404 drain crown

Company
Industrial valves installed in Picardy, GRK offers a wide range of products for building professionals and traders. > Read more
Manufactoring
Foundry, stamping, machining, discover the manufacturing process of GRK valves. > Read more
Product range
We cover all the needs of building professionals and offer a wide range of references adapted to each particular case. > Read more
"Ready-to-place" solutions
Our ready-to-install kits will save you time on all your sites: discover the range of solutions and make your life easier. > Read more
Commercial department
Need advice? Our sales representatives are above all specialists who will be able to answer your questions. Find yours on the map. > Read more