{"id":5293,"date":"2026-08-09T16:02:41","date_gmt":"2026-08-09T15:02:41","guid":{"rendered":"https://vikingjohnson.com/de-de/?page_id=5293"},"modified":"2026-10-15T09:07:56","modified_gmt":"2026-10-15T08:07:56","slug":"quality-manufacturing","status":"publish","type":"page","link":"https://www.vikingjohnson.com/de-de/about/quality-manufacturing/","title":{"rendered":"Quality & Manufacturing"},"content":{"rendered":"\n
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Quality Built Into Every Product

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For more than 90 years, Viking Johnson has been designing and manufacturing high performance pipe fittings and flow control products that help customers build reliable, long-lasting pipeline networks.

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From couplings and flange adaptors to specialist large-diameter solutions, every product is engineered with a focus on durability, performance and a 50-year design life. Industry standards form the foundation of our approach, but our commitment to quality goes further through rigorous in-house testing, advanced manufacturing processes and continuous investment in our facilities.

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Accelerated Ageing and Testing Programmes

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Products undergo accelerated ageing and testing programmes within our in-house facilities to validate long-term performance and provide customers with confidence in demanding applications and environments.

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Supported by ISO 9001, ISO 14001 and ISO 45001 certifications, alongside a wide range of third-party approvals for potable water, marine and regional applications, our quality systems ensure consistent performance and reliability across every product range.

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Example third-party approvals:

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Marine

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Bureau Veritas and ABS

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Potable Water

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Water Contact Materials (Rilsan coating & gaskets) certified to:
\nUK – WRAS
\nNetherlands – KIWA
\nFrench – ACS
\nBelgium – Belgaqua
\nGermany – UBA

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Product Performance

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UltraGrip DN50-DN300 – BSI Verification complies with EN14525
\nUltraGrip DN50-DN600 – KIWA Netherlands certification complies with BRL K775 & EN14525
\nUltraGrip Amplified DN700-DN800 – WRc certification complies with BS8561, EN14525 & Type 2 performance defined by IGN 4-01-02 for PE
\nMaxiFit DN50-DN300 – BSI Verification complies with EN14525
\nAquaShield 90mm-180mm – WRc certification complies with BS8588

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14-acre Manufacturing at Facility

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Most Viking Johnson products are manufactured at our 14-acre facility in Hitchin, UK, where a skilled workforce oversees every stage of production, from raw material processing and fabrication through to coating, finishing and final inspection.

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Continued investment in people, processes and technology has strengthened our manufacturing capabilities, improving lead times, product availability and production flexibility while enabling us to respond quickly to customer requirements.

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Multi-million-pound investments have created:

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An integrated manufacturing value stream.

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Supported by advanced equipment including ring bar bending machines, vertical machining centres and dedicated production lines.

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These enhancements increase capacity, improve efficiency and ensure the consistent quality our customers expect.

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Engineered for Product Integrity

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Delivering long-term pipeline reliability requires more than quality materials. Viking Johnson employs specialised manufacturing techniques to ensure every product achieves the highest levels of structural integrity and dimensional accuracy.

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Flash But Welding

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Viking Johnson is one of the few manufacturers worldwide to use Flash Butt Welding to join sleeves and rings, creating seamless, structurally sound products with exceptional strength and dimensional stability.

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This advanced welding process produces clean, oxide-free joints with deep weld penetration and low defect rates, helping to ensure long-term reliability and reduce the need for future pipe repairs.

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Where Flash Butt Welding is not appropriate, Submerged Arc Welding is used to maintain high standards of quality and performance.

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Flash Butt Welding – Viking Johnson

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Cold Expansion

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A theoretically sound weld is not sufficient and Viking Johnson (in line with AWWA C219 standards) goes a step further by cold expanding all welded sections. This not only tests the integrity of the weld but also:

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100% tests the metal in the section

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Ensures that the section is circular & repeatedly so

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Increases the strength of the piece through work hardening

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Viking Johnson’s drive for product integrity not only removes the risk of product/performance variation but looks at the wider product integrity to exceed expectations.

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Cold Expansion – Viking Johnson

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Gasket Sealing

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Regardless of whether a coupling is dedicated or wide tolerance or how it grips a pipe, the seal is generally from the compression of an annular gasket. The more dimensionally stable the rings, the more repeatable the quality the more consistent the compression of the gasket becomes. The benefit to the customer is minimising the possibility of leakage, resulting in product loss, environmental damage and pipe repair costs.

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Viking Johnson’s drive for product integrity not only removes the risk of product/performance variation but looks at the wider product integrity to exceed expectations.ct integrity not only removes the risk of product/performance variation but looks at the wider product integrity to exceed expectations.

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Enhanced Gasket Technology – Viking Johnson

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Advanced Coating Technology

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Long-term performance also depends on effective corrosion protection.

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The majority of products are protected with Rilsan® nylon coating, a high-performance, environmentally responsible coating derived from renewable castor oil.

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Coating Process

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Selected for its exceptional corrosion resistance, flexibility and impact strength, Rilsan® helps protect products in demanding operating environments while maintaining water quality and meeting leading international drinking water approvals and standards.

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To maximise durability, Viking Johnson products undergo carefully controlled surface preparation and coating processes, including:

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Shot Blasting

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Couplings and other pipe fittings are dismantled and all component parts exposed to full shot blasting to provide an optimum cleaned surface for complete coating adhesion.

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Product Priming

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A dedicated booth ensures complete priming of components, prior to Rilsan® coating, ensuring absolute coverage and adhesion.

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Indexing Oven

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A 13 table indexing oven which provides a controlled temperature to heat components to support accurate coating applications across a wide variety of part geometry.

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Have a technical question about a product or its application?

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For more than 90 years, Viking Johnson has been designing and manufacturing high performance pipe fittings and flow control products…

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