K. P. den Hartogh

Van Leeuwen Pipe & Tube Corp. engaged in operating trading company that specializes in steel pipes, valves, and fittings. It offers round tubes, hollow sections, pipe components, bar steel. valves, and beams. The firm also offers material treatments, testing and inspection, logistics services, project management, and digital services. The firm serves fluid power, equipment manufacturing, steel constructions, process, and power markets. The company was founded on July 18, 1975 and is headquartered in Houston, TX.

Koninklijke Ahrend BV operates as a financial holding company which engages in furniture related business. The company was founded by Jacobus Ahrend in 1896 and is headquartered in Sint-Oedenrode, the Netherlands.

van Leeuwen Buizen Europa BV manufactures and distributor of steel pipes, valves and fittings. The company is headquartered in Zwijndrecht, the Netherlands.

P. van Leeuwen Jr's Buizenhandel BV supplies iIron and steel products. The company is headquartered in Zwijndrecht, the Netherlands.

Joh. Mourik & Co. Holding BV operates as a holding company with interest in concrete repairs, electrical engineering, roofing, plumbing and integral maintenance of real estate. The company is headquartered in Groot-Ammers, the Netherlands.

Part of Allianz SE, Universal Leven NV is a Dutch company that operates international research universities. The company is based in Leiden, the Netherlands.