Manufacturing, Production & Wholesale

Since 1945, H-P Products, Inc., premier manufacturer of central vacuums and tubing-related products, has established an internationally recognized operation developed on the genuine principles of producing high-quality products, while servicing the needs of a wide customer base. Superior service and performance practices that key executives have instilled in the company have positioned H-P as a leader in the tubular products and central vacuum industries.

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Solutions for the most challenging corrosion issues found in the chemical processing, sulfuric acid, hydrometallurgy, regenerative thermal oxidizer and chlor alkali industries. Together, the three companies of Knight Material Technologies design, manufacture and install complete solutions for the harshest environments.

With experience dating back to the 1970s, OTC Services, Inc. holds its position as the industry standard for the remanufacturing and repair of dry-type and liquid-filled transformers for both industrial and utility clients. Now, with the OTC integration into the SGB-SMIT Group, we now bring over 100 years of design and manufacturing experience to the transformer market.