1950

Kiwa’s evolving quality mark

Since Kiwa’s first inspections, manufacturers have been able to use the Kiwa mark on inspected and approved products.

Manufacturers could use the Kiwa mark on inspected and approved products. The stamp for pipes started out in the late 1940s in two forms: one with waves for water mains pipes and one with a flame for gas pipes. They bore the name KIWA and a letter or name to indicate the factory that produced them.

Scroll down to see how the Kiwa quality marks have changed through the decades.

Asphalted water mains pipes. Placed by the Inspector, without contract.

Asphalted water Key & Kramer mains pipes. Placed by the manufacturer, under contract.

Asphalted Nooitgedacht water mains pipes. Placed by the manufacturer, under contract.

Asphalted Rhemania water mains pipes. Placed by the manufacturer, under contract.

Gas supply pipes from Nooitgedacht. Placed by the factory.

Pipes and accessories not processed under contract and if the pipes had not been approved (such as old pipes). Placed by the inspector, limited inspection.

Pipes and accessories that had not been approved, or that concerned the processing referred to in ‘Announcements 13 and 15’. Placed by the factory Rhemania.

Red-lead pipes not under contract. Placed by the inspector.

Red-lead pipes under contract. Placed by the factory Key & Kramer.

GIVEG quality mark, glued by manufacturer ‘Key & Kramer’ under contract.

GIVEG quality mark, glued by manufacturer ‘Nooitgedacht’ under contract.

Since 2008, the water supply logo may be carried by sanitary products certified by Kiwa.