{"id":5608,"date":"2026-04-22T10:19:51","date_gmt":"2026-04-22T02:19:51","guid":{"rendered":"https:\/\/www.bomissteel.com\/?post_type=product&p=5608"},"modified":"2026-05-19T16:38:38","modified_gmt":"2026-05-19T08:38:38","slug":"s550gd-galvanized-steel","status":"publish","type":"product","link":"https:\/\/www.bomissteel.com\/kk\/product\/s550gd-galvanized-steel\/","title":{"rendered":"S550GD Galvanized Steel"},"content":{"rendered":"

\u0421\u0438\u043f\u0430\u0442\u0442\u0430\u043c\u0430<\/strong><\/h2>\n
S550GD is a high-strength hot-dip galvanized S350GD+Z<\/a> structural steel (material number 1.0531) as defined in EU standard EN 10346.<\/div>\n
<\/div>\n
Description of each digit in the designation:<\/div>\n
S: Structural steel, used for load-bearing components.<\/div>\n
550: Minimum yield strength 550 MPa (Rp0.2\u2265550).<\/div>\n
G: Hot-dip galvanized.<\/div>\n
D: Dual-phase \/ Hot-dip galvanizing code<\/a>, indicating the hot-dip galvanizing process.<\/div>\n
<\/div>\n
Complete designation (common):<\/div>\n
S550GD+Z: Hot-dip galvanized (pure zinc coating).<\/div>\n
S550GD+AZ: Aluminized zinc<\/a> (55% Al + 43.4% Zn + 1.6% Si).<\/div>\n
S550GD+ZM: Zinc-aluminum-magnesium galvanized, with enhanced corrosion resistance.<\/div>\n

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Category\u00a0<\/strong><\/td>\n\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u00a0<\/strong><\/td>\nBOMIS Specification\u00a0<\/strong><\/td>\n<\/tr>\n<\/thead>\n
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Dimensional Specifications<\/b> 1 \u043c\u043c \u0430\u043b\u044e\u043c\u0438\u043d\u0438\u0439 \u043f\u0430\u0440\u0430\u0493\u044b<\/p>\n

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\n<\/td>\n

\u049a\u0430\u043b\u044b\u04a3\u0434\u044b\u049b<\/b><\/span><\/td>\n0.13 mm \u2013 6.0 mm (Precision tolerance controlled)<\/span><\/td>\n<\/tr>\n
<\/td>\n\u0415\u043d\u0456<\/b><\/span><\/td>\nUp to 1500 mm<\/span><\/td>\n<\/tr>\n
<\/td>\n\u04b0\u0437\u044b\u043d\u0434\u044b\u0493\u044b<\/b><\/span><\/td>\nCoil, or custom cut-to-length<\/span><\/td>\n<\/tr>\n
<\/td>\nAvailable Forms<\/b><\/span><\/td>\nSteel Coil, Flat Sheet, Corrugated Roofing Sheet, Slit Strip<\/span><\/td>\n<\/tr>\n
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Coating & Surface<\/b><\/p>\n

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\n<\/td>\n

Manufacturing Standard<\/b><\/span><\/td>\nEN 10346<\/span><\/td>\n<\/tr>\n
<\/td>\n\u0426\u0438\u043d\u043a \u049b\u0430\u043f\u0442\u0430\u043c\u0430\u0441\u044b\u043d\u044b\u04a3 \u043c\u0430\u0441\u0441\u0430\u0441\u044b<\/b><\/span><\/td>\nZ30 \u2013 Z275 (30 g\/m\u00b2 to 275 g\/m\u00b2)<\/span><\/td>\n<\/tr>\n
<\/td>\nSurface Spangle<\/b><\/span><\/td>\nLarge Spangle, Regular Spangle, Small Spangle, Zero Spangle<\/span><\/td>\n<\/tr>\n
<\/td>\n\u0411\u0435\u0442\u0442\u0456 \u04e9\u04a3\u0434\u0435\u0443<\/b><\/span><\/td>\nChromated \/ Passivation, Anti-Fingerprint (AFP), Oiled, Dry<\/span><\/td>\n<\/tr>\n
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\n<\/td>\n

Yield Strength<\/b><\/span><\/td>\n\u2265 550 MPa<\/span><\/td>\n<\/tr>\n
<\/td>\nTensile Strength<\/b><\/span><\/td>\n560 \u2013 750 MPa<\/span><\/td>\n<\/tr>\n
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Mill & Logistics Capabilities<\/b><\/p>\n

 <\/p>\n

\n<\/td>\n

Coil ID (Inner Diameter)<\/b><\/span><\/td>\n508 \u043c\u043c \/ 610 \u043c\u043c<\/span><\/td>\n<\/tr>\n
<\/td>\n\u041e\u0440\u0430\u043c \u0441\u0430\u043b\u043c\u0430\u0493\u044b<\/b><\/span><\/td>\n2 \u2013 5 MT (Metric Tons)<\/span><\/td>\n<\/tr>\n
<\/td>\n\u049a\u043e\u0441\u044b\u043b\u0493\u0430\u043d \u049b\u04b1\u043d\u044b \u0431\u0430\u0440 \u04e9\u04a3\u0434\u0435\u0443<\/b><\/span><\/td>\nSlitting, Shearing, Punching, Profiling, Embossing<\/span><\/td>\n<\/tr>\n
<\/td>\nMinimum Order Quantity<\/b><\/span><\/td>\n18 MT (One 20ft Container)<\/span><\/td>\n<\/tr>\n
<\/td>\n\u041e\u0440\u044b\u043d\u0434\u0430\u0443 \u043c\u0435\u0440\u0437\u0456\u043c\u0456<\/b><\/span><\/td>\n7 \u2013 35 Days (Subject to mill production schedule)<\/span><\/td>\n<\/tr>\n
<\/td>\nSeaworthy Packaging<\/b><\/span><\/td>\nMill standard export packing (Waterproof kraft paper, plastic film, galvanized steel envelope, securely strapped)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Benefits of Using S550GD Galvanized Steel<\/h2>\n

Maximizing Structural Performance and Longevity<\/strong><\/p>\n

When engineering demanding structural projects, utilizing BOMIS S550GD high-strength steel offers an immediate competitive advantage. The superior yield strength allows for significant material down-gauging\u2014reducing overall structural weight and optimizing your freight costs without compromising stress resistance.<\/p>\n

To ensure your projects endure the test of time, we manufacture this high-strength substrate with highly customizable coating options. Beyond traditional zinc, BOMIS supplies premium Aluminum-Zinc (AZ) and advanced Zinc-Aluminum-Magnesium (ZAM) finishes, specifically formulated to resist corrosion in severe exposure environments.
\nWhile engineering-grade steel represents a premium upfront investment, its proven ability to last 3 to 5 times longer than conventional mild steel drastically minimizes future maintenance, delivering an unmatched Total Cost of Ownership (TCO) for your clients.<\/p>\n

\"S550GD
The S550GD Galvanized Steel is currently in production.<\/figcaption><\/figure>\n
\"
S550GD Galvanized Steel<\/figcaption><\/figure>\n
<\/div>\n

Applications of S550GD Galvanized Steel<\/h2>\n

Renewable Energy & Critical Infrastructure<\/strong>
\nEngineered to withstand severe wind and snow loads, our S550GD steel is the preferred substrate for utility-scale solar photovoltaic (PV) mounting systems (including high-stress purlins and main beams). Its superior rigidity also makes it ideal for 5G telecommunication towers and high-voltage transmission structures, ensuring decades of stability in outdoor environments.<\/p>\n

Automotive & Commercial Transportation<\/strong>
\nCapitalizing on the exceptional strength-to-weight ratio, automotive manufacturers utilize our high-strength coils to achieve vehicle lightweighting without sacrificing safety. It is widely specified for commercial truck and trailer chassis, heavy-duty body frames, EV (Electric Vehicle) battery pack enclosures, automotive seat frames, and impact-resistant bumper beams.<\/p>\n

Heavy-Duty Industrial & Logistics Storage<\/strong>
\nDesigned for maximum load-bearing performance and fatigue resistance, this grade is highly suited for industrial mega-warehousing and heavy-duty pallet racking systems. Furthermore, it provides the rugged durability required for manufacturing construction machinery, agricultural equipment, large-scale HVAC ventilation ductwork, and structural enclosures for electrical control cabinets.<\/p>\n

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Frequently Asked Questions about S550GD Galvanized Steel<\/b><\/h2>\n

Q1: What is the primary advantage of choosing S550GD over standard DX51D for my project?<\/b><\/p>\n

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A:<\/b> The core advantage is material down-gauging<\/b>. Standard DX51D is for bending and profiling, with a yield strength of around 140 MPa. S550GD is structural-grade steel with a guaranteed yield strength of \u2265550 MPa. This allows engineers to use significantly thinner steel sheets to achieve the exact same load-bearing capacity, reducing the total structural weight and saving considerably on raw material and ocean freight costs.<\/p>\n<\/blockquote>\n

Q2: Can your S550GD coils withstand high-humidity or coastal environments?<\/b><\/p>\n

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A:<\/b> Yes. For severe environments (such as Southeast Asian monsoon climates or coastal infrastructure), we highly recommend specifying a heavier zinc coating (up to Z275 g\/m\u00b2). Additionally, BOMIS provides advanced Aluminum-Zinc (AZ) and Zinc-Aluminum-Magnesium (ZAM) coating options on the S550GD substrate, which offer 3 to 5 times the corrosion resistance of standard hot-dipped galvanized steel.<\/p>\n<\/blockquote>\n

Q3: Does your S550GD comply with international structural standards?<\/b><\/p>\n

\n

A:<\/b> Absolutely. Our S550GD is manufactured strictly in accordance with the European Union EN 10346<\/b> standard, which is widely recognized and accepted in global markets, including South America and the Middle East, for solar mounting, roofing, and structural frameworks. A comprehensive Mill Test Certificate (MTC) is provided with every shipment.<\/p>\n<\/blockquote>\n

Q4: What is the MOQ and typical lead time for custom S550GD orders?<\/b><\/p>\n

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A:<\/b> As a direct manufacturer, our Minimum Order Quantity (MOQ) is typically 18 Metric Tons (equivalent to one 20ft container). Our standard production lead time ranges from 7 to 35 days, depending on your specific thickness, width requirements, and the current mill production schedule.<\/p>\n<\/blockquote>","protected":false},"excerpt":{"rendered":"

Engineered to meet the rigorous European EN 10346 standard, S550GD galvanized steel delivers exceptional structural integrity and high yield strength.<\/p>\n

 <\/p>\n

At BOMIS, we manufacture and supply this premium coated steel with highly customizable dimensions to fit your specific engineering requirements\u2014offering precision thicknesses ranging from 0.13mm up to 6.0mm, and widths up to 1500mm.<\/p>","protected":false},"featured_media":5613,"template":"","meta":{"rank_math_title":"S550GD Galvanized Steel-Bomi Steel","rank_math_description":"S550GD+Z\/AZ\/ZM hot-dip galvanized steel coil & sheet. EN 10346 standard, 550MPa yield strength. Widely used in structural engineering, new energy and automotive lightweight applications.","rank_math_canonical_url":"","rank_math_focus_keyword":""},"product_brand":[],"product_cat":[33],"product_tag":[58,48],"class_list":["post-5608","product","type-product","status-publish","has-post-thumbnail","product_cat-galvanized-steel-coil","product_tag-dx51d","product_tag-en-10346","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/product\/5608","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":11,"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/product\/5608\/revisions"}],"predecessor-version":[{"id":6712,"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/product\/5608\/revisions\/6712"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/media\/5613"}],"wp:attachment":[{"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/media?parent=5608"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/product_brand?post=5608"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/product_cat?post=5608"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.bomissteel.com\/kk\/wp-json\/wp\/v2\/product_tag?post=5608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}