Category A Fittings
Pipe fittings including couplings, tees, elbows, wyes, plugs, unions, nipples, pipe caps, and reducers.
| Access fitting assemblies | Rohrback Cosasco Systems |
| Branch connections | Gibson Products L.P. |
| Brass and stainless locking tube connectors | Tylok International Inc. |
| Brass fittings | Ipex Inc. |
| Breakaway valves | Arta Armaturen Und Tankgeratebau Gmbh and Co.Kg |
| Butt weld pipe fittings | Awaji Materia (Thailand) Co. Ltd. |
| Butt weld pipe fittings | Bnv Piping Products Co., Ltd Ying Kou |
| Butt weld pipe fittings | Canadoil Asia Ltd. |
| Butt weld pipe fittings | Custom Alloy |
| Butt weld pipe fittings | Erne Fittings |
| Butt weld pipe fittings | Ezeflow |
| Butt weld pipe fittings | Flowline |
| Butt weld pipe fittings | Formweld Fittings Inc. |
| Butt weld pipe fittings | Huludao City Longgang Petrochemic Pipe Fittings Factory |
| Butt weld pipe fittings | Luda (Yk) Industrial Co., Ltd. |
| Butt weld pipe fittings | Pantech Steel Industries Sdn. Bhd. |
| Butt weld pipe fittings | Tecnoforge Spa |
| Butt weld pipe fittings | Thai Benkan Company Limited |
| Butt weld pipe fittings | Tk Corporation |
| Butt weld pipe fittings | Tube Forgings Of America |
| Butt weld pipe fittings | Weldbend Corporation |
| Butt weld pipe fittings | Welding Outlet Incorporated |
| Butt weld pipe fittings | WFI International Inc. |
| Butt weld pipe fittings | Yangzhou Huayu Pipe Fitting Co. Ltd. |
| Butt weld pipe fittings | Zibo Wel-Fit Metal Product Co. Ltd. |
| Carbon and stainless butt weld fittings | Haitima Corporation |
| Cast and malleable iron fittings | Jinan Meide Casting Co., Ltd. |
| Cast bronze fittings | Lee Brass Company |
| Cast iron flanged fittings | Mueller Co. |
| Clamp connector fittings | Swagelok Biopharm Services Company |
| Clamp type pipe fittings | Grayloc Products, Div. Of Abb Vetco Gray Inc. |
| District heating components | Logstor A/S |
| Fittings up to 4″ dia | Viega Propress Pipe Systems |
| Forged branch connections | Phoenix Forge |
| Forged pipe fittings | Bonney Forge Corporation |
| Forged pipe fittings | Capitol Manufacturing |
| Forged pipe fittings | I.M.L. Industria Meccanica Ligure S.P.A. |
| Forged pipe fittings | Omc Raccordi |
| Forged pipe fittings | Pennsylvania Machine Works Inc. |
| General fittings | Aignep |
| General fittings | Ingersoll Rand |
| General fittings | Pro-Flange Ltd |
| General stainless steel fittings up to 12″ dia | Andron Stainless Limited |
| Grooved fittings | Shurjoint Metals Inc. |
| Grooved fittings | Victaulic Company Of Canada Ltd. |
| High pressure forged fittings up to 4″ dia | Vaibhav Fitting India Pvt. Ltd. |
| Instrument tube fittings | Generant Company Inc. |
| Malleable iron and bronze fittings | Siam Fittings |
| Malleable iron pipe fittings | PT. Tri Sinar Purnama |
| Malleable iron pipe fittings | Shijiazhuang Donghuan Malleable Iron Castings Co. |
| Malleable iron pipe fittings | Ward Manufacturing Inc. |
| Nipples and couplings | Beck Manufacturing Inc. |
| Olets | Viar S.p.A. |
| Pipe fitting connectors | Marshall Excelsior Company |
| Pipe fittings | Both-Well Steel Fittings Co. Ltd. |
| Reducers swages and plugs | Mills Iron Works |
| Socket and threaded fittings | Ulma-Forja, S.Coop |
| Stainless and brass fittings | Merit Brass |
| Stainless butt weld fittings | Kanzen Tetsu Sdn Bhd |
| Stainless butt weld pipe fittings | Felker Brothers Corporation |
| Stainless butt weld pipe fittings | Outokumpu Stainless Tubular Products |
| Stainless elbows, reducers and tees | Douglas Barwick Inc. |
| Stub ends | Hilton Forge |
| Stub ends | Jero Inc. |
| Threaded malleable iron fittings | Anvil International Inc. |
| Up to 12″ seamless Stub End | The Colonial Machine Company Inc. |
| Vacuum breakers | The Johnson Corporation |
| Various pipe fittings | Parker Hannifin Corporation |