{"id":7515,"date":"2026-07-23T17:24:43","date_gmt":"2026-07-23T09:24:43","guid":{"rendered":"https:\/\/www.bomissteel.com\/product\/blue-corrugated-roofing-sheets\/"},"modified":"2026-07-30T12:47:10","modified_gmt":"2026-07-30T04:47:10","slug":"blue-corrugated-roofing-sheets","status":"publish","type":"product","link":"https:\/\/www.bomissteel.com\/sw\/product\/blue-corrugated-roofing-sheets\/","title":{"rendered":"Mabati ya Bluu ya Paa \u2013 Paneli za Chuma za Paa za PPGI"},"content":{"rendered":"

Mabati ya buluu ya corrugated ni paneli za chuma cha galvani zilizopakwa rangi awali, zilizopindwa kwa mchakato wa roll-forming zikiwa na muundo wa wimbi la sinusoidi na kumaliziwa kwa rangi ya buluu ya RAL. Zimetengenezwa kwa ajili ya maganda ya majengo ya kibiashara, viwandani, na kilimo, mabati haya yanachanganya ufanisi wa kimuundo wa profaili ya mikunjo na mfumo wa tabaka nyingi wa upako unaotoa ulinzi wa hali ya hewa wa muda mrefu na mwonekano safi na wa kitaalamu. Zikipatikana katika viwango mbalimbali vya msingi, kemikali za upako, na vivuli vya rangi ya bluu, hutumika kama suluhisho linaloweza kutumika kwa njia nyingi kwa ajili ya paa na kufunika majengo kwa miradi kuanzia maghala hadi vyumba vya kuhifadhi baridi na miundo iliyotengenezwa awali. Kama bidhaa ya chuma bapa, mbao za paa za mikunjo hutolewa kwenye ushuru wa 35% wa Colombia chini ya Amri 0264<\/a>, na hivyo kuwa chaguo lenye gharama nafuu kwa miradi ya ujenzi ya Amerika Kusini. Kwa matumizi yanayohitaji utendaji wa moto uliodhibitishwa, angalia mwongozo wetu kuhusu Roli za chuma za PPGI zenye kiwango cha ukinzani na moto<\/a> kwa utengenezaji wa paneli za sandwichi.<\/p>\n

Vipengele Muhimu na Faida<\/h2>\n

1. Utoaji wa maji kwa ufanisi:<\/strong> Profaili ya mikunjo ya sinusoidi huunda njia za mtiririko wa maji zinazoendelea zinazoelekeza maji ya mvua haraka kutoka kwenye uso wa paa. Jiometri hii ya profaili, ikichanganywa na maelezo sahihi ya mwingiliano, hutoa utoshelevu wa kuzuia maji kwa miundo ya paa yenye mteremko mdogo na yenye mteremko wa kawaida.<\/p>\n

2. Uwiano mkubwa wa nguvu kwa uzito:<\/strong> Muundo wa corrugation huongeza ugumu halisi wa karatasi ya chuma, hivyo kuruhusu nyenzo nyembamba zaidi kuvuka umbali mkubwa kati ya purlini bila kupinda. Hii inapunguza mzigo wa maiti wa muundo kwenye fremu ya jengo na kupunguza gharama za msingi ikilinganishwa na mifumo mizito ya paa.<\/p>\n

3. Mfumo wa Ulinzi dhidi ya Kutu:<\/strong> Substrati inafaidika na mfuniko wa zinki au zinki-alumini kwa kuzamishwa moto, ikifuatiwa na primer, rangi ya juu ya rangi, na mfuniko wa nyuma wa hiari. Mfumo huu wa tabaka nyingi hutenganisha kiini cha chuma kutoka kwa unyevu na uchafu wa anga, ukitoa maisha ya kawaida ya huduma ya miaka 10\u201320 kulingana na mazingira na uchaguzi wa mfuniko.<\/p>\n

4. Utendaji wa Joto na Sauti:<\/strong> Pengo la hewa lililotengenezwa na profaili yenye mikunjo husaidia uingizaji hewa wa pasivi chini ya bati linapowekwa kwenye purlini, na hivyo kupunguza mkusanyiko wa joto kwenye kifuniko cha jengo. Ikijumuishwa na tabaka za upunguzaji joto, mfumo hutoa upinzani mkubwa wa joto na kupunguza kelele za mvua.<\/p>\n

5. Unyumbufu wa Mtindo wa Bluu:<\/strong> Mabati ya paa ya bluu hutoa utambulisho wa kuonekana wa kipekee lakini wa kitaalamu. Paleti ya bluu ya RAL \u2014 kutoka bluu ya bahari ya kina (RAL 5002) hadi bluu angavu ya anga (RAL 5015) \u2014 inawawezesha wasanifu majengo na wabainishi wa miradi kuoanisha rangi ya paa na chapa ya kampuni, mapendeleo ya kikanda, au muktadha wa mazingira.<\/p>\n

6. Usakinishaji uliorahisishwa:<\/strong> Muundo wa wimbi unaojirudia, jiometri ya mwingiliano iliyosanifiwa, na paneli nyepesi huwezesha usakinishaji wa haraka kwa kutumia mifumo ya kawaida ya kufunga. Hii hupunguza ratiba za ujenzi na mahitaji ya wafanyakazi uwanjani ikilinganishwa na mkusanyiko mizito au tata zaidi ya paa.<\/p>\n

\"Mabati<\/p>\n

Vipimo vya Kiufundi<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Jina la Bidhaa<\/td>\nMabati ya Bluu ya Kupinda (Mabati ya Chuma yaliyopakwa Rangi Awali)<\/td>\n<\/tr>\n
Unene wa Unene<\/td>\n0.12 mm \u2013 2.0 mm (gauge iliyochaguliwa kulingana na upana, mzigo wa upepo, na mahitaji ya kanuni za ujenzi za eneo husika)<\/td>\n<\/tr>\n
Upana wa karatasi<\/td>\n600 mm \u2013 1,250 mm (ufuniko halisi); upana wa kulisha hadi 1,500 mm kulingana na wasifu<\/td>\n<\/tr>\n
Urefu wa Karatasi<\/td>\nImekatwa maalum kulingana na mahitaji ya mradi; urefu wa kawaida hadi mita 12 kwa usafirishaji kwenye kontena<\/td>\n<\/tr>\n
Nyenzo za msingi<\/td>\nChuma kilichopakwa zinki kwa kuzamishwa moto (GI), chuma kilichopakwa galvalume\/zinki-alumini (GL), mchanganyiko wa zinki, alumini na magnesiamu (ZAM), na alumini<\/td>\n<\/tr>\n
Daraja za Chuma<\/td>\nDX51D, DX52D, DX53D, Q235, Q345, SGCC, ASTM A653, A653M, na viwango sawa<\/td>\n<\/tr>\n
Viwango vinavyotumika<\/td>\nEN 10169, EN 10346, ASTM A755, ASTM A653, JIS G 3312, GB\/T 12754<\/td>\n<\/tr>\n
Uzito wa mipako ya Zinki<\/td>\nZ60 \u2013 Z275 (60 \u2013 275 g\/m\u00b2); msingi wa GL: AZ70 \u2013 AZ185<\/td>\n<\/tr>\n
Mifumo ya Mipako<\/td>\nPE (Poliesteri), SMP (Poliesteri iliyobadilishwa kwa silikoni), HDP (Poliesteri yenye uimara mkubwa), PVDF (Fluoridi ya polivinilidini)<\/td>\n<\/tr>\n
Unene wa Tabaka la Juu<\/td>\n10 \u2013 35 \u03bcm (primer + rangi ya juu); rangi ya nyuma: 5 \u2013 14 \u03bcm<\/td>\n<\/tr>\n
Chaguo za Rangi ya Bluu<\/td>\nRAL 5000 (bluu ya zambarau), RAL 5002 (ultramarine), RAL 5005 (bluu ya ishara), RAL 5007 (bluu angavu), RAL 5010 (bluu ya gentian), RAL 5012 (bluu nyepesi), RAL 5015 (bluu ya anga), RAL 5017 (bluu ya trafiki), RAL 5019 (bluu ya capri), RAL 5022 (bluu ya usiku), RAL 5023 (bluu ya mbali), RAL 5026 (bluu ya usiku ya lulu)<\/td>\n<\/tr>\n
Aina za wasifu<\/td>\nWimbi la kawaida la sinusoidi; wimbi maalum lenye kipenyo na urefu vinapatikana kwa ombi<\/td>\n<\/tr>\n
Idadi Ndogo Zaidi ya Oda<\/td>\nTani 10 za metriki kwa kila sifa na rangi<\/td>\n<\/tr>\n
Ufungashaji<\/td>\nUfungashaji wa kusafirisha baharini unaofaa kwa bidhaa za nje, unaojumuisha kizuizi cha unyevu cha VCI, kinga za kingo, na mikanda ya chuma kwenye paleti za mbao<\/td>\n<\/tr>\n
Masharti ya malipo<\/td>\nEXW, FOB, CIF, na CFR \u2014 zinazoweza kujadiliwa kulingana na wingi wa oda na eneo la kuwasilisha.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mwongozo wa Rejeleo ya Rangi za Bluu za RAL<\/h2>\n

Mabati yote ya bluu yamepakwa kulingana na viwango vya rangi vya RAL, kuhakikisha uthabiti wa mfululizo na usahihi wa rangi katika hatua zote za mradi. Vivuli vifuatavyo vya bluu hutolewa mara kwa mara:<\/p>\n\n\n\n\n\n\n\n\n\n\n
RAL 5000<\/td>\nBuluu ya zambarau<\/td>\nBluu iliyokolea, isiyoangaza, yenye vivuli vidogo vya zambarau \u2014 inafaa kwa matumizi ya viwandani na maghala<\/td>\n<\/tr>\n
RAL 5002<\/td>\nUltramarine<\/td>\nA rich, intense navy blue \u2014 a popular choice for corporate and institutional buildings<\/td>\n<\/tr>\n
RAL 5005<\/td>\nSignal Blue<\/td>\nA bright, saturated medium blue with high visibility \u2014 widely specified for logistics and commercial facilities<\/td>\n<\/tr>\n
RAL 5010<\/td>\nGentian Blue<\/td>\nA dark, elegant blue \u2014 recommended for architectural projects requiring a subdued, professional appearance<\/td>\n<\/tr>\n
RAL 5012<\/td>\nLight Blue<\/td>\nA soft, pastel-toned blue \u2014 suitable for coastal and Mediterranean architectural contexts<\/td>\n<\/tr>\n
RAL 5015<\/td>\nSky Blue<\/td>\nA vibrant, clean blue \u2014 frequently chosen for sports facilities, retail, and public buildings<\/td>\n<\/tr>\n
RAL 5017<\/td>\nTraffic Blue<\/td>\nA bold, deep blue \u2014 specified for transportation infrastructure and high-visibility structures<\/td>\n<\/tr>\n
RAL 5023<\/td>\nDistant Blue<\/td>\nA muted blue-grey \u2014 ideal for contemporary architectural designs and mixed-material fa\u00e7ades<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Custom RAL matching beyond these standard shades is available for orders meeting the MOQ threshold. Sample swatches can be provided for color approval prior to production.<\/p>\n

Maombi<\/h2>\n
    \n
  • Industrial Warehouses & Factories:<\/strong> Blue corrugated sheets are a cost-effective, fast-to-install roofing solution for large-span industrial buildings. The lightweight panels reduce steel frame tonnage while meeting durability expectations for unconditioned and semi-conditioned spaces.<\/li>\n
  • Commercial & Retail Facilities:<\/strong> The clean blue profile provides a finished, professional roofline for shopping complexes, showrooms, and commercial office structures without requiring additional ceiling systems.<\/li>\n
  • Agricultural Buildings:<\/strong> Barns, livestock shelters, equipment storage, and grain stores benefit from the corrosion resistance and low maintenance requirements of coated corrugated steel in farm environments exposed to moisture, ammonia, and dust.<\/li>\n
  • Cold Storage & Food Processing:<\/strong> When paired with insulated sandwich panel systems, blue corrugated sheets form the weather-resistant outer skin for temperature-controlled facilities, refrigerated warehouses, and food-grade processing plants.<\/li>\n
  • Prefabricated & Modular Structures:<\/strong> Container fabrication, portable cabins, site offices, and prefab housing modules routinely use corrugated roofing sheets for their combination of light weight, structural performance, and rapid assembly.<\/li>\n
  • Ujenzi wa Uzio na Kizuizi cha Mpaka:<\/strong> Blue corrugated sheets are frequently repurposed for industrial fencing, construction site hoardings, and security perimeter walls \u2014 providing both visual screening and weather durability.<\/li>\n
  • Wall Cladding & Fa\u00e7ade Systems:<\/strong> Beyond roofing, the sheets are specified as vertical wall cladding for factories and warehouses where a durable, uniform exterior finish is required and corrugation provides shadow-line visual interest.<\/li>\n<\/ul>\n

    Choosing the Right Coating System<\/h2>\n

    The coating chemistry determines the long-term performance of blue corrugated roofing sheets. Selecting the appropriate system for the project environment is recommended:<\/p>\n\n\n\n\n\n\n
    PE (Polyester)<\/strong><\/td>\nStandard interior and moderate exterior applications. Good color retention and flexibility at an economical price point. Recommended for interior wall panels and sheltered exterior applications.<\/td>\n<\/tr>\n
    SMP (Silicone-Modified Polyester)<\/strong><\/td>\nEnhanced UV resistance and chalk resistance compared to standard PE. Suggested for exterior roofing and cladding in temperate climates with moderate sun exposure.<\/td>\n<\/tr>\n
    HDP (High-Durability Polyester)<\/strong><\/td>\nImproved scratch resistance and weathering performance. Suitable for high-UV environments and applications where the sheet surface may experience contact during handling and installation.<\/td>\n<\/tr>\n
    PVDF (Polyvinylidene Fluoride)<\/strong><\/td>\nPremium fluoropolymer coating with the best UV stability and chalk resistance. Recommended for architectural projects in tropical, coastal, or high-UV regions where long-term color retention is a project requirement.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Price Reference & Cost Factors<\/h2>\n

    Pricing for blue corrugated roofing sheets typically ranges from approximately $550 to $1,500 per metric ton, depending on the following variables:<\/p>\n

      \n
    • Substrate Material:<\/strong> Galvanized steel (GI) is generally the most cost-effective base; galvalume (GL) and ZAM alloys command moderate premiums for their enhanced corrosion resistance; aluminum substrate is priced higher.<\/li>\n
    • Coating System:<\/strong> PE is the most economical; PVDF sits at the top of the range. SMP and HDP fall between these two.<\/li>\n
    • Steel Gauge & Zinc Weight:<\/strong> Thicker gauges and higher zinc coating weights increase material cost proportionally.<\/li>\n
    • Order Volume:<\/strong> Full container loads and project-scale quantities typically benefit from volume pricing. The standard MOQ is 10 tons; smaller trial quantities may carry a surcharge.<\/li>\n
    • Market Conditions:<\/strong> Prices fluctuate with global steel coil indices, zinc commodity pricing, and shipping freight rates. Contact our sales team for a current quote against your specific specification.<\/li>\n<\/ul>\n

      Processing & Installation Guidance<\/h2>\n

      For optimal on-site results, the following best practices are suggested:<\/p>\n

      Cutting & Trimming:<\/strong> Sheets can be cut on-site using nibblers, electric shears, or circular saws with carbide-tipped blades. Hot-cutting methods (abrasive discs, oxy-acetylene) are not recommended as they damage the coating at the cut edge and can void coating warranty coverage. Cut edges should be oriented away from prevailing weather and, for critical exposure locations, treated with a zinc-rich touch-up paint.<\/p>\n

      Ufungaji:<\/strong> Use corrosion-resistant fasteners (stainless steel or coated carbon steel with EPDM sealing washers) matched to the support structure material to avoid galvanic incompatibility. Fasteners are best placed through the crown (peak) of the corrugation, not the valley, to prevent water pooling around the penetration. Recommended fastener spacing is per the project’s wind uplift calculation; typical patterns are every second or third corrugation at end laps and supports.<\/p>\n

      Kupiga lapi:<\/strong> End laps of 150\u2013200 mm are typical for roof pitches above 10\u00b0; increase end lap to 250\u2013300 mm for pitches below 10\u00b0 or for sites with high wind exposure. Side laps of at least one full corrugation are standard. Apply a bead of neutral-cure sealant within the lap for enhanced weather-tightness in exposed or low-slope conditions.<\/p>\n

      Handling & Storage:<\/strong> Store sheets on level supports with a slight slope for drainage, protected from standing water and direct ground contact. Keep the protective film (if applied) intact until immediately before installation. When moving individual sheets, carry them on edge rather than flat to avoid flex damage and surface scuffing.<\/p>\n

      Quality Assurance & Testing<\/h2>\n

      Each production batch is verified through the following quality control stages:<\/p>\n

        \n
      • Incoming Substrate Inspection:<\/strong> Verification of zinc coating weight (ASTM A90\/A90M or equivalent), base metal mechanical properties (yield strength, tensile strength, elongation), and dimensional tolerances against order specifications.<\/li>\n
      • Coating Process Control:<\/strong> In-line monitoring of coating thickness (wet film and dry film), oven temperature profiling to confirm full cure, and color measurement against the specified RAL reference using spectrophotometry.<\/li>\n
      • Finished Product Testing:<\/strong> T-bend adhesion testing, reverse impact resistance, pencil hardness (per ASTM D3363), MEK double-rub solvent resistance to verify full crosslinking, salt spray resistance (ASTM B117 \u2014 500\u20131,000 hours depending on coating system), and QUV accelerated weathering for color stability and gloss retention verification.<\/li>\n
      • Third-Party Certification:<\/strong> Independent testing through SGS, BV, or equivalent inspection agencies is supported and can be coordinated prior to shipment. Mill test certificates per EN 10204 are supplied with each order.<\/li>\n<\/ul>\n

        Maswali Yanayoulizwa Mara kwa Mara<\/h2>\n

        Q: What is the minimum order quantity for blue corrugated roofing sheets?<\/h3>\n

        The standard MOQ is 10 metric tons per specification and color. For initial project samples, qualification, or smaller trial orders, reduced quantities may be accommodated on a case-by-case basis \u2014 please contact our sales team with your requirements.<\/p>\n

        Q: How do I select the right blue RAL color for my project?<\/h3>\n

        We recommend reviewing the RAL color reference chart above and requesting physical swatches for on-site evaluation under natural lighting conditions. Color perception varies significantly with lighting, surrounding materials, and viewing angle. Our team can ship A5-sized coated sample swatches for client approval before production runs commence.<\/p>\n

        Q: What coating system should I specify for a coastal or marine environment?<\/h3>\n

        For projects within 5 km of saltwater coastlines or in industrial zones with airborne contaminants, PVDF or HDP coating systems on a Z275 or AZ150 substrate are typically suggested. The combination of high zinc coating weight and a premium fluoropolymer or high-durability topcoat provides the best protection against chloride-induced corrosion.<\/p>\n

        Q: Can blue corrugated sheets be used on low-slope roofs?<\/h3>\n

        Corrugated sheets can be applied on roof slopes as low as 5\u00b0 (approximately 1:12), provided that end laps are increased to 250\u2013300 mm, side laps are sealed with neutral-cure sealant, and fastener density is adjusted to the project wind uplift calculation. For slopes below 5\u00b0, a standing seam or concealed-fix profile is generally recommended over corrugated through-fastened systems.<\/p>\n

        Q: What is the typical lead time for an order?<\/h3>\n

        Standard production lead time is approximately 15\u201325 working days from deposit confirmation and color approval, depending on the order volume, specification complexity, and current production schedule. Shipping transit time is additional and depends on the destination port. Expedited production may be arranged for time-sensitive projects.<\/p>\n

        Q: Are the sheets compatible with insulation and sandwich panel construction?<\/h3>\n

        Yes. Blue corrugated sheets are routinely used as the outer weather skin in insulated sandwich panel assemblies with PIR, PUR, mineral wool, or EPS cores. They can also be installed over purlins with separate insulation layers (blanket or rigid board) in built-up roof systems.<\/p>\n

        Q: What documentation is provided with each shipment?<\/h3>\n

        Standard documentation includes: commercial invoice, packing list, bill of lading, mill test certificate (MTC per EN 10204), certificate of origin (COO), and fumigation certificate for wooden pallets where required. Additional documentation \u2014 such as third-party inspection reports, CE marking declarations, or specific regulatory compliance certificates \u2014 can be coordinated on request.<\/p>","protected":false},"excerpt":{"rendered":"

        Mabati ya paa ya bluu yaliyopinda ni paneli za chuma cha galvani zilizopakwa rangi awali, zilizopindwa kwa mchakato wa kusokota zikiwa na muundo wa wimbi la sinusoidi na kumaliziwa kwa tabaka la rangi ya bluu ya RAL. Zinapatikana katika viwango mbalimbali vya msingi, mifumo ya tabaka za rangi, na vivuli vya bluu kwa ajili ya paa za majengo ya viwandani, biashara, na kilimo.<\/p>\n

        Vipimo Muhimu:<\/strong><\/p>\n

          \n
        • Unene: 0.12 mm \u2013 2.0 mm<\/li>\n
        • Upana: 600 mm \u2013 1,250 mm (ufuniko halisi)<\/li>\n
        • Substrate: GI, GL, ZAM, Alumini<\/li>\n
        • Ufuniko: PE, SMP, HDP, PVDF<\/li>\n
        • Rangi za Bluu: RAL 5000 \u2013 RAL 5026 (kivuli 12 za kawaida)<\/li>\n<\/ul>\n

          Bora kwa:<\/strong> Maghala ya viwandani, miundombinu ya kibiashara, majengo ya kilimo, hifadhi baridi, miundo iliyotengenezwa awali, na matumizi ya kufunika kuta.<\/p>","protected":false},"featured_media":7519,"template":"","meta":{"rank_math_title":"Blue Corrugated Roofing Sheets - PPGI Metal Roofing Panels","rank_math_description":"Premium blue corrugated roofing sheets in PPGI steel. 0.12-2.0mm thickness, 12 RAL blue shades, PE\/SMP\/HDP\/PVDF coatings. Wholesale supplier - MOQ 10 tons. Custom lengths available.","rank_math_canonical_url":"","rank_math_focus_keyword":"blue corrugated roofing sheets"},"product_brand":[],"product_cat":[36],"product_tag":[47,66,58,63,48],"class_list":["post-7515","product","type-product","status-publish","has-post-thumbnail","product_cat-ppgi-roof-sheet","product_tag-astm-a653","product_tag-astm-a755","product_tag-dx51d","product_tag-en-10169","product_tag-en-10346","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/product\/7515","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":3,"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/product\/7515\/revisions"}],"predecessor-version":[{"id":7599,"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/product\/7515\/revisions\/7599"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/media\/7519"}],"wp:attachment":[{"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/media?parent=7515"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/product_brand?post=7515"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/product_cat?post=7515"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.bomissteel.com\/sw\/wp-json\/wp\/v2\/product_tag?post=7515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}