파이프라인 서비스 연구

주요 선수 : Barnard Construction Company Inc., Sunland Construction Inc., Snelson Companies Inc., EnerMech Ltd, Baker Hughes Co.

주요 선수 : Tenaris SA, Tetra Tech Inc., Mistras Group Inc., Trican Well Services Ltd, Baker Hughes Co.

주요 선수 : MasTec Inc., SGS SA, OCA Global, Intertek Group PLC, Fluor Corporation

주요 선수 : Baker Hughes A GE Co, EnerMech Ltd., TD Williamson Inc., STATS Group, Dacon Inspection Services Co. Ltd.

주요 선수 : Dacon Inspection Services Co. Ltd, EnerMech Ltd, TD Williamson Inc, STATS Group, China Petroleum Pipeline Engineering Co., Ltd

주요 선수 : Baker Hughes A GE Co, TD Williamson Inc, Oil States Industries Inc., EnerMech Ltd, STATS Group

주요 선수 : Rosen Group, TD Williamson, Inc, Romstar Sdn. Bhd., Dacon Inspection Services Co Ltd, Baker Hughes Company

주요 선수 : Linde PLC, Oceaneering International, Inc., Baker Hughes Company, Sulzer Ltd., National Energy Services Reunited Corp.