{"id":1376,"date":"2025-12-23T07:40:31","date_gmt":"2025-12-23T07:40:31","guid":{"rendered":"https:\/\/bomissteel.com\/?post_type=product&p=1376"},"modified":"2026-05-12T05:20:04","modified_gmt":"2026-05-12T05:20:04","slug":"astm-ppgl-color-coated-roofing-sheet","status":"publish","type":"product","link":"https:\/\/www.bomissteel.com\/ln\/product\/astm-ppgl-color-coated-roofing-sheet\/","title":{"rendered":"ASTM PPGL Tole ya nsamba"},"content":{"rendered":"

ASTM Standard PPGL Roofing Sheet: High-Performance Al-Zn Alloy Protection<\/h2>\n

Our ASTM Standard PPGL (Prepainted Galvalume) Roofing Sheets are engineered for premium architectural projects that demand long-term structural integrity and superior thermal efficiency. Combining the sacrificial protection of zinc with the barrier protection of aluminum 1mm Aluminium Sheet, these color-coated panels are compliant with ASTM A792 (for the substrate) and ASTM A755 (for the coating system), making them the gold standard for roofing in coastal, industrial, and high-heat environments. 2B Finish Stainless Steel<\/p>\n

The Galvalume Advantage: 55% Al-Zn Alloy Substrate
\nThe core of our PPGL roofing sheet is a 55% Aluminum, 43.4% Zinc, and 1.6% Silicon alloy coating. This specific composition, governed by ASTM A792, offers:<\/p>\n

Twice the Longevity: Galvalume substrates typically last 2 to 4 times longer than traditional galvanized steel (PPGI) in the same environment.<\/p>\n

Superior Heat Reflection: The aluminum content provides high thermal reflectivity, keeping buildings cooler and significantly reducing energy costs for air conditioning.<\/p>\n

Self-Healing Properties: The zinc component provides essential cathodic protection at cut edges and scratches, preventing the spread of rust.<\/p>\n

Key Benefits for Architectural Applications<\/h2>\n

Lightweight & High Strength: The ASTM compliant steel core allows for thinner gauges without compromising snow or wind load capacities, reducing the overall weight of the roof structure.<\/p>\n

Aesthetic Versatility: Available in a wide spectrum of RAL colors and diverse profiles (Circular, Trapezoidal, or IBR), providing architects with unlimited design flexibility.<\/p>\n

Environmental Sustainability: Our PPGL sheets are 100% recyclable and feature “Cool Roof” pigments that mitigate the Urban Heat Island effect.<\/p>\n

Technical Specifications Summary (ASTM Compliance)<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Eloko ya ntina<\/strong><\/td>\nASTM Standard Requirement<\/strong><\/td>\nBomis Mosala ya Ebende<\/strong><\/td>\n<\/tr>\n<\/thead>\n
Niveau ya nse<\/b><\/span><\/td>\nASTM A792 (CS \/ SS Grade 33-80)<\/span><\/td>\nPrime Quality Full Hard \/ Soft<\/span><\/td>\n<\/tr>\n
Al-Zn Coating<\/b><\/span><\/td>\nAZ50, AZ100, AZ150<\/span><\/td>\nPrecise Alloy Control<\/span><\/td>\n<\/tr>\n
Paint Coating<\/b><\/span><\/td>\nASTM A755 (PVDF \/ SMP \/ PE)<\/span><\/td>\nHigh UV & Chalk Resistance<\/span><\/td>\n<\/tr>\n
Mekano ya T-Bend<\/b><\/span><\/td>\nMoko na likolo ya moko<\/span> 2T (No Cracking)<\/span><\/td>\nGuaranteed Adhesion<\/span><\/td>\n<\/tr>\n
Makasi ya crayon<\/b><\/span><\/td>\nMoko na likolo ya minei koleka moko na likolo ya minei<\/span> H<\/span><\/td>\nKowumela na likolo koleka<\/span><\/td>\n<\/tr>\n
Kokanga molunge<\/b><\/span><\/td>\nKino na 315\u00b0C<\/span><\/td>\nNo Discoloration<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Liboke na biso<\/h2>\n
\"Usine
Usine ya ba bobines\/t\u00f4les ya acier galvanis\u00e9 oyo bapakoli langi liboso<\/figcaption><\/figure>\n
\"Usine
Usine ya ba bobines\/t\u00f4les ya acier galvanis\u00e9 oyo bapakoli langi liboso<\/figcaption><\/figure>\n
<\/div>\n

Etaleli ya biloko<\/h2>\n
\"Bobine
Bobine ya PPGL \u2013 ASTM A755 (Tole ya nsamba)<\/figcaption><\/figure>\n
\"Bobine
Bobine ya PPGL \u2013 ASTM A755 (Tole ya nsamba)<\/figcaption><\/figure>\n
<\/div>\n

Mituna oyo etunamaka mingi<\/h2>\n

1. What is the main difference between PPGI and PPGL roofing sheets?<\/strong>
\nThe primary difference lies in the substrate coating. PPGI (Prepainted Galvanized) uses a 100% zinc coating, while PPGL (Prepainted Galvalume) uses a 55% Aluminum-Zinc alloy coating. According to ASTM A792 standards, the aluminum in PPGL provides superior barrier protection and heat reflectivity, making PPGL last 2 to 4 times longer than PPGI in highly corrosive or coastal environments.<\/p>\n

2. How does the ASTM A792 standard ensure the quality of PPGL?<\/strong>
\nASTM A792\/A792M is the standard specification for 55% Al-Zn alloy-coated steel. It governs the chemical composition of the coating, the mechanical properties of the steel base, and the coating weight (such as AZ50 or AZ150). Compliance with this standard ensures that the roofing sheets you purchase have the structural strength and corrosion resistance required for long-term architectural use.<\/p>\n

3. Why are ASTM PPGL panels considered “Cool Roofing” materials?<\/strong>
\nASTM standard PPGL panels have exceptional thermal reflectivity. The aluminum in the Al-Zn coating reflects a significant amount of solar radiation away from the building. This reduces the heat absorbed by the roof, keeping indoor temperatures lower and potentially cutting air conditioning energy costs by 20-30%, especially in tropical or high-heat regions.<\/p>\n

4. Can ASTM PPGL roofing sheets be used in coastal areas?<\/strong>
\nYes, but with specific requirements. For coastal regions with high salt spray, we recommend ASTM A755 compliant PVDF coatings on an AZ150 (150g\/m\u00b2) Galvalume substrate. The combination of the Al-Zn alloy’s edge protection and the UV-resistant PVDF paint ensures that the panels resist salt-induced corrosion and color fading much better than standard coatings.<\/p>\n

5. What is the typical lifespan of an ASTM Standard PPGL roof?<\/strong>
\nWhen installed correctly and using the appropriate specifications (like AZ150 with HDP or PVDF paint), an ASTM Standard PPGL roof can last 25 years depending on the environmental conditions. Its superior resistance to rust and chalking makes it one of the most durable and low-maintenance metal roofing options available today.<\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Esika ya ebandeli<\/strong>Shandong, Chine<\/p>\n

Ntango ya bokabeli<\/strong>: mikolo ntuku mibale<\/p>\n

Makoki ya kopesa<\/strong>: Toni nk\u00f3to mitano na sanza<\/p>\n

l\u00e1ngi<\/strong>Tokoki kobongisa langi kolanda \u00e9chantillon na yo mpe tablo ya balangi ya RAL.<\/p>\n

Motango ya nse oyo esengeli koteka<\/strong>: Tonne 18<\/p>\n

Motango ekeseni ya biloko ya kosomba na ebandeli ememaka ntalo ekeseni ya biloko.<\/p>\n

Soki ozali na mposa na yango, tobondeli yo, benga service na biso ya bakiliya noki lokola ekoki kosalema.<\/p>","protected":false},"featured_media":4035,"template":"","meta":{"rank_math_title":"ASTM PPGL Roofing Sheet | Color Coated Steel | Bomis","rank_math_description":"High-durability ASTM PPGL roofing sheets from Bomis Steel. Premium color-coated Galvalume panels with superior corrosion resistance and heat reflectivity. Ideal for industrial and residential use. ","rank_math_canonical_url":"","rank_math_focus_keyword":""},"product_brand":[],"product_cat":[36],"product_tag":[],"class_list":["post-1376","product","type-product","status-publish","has-post-thumbnail","product_cat-ppgi-roof-sheet","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/product\/1376","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":12,"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/product\/1376\/revisions"}],"predecessor-version":[{"id":6613,"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/product\/1376\/revisions\/6613"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/media\/4035"}],"wp:attachment":[{"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/media?parent=1376"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/product_brand?post=1376"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/product_cat?post=1376"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.bomissteel.com\/ln\/wp-json\/wp\/v2\/product_tag?post=1376"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}