client checklist<\/h2>\n<p>Before signing the contract, verify the supplier has:<\/p>\n<ul>\n<li>&#x2611; EN 1090-2 certificate with the correct execution class (EXC 2, EXC 3, or as required)<\/li>\n<li>&#x2611; ISO 9001 and ISO 3834-2 certificates<\/li>\n<li>&#x2611; Certified welding engineer (at least EWS, IWE for EXC 3)<\/li>\n<li>&#x2611; Production capacity at least 2\u00d7 your project scope<\/li>\n<li>&#x2611; At least 3 comparable previous projects<\/li>\n<li>&#x2611; Detailed quote with all price components<\/li>\n<li>&#x2611; Clear timelines and payment schedule<\/li>\n<li>&#x2611; At least a 5-year warranty<\/li>\n<\/ul>\n<h2>Steel Element and your project<\/h2>\n<p>Steel Element O\u00dc meets all the above criteria:<\/p>\n<ul>\n<li>EN 1090-2:2018+A1:2024 <strong>EXC 3<\/strong> certificate (T\u00dcV Eesti)<\/li>\n<li>ISO 9001:2015 (T\u00dcV NORD), ISO 3834-2:2021 (T\u00dcV Eesti)<\/li>\n<li>IWE-qualified welding engineer Pavel Kopanev<\/li>\n<li>Production capacity 300 t\/month<\/li>\n<li>30 experienced specialists \u2014 designers, certified welders, installers<\/li>\n<li>See our <a href=\"https:\/\/steelelement.ee\/en\/certificates\/\">certificates and PDFs<\/a><\/li>\n<\/ul>\n<h2>Planning a steel project? Send an inquiry<\/h2>\n<p>Send us a brief description of your project \u2014 initial offer in 1\u20133 business days. The first consultation is free \u2014 recommendations on materials, corrosion protection, and timelines. <a href=\"https:\/\/steelelement.ee\/en\/contact\/\">Contact us \u00bb<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Choosing a steel structure supplier is one of the most critical decisions affecting the quality, budget, and timeline of an entire project. Whether you are planning an industrial building, warehouse, bridge, or shopping center \u2014 the supplier must meet specific criteria. This article helps you understand what to check and when to walk away. 1. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3982","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/posts\/3982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/comments?post=3982"}],"version-history":[{"count":1,"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/posts\/3982\/revisions"}],"predecessor-version":[{"id":3983,"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/posts\/3982\/revisions\/3983"}],"wp:attachment":[{"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/media?parent=3982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/categories?post=3982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelelement.ee\/en\/wp-json\/wp\/v2\/tags?post=3982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}