| Actuators – Valves | Casing & Tubing | Compound | Fiberglass Pipe | Flanges Stainless Steel |
| Apollo-Compactorque | CF & I Stee | Baker | A.O. Smith | Bebitz |
| Bettis | Ipsco | Bakerline | Star Fiberglass | Ideal |
| Cooper-Cameron | Lone Star | Bestolife | Files | Gerlin |
| EIM | Mannesman | Jet-Lube | Nicholson | Kofco |
| FMC Corp. | Newport Steel | Majestic Lubricating | Metalfar | |
| Hytork | Siderca | Oil Center Research | Filters | Texas Metal Works |
| RCS | TCA | Corp. (WECO) | Crall Products | U.S. Flange |
| Rotohammer | United States Steel | Rector Seal | Filter Corp. | Western |
| Unitorq | South Coast | Filtercor | ||
| Catheads | Fram | Gauges | ||
| Anchors | G-H Foster | Couplings – Casing | Jonell | Ashcroft |
| Harbison Fischer | Retsco | Anvil International | Nowata | Conbraco |
| Hasco | Chain – Roller | Capitol Manufacturing | Peco | Duro |
| National Production | Diamond Chain | WIX | Haenni | |
| Norris/Div. Dover | Linkbelt | Couplings – Sleeve | Industry Valve | |
| Dresser | Fittings | Kenco | ||
| Batteries | Chain – Steel | Skinner Brothers | APP | Marsh Instrument |
| Duracell | American Chain. | Smith-Blair | Alloy Stainless | No-Shock |
| Eveready | Crosby | Anderson Brass | Penberthy | |
| Ray-O-Vac | Cups – Pipeline Scraper | Anvil International | Retsco | |
| Chokes | Gates Rubber Co. | Awaji Sangyo (ASK) | Trerice | |
| Belts | Best Industries, Inc. | Oil States Rubber Co. | Bonney Forge | WIKA |
| Gates Rubber Co. | McAfee | Cameo | ||
| Binders | McDonald | cups – Swab | CAP Products | Gaskets |
| ACCO | Guiberson Div. | Capitol | Flexitallic Gasket | |
| Lebus | Clamps — Hose | Oil States Rubber Co. | Custom Alloy | Garlock, Inc. |
| Blocks | APG | Petro Rubber | Dayco | HMS |
| Harrisburg, Inc. | Dayco | Skinner Brothers | Flowline | K & W Gasket |
| Standee Industries | Dixon Valve | Gerlin | Lamons | |
| Baash Ross | Gates Rubber Co. | Desanders & De-Silters | Imperial | Leader Gasket |
| McKissick | PT Couplings Co. | Brandt Company | Imperial-Eastman | Parker Seals |
| Weatherhead | Harrisburg, Inc. | Let-Lok | Utex Industries, Inc. | |
| Bolts | Hutchison-Hayes | MEGA | ||
| Dan-Loc | Clamps – Pipe | Retsco | Merit Brass | Guides |
| Lone Star Screw | M.B. Skinner | Swaco/Dresser Industries | Parker CPI/ALOK | Central Plastics |
| MTS Threaded | Powerseal Pipeline | Parker-Hannifin | Guideco | |
| Quality Bolt & Screw | Remco | Dies | Penn Machine | Oil States Rubber Co. |
| Skinner Brothers. | Baash Ross | Phoenix Forge | Oteco Equipment Co. | |
| Brushes | Smith-Blair | Demco, Inc. | Schulz | Patco |
| ORS | Hughes, Inc. | Talyor Forge | R & M Energy Systems | |
| Osborn Manufacturing | Clamps – Rod | Retsco | Trinity | |
| Rubber Set | Johnson-Fagg | Varco International | Tube Forgings | Heads – Casing & Tubing |
| Brushes – Wire | Norris. | Tube-Line | Gulfco Industries, Inc. | |
| Magnolia – (ORS) | R & M Energy | Drilling Equipment | Vallourec/Interfit | OCT/Division FMC Corp. |
| ORS | Skinner Brothers | Baash Ross | Victaulic Co. | R & M Energy Systems |
| Osborn Manufacturing | Dresser-Ideco | Vogt | Wellhead, Inc. | |
| Clips -Wire Rope | Gardner-Denver | WFI International | ||
| Cans | ACCO | Baash Ross | Hose | |
| Brooking | McKissick | Hughes, Inc. | Flanges – Forged | Gates Rubber Company |
| D.L. Goldenrod | Closures – Pipeline | Vargo International | Bebitz | Dayco |
| Eagle (ORS) | KF Industries | Woolley Tool | Boltex Inc. | Gates Rubber Company |
| Eagle Manufacturing. | R & M Energy | Flanges, Inc. | Parker Hannifin | |
| Justrite Manufacturing | Oilwell | Elevators. Sucker Rod | Kofco | Weatherhead |
| Plews | Hasco | Crall Products | National Flange | |
| Gott/Rubbermaid | OCT/Division FMC | Norris | Metalfar | |
| Igloo Corporation | Trinity Fitting |
| Injectors – Chemical | Ipsco | Pumps-Positive | Shakers | Valves-Butterfly | |
| Arrow Specialty | Kaiser | Displacement | Brandt | Apollo | |
| Richart Distributing | LaClede | Abel Pumps | Hutchison Hayes | Centerline | |
| TXT Texsteam | Lone Star Steel | Arrow Engine | Line Belt | Cooper Cameron | |
| Vega Manufacturing | LTV | Bear Equipment | Retsco | Demco | |
| Western Chemical | Mannesman | Bowie Pumps | Flowseal | ||
| NAPA | Don-Nan | Sheaves | Hale Manufacturing | ||
| Insulation Kits | Newport | Flomore Pumps | Dayco | KF Industries | |
| Advanced Products | North Star Steel | Gardner-Denver | Electron | Milwaukee | |
| Central Plastics Co. | Northwest Pipe | G-D Jetting Systems | Gates | Victaulic | |
| PSI Products | Okaya | Kamat | Weco | ||
| Quanex | LMI Power | Tanks | |||
| Joints – Pup | Sandvik | McFarland | Challenger Tank | Valves-Check | |
| Aztec | SAW Pipe | MTH Pumps | Permian Tank | Arrow Valve | |
| UPCO | Sawhill | National Oilwell | United Fiberglass | Balon | |
| Texas Pipe Threaders | Schoeller-Bleckman | Netzsch | White Tank | Marlon Mission | |
| Texas Pup | Sharon | Oilwell Hydraulics | Texsteam | ||
| Stupp Corporation | Peroni Pompe | Tape | Tom Wheatley | ||
| Joints – Swivel | Sumitomo | Raven Pumps | 3M | Proquip | |
| Best Swivel Joints | TAD -USA | Roper Pumps | Polyken | Wheatley | |
| Chicksan/FMC | Tex- Tube, Inc. | Texsteam Inc | Royston | ||
| Western Industries | Tubacex | Union Pumps | Valves-Gate | ||
| United States Steel | Warren Rupp | Thermometers | Cooper-Cameron | ||
| Motors | Vallourec | Wheatlet/Gaso | American Valve | DSI | |
| ABB | Webco | Wirth | Ashcroft | OMB | |
| Baldor Electric | Wheatland Tube | Marsh Instrument | RP&C | ||
| Brook Crompton | Rags-Wiping | Trerice | Velan | ||
| Franklin Electric | Pistons – Slush Pump | Kamen Wiping | Wika | ||
| General Electric | Gardner-Denver | Kimberly Clark | Valves-Knife Gate | ||
| Marathon | Harrisburg, Inc. | Southern Waste | Tubing | L&M | |
| Teco-Westinghouse | Reed American | American | Rovalve | ||
| Toshiba Electric | Southwest | Rods – Polish | Brutco | Velan | |
| Oteco | Hasco | Gibson | |||
| Mud – Mixers | Southwest | Norris | Greenville | Valves-Mud | |
| Brandt Company | Trico | Handy & Harman | Cooper-Cameron | ||
| Hutchison-Hayes | Plugs -Bull | Imperial/Stride | Oteco | ||
| Retsco | Anvil International | Rods-Slush Pump | Sandvik | ||
| Capitol Manufacturing | Harrisburg | Schoeller-Bleckman | Valves-Needle | ||
| Nipples | Southwest | Webco | Anderson-Greenwood | ||
| Anvil International | Pumps-Centrifugal | Balon | |||
| Cameo | American Turbine | Rods – Sucker | Unions | Hamlet | |
| Harbison-Fischer. | Barnes/Crown | Norris | Anvil Int’l | Marsh | |
| Merit Brass | Crane Deming | UPCO | Boltex | PGI International | |
| Westbrook | Discflo Pumps | Kemper | |||
| Double Life Corp | Rope – Wire | Thornhill-Craver | Valves-Relief | ||
| Pipe – Standard & Line | Durco | Bethlehem Wire | Weco | Baird Manufacturing | |
| American Steel Pipe Co. | Gorman Rupp | Paulsen Wire Rope | Cooper Cameron | ||
| Avesta Sheffield | Goulds Pumps | Rochester Wire Rope | Valves-Ball | Crosby Gauge | |
| Bellville Tube | Griswold | Union Wire Rope | Apollo | Oteco | |
| Berg | Hazleton | Balon Corp | Taylor | ||
| Bristol | J-Line | Rubbers-Pipeline | Cooper Cameron | ||
| CF & I Steel Corporation | Kem — Tron | Scraper | MCF | Valves-Stainless | |
| CSI | Paco | Gates Rubber | Nutron | Aloyco | |
| Dalmine | Ruhr Pumpen | Girard Poly-Pig, Inc. | PBV | Cooper-Cameron | |
| Damascus | Sundyne/Sunstrand | Velan | Trinity | ||
| Davis | Vertiflo | Seats-Slush Pump | Victaulic | Velan | |
| Douglas | Warman | Harrisburg | Worcester | Warren |