- A Tarler Inc
- AAA Technology & Specialties
- AKMLLC
- American Hanger
- American Pipe Supports
- American Pipe Supports
- Anvil International Inc
- Atlantic Supports Engineering
- Baltimore Windustrial Co
- Bergen Power
- Brooks Window Cleaning & Home
- Carpenter & Paterson
- Carpenter & Paterson Inc
- Carpenter & Paterson Inc
- Carpenter & Paterson Inc
- Chicago Hanger Products
- Chicago Hanger Products
- Clement Support Svc
- Clement Support Svc
- Clement Support Svc
- Cooper B-Line
- Cooper B-Line
- Cooper B-Line
- Cooper B-Line
- Cooper B-Line
- Girard Development Inc
- Globe Pipe Hanger Products
- Grinnellcorp
- Gulf State Hangers & Supports
- Hughes Supply
- Hughes Supply Inc
- Jefferson Pipe & Supply Inc
- Jove JTI Mfg
- Kagineering
- Lisega Inc
- Michigan Hanger Co
- Michigan Hanger Co Inc
- Modern Pipe Supports Corp
- National Pipe Hanger Co
- National Pipe Hanger Corp
- Northside Packaging Corp
- Omega Industrial Suppliers Inc
- PHD Mfg Inc
- PHS Industries Inc
- Pipe Shields Inc
- Piping & Equipment Inc
- Piping Accessories Inc
- Piping Technology & Product
- Power Utlilty Products Inc
- San Antonio Pipe & Supply
- Slinger Corp
- Specialty Piping Products
- Specialty Products
- T & L Pipehangers & Steel Inc
- U S Sales Co
- U S Sales Co
- U S Sales Co
