{
  "version": "2026-08-29.1",
  "checked_date": "2026-08-29",
  "scope": "Selected dimensional compatibility rows for UK metric copper outside diameters and an official Armacell France 2026 product matrix. This is not a UK stock list or an application-thickness recommendation.",
  "sources": {
    "copper": {
      "title": "Wednesbury Tube: UK and Asia BS EN 1057 size ranges",
      "url": "https://www.wednesburytube.com/Size-ranges.html",
      "geography": "United Kingdom",
      "use": "15, 22 and 28 mm metric copper tube sizes and wall values"
    },
    "armacell_matrix": {
      "title": "Armacell France 2026 catalogue, AF/ArmaFlex Evo standard tube matrix",
      "url": "https://www.armacell.com/sites/default/files/2026/01/28/Catalogue_Pricebook_fr-FR_web.pdf",
      "geography": "France",
      "use": "Manufacturer product codes and carton linear metres for selected pipe outside diameters and insulation walls; not evidence of UK availability"
    },
    "armacell_uk_manual": {
      "title": "ArmaFlex application manual, UK edition",
      "url": "https://www.armacell.com/en-GB/armaflex-application-manual",
      "geography": "United Kingdom",
      "use": "Installation context and confirmation that AF/ArmaFlex tubes are used around pipe outside diameters"
    },
    "armacell_uk_product": {
      "title": "AF/ArmaFlex UK product brochure 072026",
      "url": "https://www.armacell.com/en-GB/af-armaflex-product-brochure",
      "geography": "United Kingdom",
      "use": "Current UK product-family description and application boundary; it is not the source of the tube matrix"
    }
  },
  "copper": [
    {"outside_diameter_mm": 15, "wall_mm": 0.7, "temper": "R250"},
    {"outside_diameter_mm": 22, "wall_mm": 0.9, "temper": "R250"},
    {"outside_diameter_mm": 28, "wall_mm": 0.9, "temper": "R250"}
  ],
  "products": [
    {"pipe_od_mm": 15, "insulation_wall_mm": 9, "product_code": "AF-CO-09X015", "carton_linear_m": 200},
    {"pipe_od_mm": 15, "insulation_wall_mm": 13, "product_code": "AF-CO-13X015", "carton_linear_m": 122},
    {"pipe_od_mm": 15, "insulation_wall_mm": 19, "product_code": "AF-CO-19X015", "carton_linear_m": 72},
    {"pipe_od_mm": 15, "insulation_wall_mm": 25, "product_code": "AF-CO-25X015", "carton_linear_m": 48},
    {"pipe_od_mm": 22, "insulation_wall_mm": 9, "product_code": "AF-CO-09X022", "carton_linear_m": 140},
    {"pipe_od_mm": 22, "insulation_wall_mm": 13, "product_code": "AF-CO-13X022", "carton_linear_m": 100},
    {"pipe_od_mm": 22, "insulation_wall_mm": 19, "product_code": "AF-CO-19X022", "carton_linear_m": 56},
    {"pipe_od_mm": 22, "insulation_wall_mm": 25, "product_code": "AF-CO-25X022", "carton_linear_m": 40},
    {"pipe_od_mm": 28, "insulation_wall_mm": 9, "product_code": "AF-CO-09X028", "carton_linear_m": 98},
    {"pipe_od_mm": 28, "insulation_wall_mm": 13, "product_code": "AF-CO-13X028", "carton_linear_m": 82},
    {"pipe_od_mm": 28, "insulation_wall_mm": 19, "product_code": "AF-CO-19X028", "carton_linear_m": 48},
    {"pipe_od_mm": 28, "insulation_wall_mm": 25, "product_code": "AF-CO-25X028", "carton_linear_m": 36}
  ]
}