{"product_id":"k-flex-k-rock-alu-50mm","title":"K-Flex K-Rock ALU Mineral Wool Pipe Insulation 50mm Wall","description":"\u003ch2\u003eK-Flex K-Rock ALU Mineral Wool Pipe Insulation — 50mm Wall\u003c\/h2\u003e\u003cp\u003eK-FLEX K-Rock ALU is a pre-formed mineral wool (rock wool) pipe section with an aluminium foil facing, manufactured to the highest European standards. Engineered for high-temperature HVAC, industrial, and building services pipework where elastomeric insulation is unsuitable, K-Rock ALU delivers outstanding thermal performance, fire resistance, and mechanical durability in demanding environments.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003e50mm wall thickness\u003c\/strong\u003e is the heaviest standard specification in the K-Rock ALU range, designed for the most demanding high-temperature industrial applications — steam mains, district heating distribution, and large-bore process pipework where maximum thermal resistance is critical. Available in bore sizes from 18mm to 273mm.\u003c\/p\u003e\u003cp\u003eThe factory-applied aluminium foil laminate provides a clean, professional finish and acts as a vapour barrier, making K-Rock ALU the preferred specification for plant rooms, district heating, steam lines, and high-temperature process pipework. Seal all joints and longitudinal seams with aluminium foil tape for a complete vapour-tight installation.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRock mineral wool construction — excellent high-temperature performance\u003c\/li\u003e\n\u003cli\u003eAluminium foil (ALU) facing — vapour barrier, professional finish, and UV resistance\u003c\/li\u003e\n\u003cli\u003eOutstanding fire resistance — Euroclass A1 non-combustible\u003c\/li\u003e\n\u003cli\u003eExcellent acoustic and thermal insulation properties\u003c\/li\u003e\n\u003cli\u003eRigid pre-formed sections for fast, accurate installation\u003c\/li\u003e\n\u003cli\u003e50mm wall — 18mm to 273mm bore sizes available\u003c\/li\u003e\n\u003cli\u003eSupplied per 1 metre section\u003c\/li\u003e\n\u003cli\u003eCE certified — compliant with EN 14303\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh-temperature steam mains and district heating distribution\u003c\/li\u003e\n\u003cli\u003eLarge-bore industrial process pipework\u003c\/li\u003e\n\u003cli\u003ePlant rooms requiring maximum thermal and fire performance\u003c\/li\u003e\n\u003cli\u003eIndustrial installations requiring fire-rated insulation\u003c\/li\u003e\n\u003cli\u003eBuilding services where non-combustible insulation is specified\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRock mineral wool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFacing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminium foil laminate (ALU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWall thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore sizes available\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18mm to 273mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-200°C to +650°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal conductivity (λ)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.033 W\/(m·K) at 10°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReaction to fire\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEuroclass A1 — non-combustible (EN 13501-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater vapour diffusion resistance (μ)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥ 7,000 (ALU facing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEN 14303\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSection length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 metre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColour\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSilver (ALU faced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eK-FLEX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eOther wall thicknesses:\u003c\/strong\u003e \u003ca href=\"\/products\/k-flex-k-rock-alu-20mm\"\u003e20mm\u003c\/a\u003e | \u003ca href=\"\/products\/k-flex-k-rock-alu-25mm\"\u003e25mm\u003c\/a\u003e | \u003ca href=\"\/products\/k-flex-k-rock-alu-30mm\"\u003e30mm\u003c\/a\u003e | \u003ca href=\"\/products\/k-flex-k-rock-alu-40mm\"\u003e40mm\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e⚠️ Additional wall thicknesses available on request:\u003c\/strong\u003e 60mm, 70mm, 80mm, 90mm, 100mm and 120mm. Please contact us at \u003ca href=\"mailto:sales@ryanairconspares.com\"\u003esales@ryanairconspares.com\u003c\/a\u003e for pricing and availability.\u003c\/p\u003e","brand":"K-Flex","offers":[{"title":"18mm","offer_id":57273680757113,"sku":"50018LR1080BARP","price":13.23,"currency_code":"GBP","in_stock":true},{"title":"22mm","offer_id":57273680789881,"sku":"50022LR1080BARP","price":14.18,"currency_code":"GBP","in_stock":true},{"title":"28mm","offer_id":57273680822649,"sku":"50028LR1080BARP","price":14.89,"currency_code":"GBP","in_stock":true},{"title":"34mm","offer_id":57273680855417,"sku":"50034LR1080BARP","price":16.36,"currency_code":"GBP","in_stock":true},{"title":"42mm","offer_id":57273680888185,"sku":"50042LR1080BARP","price":18.04,"currency_code":"GBP","in_stock":true},{"title":"48mm","offer_id":57273680920953,"sku":"50048LR1080BARP","price":18.91,"currency_code":"GBP","in_stock":true},{"title":"54mm","offer_id":57273680953721,"sku":"50054LR1080BARP","price":21.01,"currency_code":"GBP","in_stock":true},{"title":"60mm","offer_id":57273680986489,"sku":"50060LR1080BARP","price":21.95,"currency_code":"GBP","in_stock":true},{"title":"64mm","offer_id":57273681019257,"sku":"50064LR1080BARP","price":22.58,"currency_code":"GBP","in_stock":true},{"title":"70mm","offer_id":57273681052025,"sku":"50070LR1080BARP","price":25.39,"currency_code":"GBP","in_stock":true},{"title":"76mm","offer_id":57273681084793,"sku":"50076LR1080BARP","price":25.89,"currency_code":"GBP","in_stock":true},{"title":"89mm","offer_id":57273681117561,"sku":"50089LR1080BARP","price":28.18,"currency_code":"GBP","in_stock":true},{"title":"102mm","offer_id":57273681150329,"sku":"50102LR1080BARP","price":33.58,"currency_code":"GBP","in_stock":true},{"title":"108mm","offer_id":57273681183097,"sku":"50108LR1080BARP","price":40.67,"currency_code":"GBP","in_stock":true},{"title":"114mm","offer_id":57273681215865,"sku":"50114LR1080BARP","price":41.88,"currency_code":"GBP","in_stock":true},{"title":"133mm","offer_id":57273681248633,"sku":"50133LR1080BARP","price":45.95,"currency_code":"GBP","in_stock":true},{"title":"140mm","offer_id":57273681281401,"sku":"50140LR1080BARP","price":65.23,"currency_code":"GBP","in_stock":true},{"title":"159mm","offer_id":57273681314169,"sku":"50159LR1080BARP","price":69.74,"currency_code":"GBP","in_stock":true},{"title":"168mm","offer_id":57273681346937,"sku":"50168LR1080BARP","price":72.03,"currency_code":"GBP","in_stock":true},{"title":"219mm","offer_id":57273681379705,"sku":"50219LR1080BARP","price":89.3,"currency_code":"GBP","in_stock":true},{"title":"273mm","offer_id":57273681412473,"sku":"50273LR1080BARP","price":108.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/K-FLEX-K-Rock-ALU-Mineral-Wool-Pipe-Insulation-Ryan-Air-Conditioning-Spares-68791865377143_b3b67377-e713-4c83-b3b3-6e601b88e415.png?v=1778762499","url":"https:\/\/www.airconspares.com\/products\/k-flex-k-rock-alu-50mm","provider":"Airconspares.com","version":"1.0","type":"link"}