Norsk Teknisk Porselen Products AS

Address: Trosvikstranda 46 - 48, 1608 FREDRIKSTAD
Phone: +47 69383000

Uniting society & environmental technology

Norsk Teknisk Porselen Products AS’ (NTP AS) customers have trusted the company for nearly 100 years. This has gradually contributed to the further development of NTP AS. The company is a leading national supplier with a substantial and ever increasing export share. NTP AS’ strengths are competence, product range, quality and adaptability.
Norsk Teknisk Porselen Products AS


NTP AS has a wide product range that allows it to satisfy many market segments. This ability has increased exports significantly in recent years. Today the company’s products are exported to more than 30 countries around the world.
The company’s product range covers low, medium and high-voltage ceramics and includes insulators for all types of lines, sub-stations and apparatus. Although insulators are manufactured according to IEC standards, other national or international types can be supplied as well.


• Pin insulators
• Line post insulators
• Post insulators
• Hollow porcelains
• Insulators for DC-electro filters (ESP insulators)
• Insulation beads
• Epoxy resin insulators
• Various press bodies
• Composite insulators


As NTP AS sees it, quality is not only related to the products themselves but also to the whole process – from the quotation stage through order handling, design, manufacturing and to after-sales services. Since 1982 the company has had an independent QA department that secures high-quality work in every department. In 1994 NTP AS was awarded the NSEN ISO 9001 certificate. This guarantees high-quality products and states strict requirements regarding development, design, manufacturing, installation and servicing.


In order to focus on its customers’ needs, NTP AS has the following philosophy to ensure customer satisfaction:
• Respond quickly to all enquiries
• Offer both tailor made and standardized solutions
• Offer price-competitive products
• Offer short and reliable delivery times
• Deliver high-quality products
• Perform excellent after-sales service


NTP AS’ products require different ceramic materials. The company uses a wide range of substances, fluxes and fillers in order to fulfil its customers’ technical requirements. In order for NTP AS to offer a wide range of products, several different production methods are used. Today the company uses the wet process manufacturing method, slip casting, dry pressing, extrusion and turning as forming methods. The total output capacity is approximately 3,000 tonnes of porcelain per year.

Norsk Teknisk Porselen Products AS, ESP insulators 
ESP insulators are important components in electrostatic precipitator units.