National Industrial Supply

National Industrial Supply is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Valves & Fittings

North American Industry Classification System (NAICS) Categories:

• Industrial Supplies Merchant Wholesalers > Valves, Fittings & Gears > Valves & Fittings

Standard Industry Classification (SIC) Categories:

• Industrial Supplies > Valves, Fittings & Gears > Valves & Fittings