{"id":6082,"date":"2026-08-21T13:44:30","date_gmt":"2026-08-21T12:44:30","guid":{"rendered":"https://vikingjohnson.com/it-it/technical-design/pipe-materials/"},"modified":"2026-09-02T12:22:41","modified_gmt":"2026-09-02T11:22:41","slug":"pipe-materials","status":"publish","type":"technical_design","link":"https://www.vikingjohnson.com/it-it/technical-design/pipe-materials/","title":{"rendered":"Pipe Materials"},"content":{"rendered":"\t\t<div class=\"block-pipe-materials relative custom-block overflow-hidden alignwide mb-md py-sm \" id=\"block_39d1cd14a5b4f65fb20ed910dca56cfa\">\n\t\t\t\t<div class=\"block-container\">\n\t\t\t\n\t\t\t\t\t\t\t<div class=\"mb-sm max-w-[680px]\">\n\t\t\t\t\t<p>Most rigid and semi-rigid pipe materials can be joined with Viking Johnson coupling products, including:</p>\n\t\t\t\t</div>\n\t\t\t\n\t\t\t\t\t\t\t<div class=\"pipe-materials-list grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 lg:grid-cols-4 gap-x-md gap-y-xs\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"Asbestos Cement\" title=\"Asbestos Cement\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-asbestos-cement.png\" alt=\"Asbestos Cement pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">Asbestos Cement</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"Cast Iron\" title=\"Cast Iron\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-cast-iron.png\" alt=\"Cast Iron pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">Cast Iron</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"Concrete\" title=\"Concrete\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-concrete.png\" alt=\"Concrete pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">Concrete</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"Ductile Iron\" title=\"Ductile Iron\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-ductile-iron.png\" alt=\"Ductile Iron pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">Ductile Iron</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"GRP\" title=\"GRP\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-grp.png\" alt=\"GRP pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">GRP</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"PE\" title=\"PE\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-pe.png\" alt=\"PE pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">PE</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"PE Barrier Pipe\" title=\"PE Barrier Pipe\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-pe-barrier-pipe.png\" alt=\"PE Barrier Pipe pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">PE Barrier Pipe</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"PVC\" title=\"PVC\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-pvc.png\" alt=\"PVC pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">PVC</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"Stainless Steel\" title=\"Stainless Steel\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-stainless-steel.png\" alt=\"Stainless Steel pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">Stainless Steel</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"flex items-center gap-xxs p-xxs border border-vj-grey-light-600 bg-vj-grey-light-500 rounded-lg\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" data-tooltip=\"Steel\" title=\"Steel\" width=\"52\" height=\"56\" src=\"https://www.vikingjohnson.com/wp-content/uploads/2026/03/pipematerial-steel.png\" alt=\"Steel pipe material icon\" />\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"text-sm text-vj-grey-dark-500\">Steel</p>\n\t\t\t\t\t\t</div>\n\t\t\t\t\t\t\t\t\t</div>\n\t\t\t\n\t\t\t\n\t\t\t\t\t</div>\n\t</div>\n\n\n\n<p class=\"alignwide mb-sm wp-block-paragraph\">Of these, the rigid materials with high strength capabilities, such as steel, grey cast iron, ductile iron and concrete can be joined using standard Viking Johnson couplings without revision to our normal fitting instructions.</p>\n\n\n\n<p class=\"alignwide mb-sm wp-block-paragraph\">Certain lower strength materials, such as the lower classes of asbestos cement pipe, may need reduced bolt torques to avoid pipe damage.&nbsp; Glass reinforced plastic (GRP) pipe is relatively flexible and its structure may be damaged by high gasket pressures.&nbsp; Reduced bolt torques are also recommended for this pipe material (details available on request).</p>\n\n\n\n<p class=\"alignwide mb-sm wp-block-paragraph\">Polyethylene (PE) pipe is produced in various types and with various performance capabilities.&nbsp; All exhibit the tendency to creep i.e. change shape when loaded and the use of standard Viking Johnson couplings may result in leakage or pipe pull-out.&nbsp; Viking Johnson UltraGrip, AquaGrip, AquaFast and AquaShield products are both specifically designed to join PE pipe either to another PE pipe or to flanged equipment or other pipe materials.</p>\n","protected":false},"excerpt":{"rendered":"<p>Of these, the rigid materials with high strength capabilities, such as steel, grey cast iron, ductile iron and concrete 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