| Business | Phone |
| Atlas Fluid Controls Corp 9206 Emmott Rd A, Houston 77040 | (713) 937-7335 |
| R Smith & Son 2605 Chapman St, Houston 77009 | (713) 223-8495 |
| Shaffer Lockwood 875 Lockwood Dr, Houston 77020 | (713) 672-1711 |
| Protector Specialties Inc 5615 Clara Rd, Houston 77041 | (713) 896-8006 |
| Shaw Alloy Piping Products 7330 Neuhaus St, Houston 77061 | (713) 649-4277 |
| Valvtechnologies Inc 6600 Deihl Rd, Houston 77092 | (713) 860-0400 |
| Wheatland Tube Co 5601 Canal St, Houston 77011 | (713) 928-6437 |
| Texas Metal Works Inc 13770 Industrial Rd, Houston 77015 | (409) 833-5601 |
| Valve Systems & Controls Inc 501 W 38th St, Houston 77018 | (713) 697-2900 |
| Penn Machine Of Texas 315 N Wayside Dr, Houston 77020 | (713) 679-7900 |
| Piping Products Inc 5814 Harvey Wilson Dr, Houston 77020 | (713) 675-1774 |
| R B Fittings & Flanges 6510 Madrid St, Houston 77021 | (713) 741-6621 |
| S & R Svc Inc 4409 Haygood St, Houston 77022 | (713) 695-5274 |
| Velan Valve Corp 730 N Post Oak Rd 311, Houston 77024 | (713) 682-1084 |
| Precision Components 7301 Galveston Rd, Houston 77034 | (713) 947-8888 |
| Wheeling Machine Products 12047 Proctor St, Houston 77038 | (281) 999-6230 |
| Bentrade Inc 16021 Lakeview Dr, Houston 77040 | (713) 937-8117 |
| Specialloy Inc 11430 Brittmoore Park Dr, Houston 77041 | (713) 856-8600 |
| Webster Machine Co 10035 Grover Ln, Houston 77041 | (713) 462-3536 |
| Schulz Usa Inc 3700 Claymoore Park Dr, Houston 77043 | (713) 263-9600 |
| Valves & Ind Resources Inc 5959 S Sam Houston Pkwy E, Houston 77048 | (713) 991-3700 |
| T L Hiner Co 9834 Windmill Park Ln, Houston 77064 | (281) 890-7151 |
| Watts Acv Inc 8550 Hansen Rd, Houston 77075 | (713) 943-0688 |
| Wagi Valve Co Inc 11211 Katy Fwy 505, Houston 77079 | (713) 460-1909 |
| Phoenix Energy Products 1700 Broadfield Blvd 207, Houston 77084 | (281) 820-6600 |
| Phoenix Stainless & Alloy Inc 6516 Rupley Cir, Houston 77087 | (713) 645-3022 |
| Pressure Nipple Inc 6430 Springer St, Houston 77087 | (713) 641-2325 |