Exhibit 21



Subsidiaries



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|-------------------------------------------------------------------------------------------------------------------------------
|Varco International Inc. (US-DE)                                                                                               
|Varco U.S. Holdings Inc. (US-DE)                                                                                               
|Varco US Finance Inc. (US-DE)                                                                                                  
|Varco do Brasil Ltda. (Brazil)                                                                                                 
|Varco Al-Mansoori LLC (UAE-49%)                                                                                                
|Varco International Inc. Pte. Ltd. (Singapore)                                                                                 
|Varco BJ B.V. (Netherlands)                                                                                                    
|Varco (Sara) India Pvt. Ltd. (India-60%)                                                                                       
|Rig Technology Limited (UK)                                                                                                    
|Varco (UK) Ltd. (UK)                                                                                                           
|Varco BJ FSC Inc. (Barbados)                                                                                                   
|Varco de Venezuela C.A. (Venezuela)                                                                                            
|Herramientas Varco SA de CV (Mexico-49%)                                                                                       
|XST Holdings, Inc. (US-TX-9.57%) (fka SmarTract, Inc.)                                                                         
|Brandt Interests Inc. (80%-US-DE)                                                                                              
|Brandt Energy Environmental LP (1% US-TX)                                                                                      
|TVI Holdings LLC (US-DE)                                                                                                       
|Tubo-FGS LLC (US-DE) Gen. Prtnr. (1%)                                                                                          
|Fiber Glass Systems LP (US-TX)                                                                                                 
|Varco LP (US-DE)                                                                                                               
|LL TT Ltd (Trinidad)                                                                                                           
|Servizi Ispettivi Srl (Italy) - 95%                                                                                            
|Star Sudamtex SA (50%-Venezuela)                                                                                               
|Fiber Glass Systems Holding LLC (US-DE) Ltd. Prtnr. (99%)                                                                      
|Fiber Glass Systems LP (US-TX)                                                                                                 
|Fiber Glass Systems LP Branch (Kazakhstan)                                                                                     
|Varco LP (DE)                                                                                                                  
|Brandt Co de Argentina (Argentina-.1% inactive)                                                                                
|Varco I/P Inc. (US-DE)                                                                                                         
|Smart Screen Systems Inc. (US-MN)                                                                                              
|Varco International do Brasil Equipamentos e Servicos Ltda (Brazil)(fka Tuboscope Vetco do Brasil Equipamentos e Servicos
Ltda)
|Tuboscope Vetco (Thailand) Ltd. (Thailand)                                                                                     
|Varco LPMoscow Branch                                                                                                         
|VCR (Panama) Inc. (fka Tuboscope Vetco Services (Panama) Inc.)                                                                 
|Tuboscope Vetco Services (Panama) Inc. -Abu Dhabi branch                                                                       
|Tuboscope Vetco Services (Panama) Inc. -Kuwait branch                                                                          
|Tuboscope Vetco Services (Panama) Inc. -Singapore branch                                                                       
|Tuboscope Vetco (Nigeria) Ltd. (40%-Nigeria)                                                                                   
|Vetco Enterprises AG (Switzerland)                                                                                             
|Tuboscope Vetco Osterreich GmbH (Austria)                                                                                      
|Vetco Saudi Arabia Ltd. (P/S-45%)                                                                                              
|Tuboscope Vetco (Deutschland) GmbH (Germany)                                                                                   
|Tuboscope Vetco (Deutschland) GmbH (Germany) -Bahrain branch                                                                   
|Tuboscope Vetco (Deutschland) GmbH (Germany) -France branch                                                                    
|Tuboscope Vetco (Deutschland) GmbH (Germany) -Oman branch                                                                      
|Tuboscope Vetco (Deutschland) GmbH (Germany) -Netherlands branch                                                               
|Tuboscope Vetco (Deutschland) GmbH (Germany) -Egypt branch                                                                     
|Tuboscope Vetco Technology GmbH (Germany)                                                                                      
|Tuboscope Vetco Technology GmbH (Germany)-Russia Representative Office                                                         
|Tuboscope Vetco Technology GmbH (Germany) -Equatorial Guinea branch                                                            





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|----------------------------------------------------------------
|Tuboscope Vetco (Brunei) SDN BDH (49%)                          
|Vetco Abu Dhabi (P/S-United Arab Emirates-45%)                  
|Vetco Coating GmbH (Germany)                                    
|Tuboscope Vetco de Argentina, S.A. (Argentina)                  
|Tuboscope Vetco Canada Inc. (Canada)                            
|Varco Shearer Inc. (fka Varco Coating Ltd.) (Canada)            
|V/I Canada Inc. (fka ICO Canada Inc.) (Canada)                  
|Tuboscope Pipeline Services Canada Inc. (Canada)                
|Tuboscope (Far East) Pte Ltd. (Singapore)                       
|Pesaka Inspection Services SDN.BDH (49%-Malaysia)               
|Tuboscope Far East Pty Ltd.-Australia branch                    
|Tuboscope and Co., LLC (Oman) (70%-Oman)                        
|Tuboscope Norge AS (Norway)                                     
|Varco Norge A/S (Norway)                                        
|CTES (P/S US - TX-25%)                                          
|Tulsa Equipment Manufacturing Co (US-OK)                        
|Tuboscope Services de Bolivia S.A. (Bolivia)                    
|Brandt Servicios de Petroleros S.A. (Peru)                      
|Varco Canada Limited (Canada)                                   
|Wellsite Gas Detection Inc. (Canada)                            
|Tuboscope Pipeline Services Inc. ( 77%-US-TX)                   
|Vetco Pipeline Services Inc. (US-TX)                            
|Vetco Pipeline Services Ltd. (Canada)                           
|Tuboscope Vetco Mexico S.A. de C.V. (Mexico)                    
|Servicios Tubulares TT SA de CV (Mexico) (1%)                   
|Varco L.P. - Brandt Norge (Norway Branch)                       
|MSD de Venezuela C.A. (Venezuela)                               
|Tuboscope Vetco (France) S.A. (France)                          
|Texas Oil Tools Inc. (US-NV)                                    
|Tuboscope MECL (Trinidad) Ltd. (50% P/S)                        
|Varco L.P.-Ecuador Branch (Ecuador)                             
|Coil Services (North Sea) Limited (UK) (fka Quality Tubing (UK))
|Quality Tubing FSC (Virgin Islands)                             
|Quality Tubing SA (Venezuela)                                   
|Tube-Kote Inc. (US-TX)                                          
|Church Oil Tools (US-TX)                                        
|Tuboscope (Holding US) Inc (US-DE)                              
|Harbin WFOE LLC (China)                                         
|Varco (Beijing) Co. Ltd. (WFOE) (China)                         
|FGS Fiber Glass SuZhou Co.Ltd. (China)                          
|Varco UK Acquisitions Ltd. (UK)                                 
|Elmar Services Ltd (UK)                                         
|Elmar Engineering Ltd. (UK)                                     
|Elmar Screens Ltd. (UK)                                         
|Elmar Rentals Ltd. (UK)                                         
|Elmar Casings Ltd. (UK)                                         
|Morinoak International Ltd. (UK)                                
|Tuboscope Holdings Ltd. (UK)                                    
|Hydra Rig UK Limited (fka Weston) (UK)                          
|Varco Ltd. (UK)                                                 
|Tuboscope Vetco (UK) Ltd. (UK)                                  
|Environmental Procedures (UK) Ltd. (UK)                         
|Tuboscope Vetco Capital Ltd. (UK)                               
|TVCC-Kazakhstan Branch                                          





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|Varco CIS (Russia)                                                 
|Tuboscope Vetco Moscow (Russia)                                    
|SSR (International) Ltd. (UK)                                      
|The Brandt Company (UK) Ltd.                                       
|Pressure Control Engineering Ltd. (UK)                             
|Chargewood Ltd (UK)                                                
|Enaco (UK)                                                         
|Pump Systems Ltd. (UK)                                             
|Enaco Mudcat Systems Ltd. (UK)                                     
|Mud Rentals Ltd. (UK)                                              
|Elmar Services (Middle East) Ltd. (UAE)                            
|Elmar Far East Pty. Ltd. (fka Elmar Services Pty. Ltd.) (Australia)
|Tuboscope Pipeline Services Ltd. (UK)                              
|Tuboscope Pipeline Services Inc. (23%-US-TX)                       
|NDT Systems & Services AG (Germany-23.75%)                         
|Linalog Ltd. (UK)                                                  
|Inspecciones y Pruebas No Destructivas SA de CV (Mexico) 99.9%     
|Environmental Procedures, Inc. (US-DE)                             
|Advanced Wirecloth Inc. (US-LA)                                    
|Tuboscope Mexico SA de CV (Mexico)                                 
|Servicios Tubulares TT SA de CV (Mexico) (99%)                     
|Tuboscope Brandt de Colombia Branch (fka EPI Colombia Branch)      
|Drexel Oilfield Services WLL (49% Dubai, UAE)                      
|Tuboscope Brandt de Venezuela SA (Venezuela)                       
|Brandt Company de Argentina SA (Argentina)                         
|Screen Manufacturing Company Ltd. (Trinidad)                       
|Venwell International Inc. Trinidad branch                         
|Hydra Rig, Inc. (US-DE)                                            
|Elmar Far East Pte. Ltd. (Singapore) (fka Eastern Oil Tools)       
|Servizi Ispettivi SRL (Italy-5%)                                   
|Brandt Oilfield Services (M) Sdn Bhd (29% Malaysia)