
Customizable Tanks: Versatile Liquid Storage Solutions
Den Hartog’s Ace Roto-Mold makes durable, UV-/chemical-resistant polyethylene tanks (vertical, horizontal, etc.) with translucent gallon indicators for industrial/agricultural use.
Den Hartog Industries
Where Innovation Meets Manufacturing Mastery

Den Hartog Industries offers comprehensive services from design and production to customer service, quality assurance, and delivery, catering to the agricultural, industrial, OEM, and marine industries. Known for innovation and superior quality, the company is dedicated to meeting customer needs and continuously improving processes through the involvement of all employees.
Founded by John and Ann Den Hartog in 1976 in Hospers, Iowa, Den Hartog Industries remains a family-owned business, now in its second generation. With over 381,000 square feet of facilities and 350 employees, the company has expanded into four divisions: Ace Roto-Mold Rotational Molding, Injection Molding, Blow Molding, and Sowjoy Metal Fabrication. Their services include custom molding, metal fabrication, assembly, packaging, and engineering support with advanced 2D, 3D, and solid modeling capabilities.
Tailored Tank Solutions
Den Hartog Industries’ Ace Roto-Mold division offers a comprehensive range of polyethylene tanks for various industrial and agricultural applications. Their product line includes vertical storage tanks for stationary liquid containment, horizontal leg tanks ideal for transport, cone-bottom tanks that facilitate complete drainage, and elliptical tanks known for their low-profile design enhancing stability. Additionally, Den Hartog manufactures specialty tanks designed for unique storage needs. Made from medium- or high-density polyethylene with UV inhibitors, these tanks offer durability and chemical resistance. Their translucent walls include gallon indicators for easy monitoring.
The Harrington Difference
Providing over 60 years of exceptional service
Harrington offers a comprehensive range of product solutions from Den Hartog Industries. Call our toll-free number at 1-800-213-4528 or use the contact form below.
Commitment to Quality and Customer Satisfaction
Buy your next product from Harrington and experience the difference.
Call our toll-free number at 1-800-213-4528 or use the contact form above for any questions regarding our comprehensive process solution products.