Petrofac1

Larsen & Toubro (L&T)2

SNC-Lavalin3

Saipem4

Wood Group5

Galfar6

Worley Parsons7

NPCC8

KBR9

Hyundai Engineering & Construction10

McDermott11

JGC Group12

CB&I13

Technip14

CCC15

GS Engineering16

Target Engineering17

Fluor18

Amec Foster Wheeler19

Mott MacDonald20

Tecnicas Reunidas21

Faithful+ Gould22

Bechtel23

Lamprell24

Samsung Engineering25

SK Engineering & Construction26

CHM Hill27

Tecnimont28

Daewoo Engineering & Construction29

Jacobs Engineering Group Inc30