| S.No. | Company Name/Client List | S.No. | Company Name/Client List |
| 1 | A-1 Industries | 56 | ISGEC John Thompson |
| 2 | A-Plus Projects & Technology Pvt. Ltd. | 57 | ICB Technimont |
| 3 | Aerotherm Products | 58 | Jnk India P. Ltd. |
| 4 | Aegis Ltd. Essar Engineering सेवाएं | 59 | K.S.Industries |
| 5 | Allied Alloy Products | 60 | Kamal Engineering Corporation |
| 6 | Auro Mira Engrgy Pudukottai India Ltd. | 61 | Kochi Refinery |
| 7 | Anand Seam Less | 62 | Larsen & Toubro Ltd. (VADODARA, Powai, Dahej) |
| 8 | Alfa Boilers Pvt. Ltd. | 63 | Laxmi Engineering Industries Pvt. Ltd. |
| 9 | Axtel Industries Limited | 64 | Loyal Equipment Pvt Ltd |
| 10 | Alstom Project India Ltd. | 65 | Lurgi India Co. Pvt. Ltd. |
| 11 | Avadh Industries | 66 | M.E.Energy Private Limited |
| 12 | Air Products | 67 | Managalore Refinery Petrochemicals Ltd. |
| 13 | Amardeep Steel Centre | 68 | Multi Metals Ltd |
| 14 | Ammus Engineers (P) Ltd. | 69 | Nagarjuna Oil Corporation Limited. |
| 15 | Bachmann Industries India Ltd. | 70 | National Fertilizers Ltd |
| 16 | BC. Petrochemical SDN BRD. | 71 | National Thermal Power Corporation Ltd. |
| 17 | Baroda Equipments | 72 | Nirma Ltd |
| 18 | Bharat Heavy Electricals Ltd | 73 | Nuberg Engineering Ltd. |
| 19 | Bharat Heavy Plates & Vessels Ltd. | 74 | Nova Metallic Company |
| 20 | Bharat Petroleum Corp. Ltd. (Manali, Mumbai) | 75 | Nav India Enterprises |
| 21 | Bongaigaon Refinery & Petrochemicals Ltd. | 76 | Numaligarh Refinery Limited |
| 22 | Bridge & Roof Co. (INDIA) Ltd. | 77 | Paharpur Cooling Towers Ltd. |
| 23 | Bilfinger | 78 | Patels Airtemp (INDIA) Ltd. |
| 24 | C.Doctor India Pvt. Ltd. | 79 | Petrofab |
| 25 | Chennai Petroleum Corporation Ltd | 80 | Petron Engg. & Construction Ltd |
| 26 | Cethar Vessels (P) Ltd | 81 | Petrofac E&C SDN.BHD, Malaysia |
| 27 | Coen Bharat Limited | 82 | Prabha Steel Industries |
| 28 | Coil Company | 83 | Precision Tubes |
| 29 | Cool Tech Corporation | 84 | Prodev Manufacturing Company |
| 30 | Deccan Dynamics | 85 | Punj Llyods |
| 31 | Daynite Engineers | 86 | Reliance Industries Ltd. (Vadodara, Surat, Jamnagar) |
| 32 | Envair Electrodyne Ltd. | 87 | Reliance Infrastructure Ltd. |
| 33 | Essar Projects (INDIA) Ltd | 88 | Ritchfield Engineers Ltd. |
| 34 | Essar Oil Ltd. | 89 | RPF Pipes & Fittings |
| 35 | Engineers India Ltd. | 90 | Reliable Pipes & Tubes Ltd. |
| 36 | Enginemates Heat Transfer Pvt. Ltd. | 91 | Sainest Tubes Pvt. Ltd. |
| 37 | Enmaxx Engineering | 92 | Sapphire Engineering |
| 38 | Esteem Projects Pvt.Ltd. | 93 | Shrao Engineering Works |
| 39 | Filatex India Limited. | 94 | System Enginrees |
| 40 | Garden Silk Mills Ltd. | 95 | Steamtech & Co., (SULTANATE Of Oman) |
| 41 | Gea Energy Systems (BGR Energy Systems Ltd.) | 96 | Special Technical सेवाएं (Oman) |
| 42 | Gujarat Florochemical Limited. | 97 | Tamilnadu Petroproducts Ltd. |
| 43 | Gujarat State Fertilizer Company | 98 | Technip KT India |
| 44 | Geecy Engineering Pvt. Ltd. | 99 | Techno Process Equipments (INDIA) Ltd. |
| 45 | Gemini Engl-Fab Limited | 100 | Thermax Limited (B&H, C&H, R&M, Uog Division) |
| 46 | Gujarat Industries Power Company Ltd. | 101 | Thermotech Industries (INDIA) Pvt. Ltd. |
| 47 | Heurtey Petrochem India Pvt. Ltd. | 102 | Thyssenkrupp Induststries |
| 48 | Heurtey Petrochem Sa (France) | 103 | Toyo Engineering |
| 49 | Hindustan Petroleum Corporation Ltd. (Visakhapatnam, Mumbai) | 104 | Tube Products Incorporate |
| 50 | India Glycol Ltd. | 105 | Tube Weld India Ltd. |
| 51 | Indian Farmers Fertilizers Co-Op Ltd. | 106 | Transinfo Technologies Corp., Taiwan |
| 52 | ITT SPA (ITALY) | 107 | Uhde India |
| 53 | Indcon Projects | 108 | Uday Export Pvt. Ltd. |
| 54 | Indian Oil Corporation Ltd. (Haldia, Digboi, Guwahati, Mathura, Panipat, Vadodara, Paradip) | 109 | Vortex Systems |
| 55 | ISGEC Heavy Engg. Ltd. | 110 | Verispring Airfins Technology Pvt. Ltd. |
| | | 111 | Vividh Hi-Fab |
| | | 112 | Wardha Power |