| Name | Country | Market Cap (US$) |
|---|
| Kinder Morgan Energy Partners LP | United States | 12,476 |
| MOL (Magyar Olaj es Gazipari) Rt. | Hungary | 4,363 |
| Plains All American Pipeline, L.P. | United States | 3,730 |
| Kinder Morgan Management | United States | 3,206 |
| Enbridge Energy Partners, L.P. | United States | 2,653 |
| TEPPCO Partners, L.P. | United States | 2,337 |
| NuStar Energy LP | United States | 2,030 |
| Buckeye Partners, L.P. | United States | 1,553 |
| Inter Pipeline Fund | Canada | 1,416 |
| Sunoco Logistics Partners L.P. | United States | 1,078 |
| ShawCor Ltd. | Canada | 925 |
| MarkWest Energy Partners, L.P. | United States | 687 |
| Holly Energy Partners, L.P. | United States | 321 |
| TransMontaigne Partners L.P. | United States | 165 |
| Badger Income Fund | Canada | 144 |
| Bryanskoblgaz OAO | Russia | 55 |
| Genesis Energy Holdings Ltd | Hong Kong | 49 |
| Vladimiroblgaz OAO | Russia | 36 |
| Kyosei Rentemu Co., Ltd. | Japan | 36 |
| KSB Pumps Company Limited | Pakistan | 35 |
| Societe de Transport des Hydrocarbures par Pipelines | Tunisia | 25 |
| SungWonPipe | South Korea | 22 |
| Huffaz Seamless Pipe Industries Limited | Pakistan | 14 |
| Petro Resources Corp | United States | 12 |
| Kirovoblgaz OAO | Russia | Public |
| Kostromaoblgaz OAO | Russia | Public |
| Lenoblgaz OAO | Russia | Public |
| Mahalaxmi Seamless Limited | India | Public |
| Newron Sport | United States | Public |
| Oreloblgaz OAO | Russia | Public |
| Orenburgoblgaz OAO | Russia | Public |
| Saratovoblgaz OAO | Russia | Public |
| Smolenskoblgaz OAO | Russia | Public |
| Tambovoblgaz OAO | Russia | Public |
| Transneft | Russia | Public |
| Tulaoblgaz OAO | Russia | Public |
| Tveroblgaz OAO | Russia | Public |
| Underground Solutions, Inc. | United States | Public |
| Yaroslavoblgaz OAO | Russia | Public |
|
