Exhibit 21.1

CAMERON INTERNATIONAL CORPORATION -- SUBSIDIARIES & JOINT VENTURES

(Active as of December 31, 2011)

% Owned

State/Country of

By

% Owned

Incorporation or

Cameron International Corporation (Delaware) -- Parent - 100

Subsidiary

By CAM

Organization

1 - Cameron Algerie S.á.r.l. 13

100.000%

Algeria

1 - Cameron Al Rushaid Limited Company

50.000%

Saudi Arabia

1 - Cameron Gabon, S.A. (1 share owned by Chairman)

100.000%

Gabon

1 - Cameron/Curtiss-Wright EMD LLC

50.000%

USA (Delaware)

1 - Cameron Offshore Systems Nigeria Limited

100.000%

Nigeria

1 - Cameron Services Middle East LLC (Joint Venture - 51% owned by 3rd party)

25%

24.000%

Oman

1 - Cameron Venezolana, S.A. - (51% owned by Cameron Petroleum Equipment Group, Inc.)

49.000%

Venezuela

1 - Cameron Angola - Prestaçao de Serviços, Limitada 13

100.000%

Angola

1 - Compression Services Company

100.000%

USA (Ohio)

1 - Cooper Cameron Foreign Sales Company Ltd.

100.000%

Barbados

1 - Cameron International Holding Corp.12

88.870%

USA (Nevada)

2 - Pressure Peak for Oil Equipment and Appliances Services and General Trading, Limited Liability Private Company

100%

Iraq

2 - Cameron Lux I SARL9

100%

Luxembourg

3 - Cameron Systems Angola, Ltd.18

49%

Cayman Islands

3 - Cameron Middle East Ltd.

100%

Cayman Islands

4 - Cameron Middle East FZE

100%

United Arab Emirites

3 - Cameron Products Ltd.

100%

Cayman Islands

3 - Cameron Russia Ltd.

100%

Cayman Islands

3 - Cameron Services Russia Ltd.

100%

Cayman Islands

3 - Cameron Cayman Limited19

100%

Cayman Islands

4 - ShanDong Cameron Petroleum Equipment, Ltd.

100%

China

3 - Cameron (Trinidad) Limited

100%

Trinidad and Tobago

3 - Cameron International Malaysia Sdn Bhd (Malaysia residents own 2 shares)

99.99%

Malaysia

3 - Cooper Cameron Libya Limited

50%

Malta

3 - Cameron Lux II SARL

100%

Luxembourg

4 - Cameron Lux III SARL

100%

Luxembourg

5 - Cameron Lux V SARL16

79.760%

20.240%

Luxembourg

6  - Cameron Lux IV SARL

100%

Luxembourg

7 - NATCO Canada, ULC

100%

Canada (Alberta)

6  - Cameron Lux AUD SARL

100%

Luxembourg

6  - Cameron Lux BRL SARL

100%

Luxembourg

6  - Cameron Lux CAD SARL

100%

Luxembourg

6  - Cameron Lux EUR SARL

100%

Luxembourg

6  -  Cameron Lux GBP SARL

100%

Luxembourg

6  - Cameron Lux MXN SARL

100%

Luxembourg

6  - Cameron Lux MYR SARL

100%

Luxembourg

6  - Cameron Lux NOK SARL

100%

Luxembourg

6  - Cameron Lux USD SARL

100%

Luxembourg

6  - Cameron APME Holding Pty Ltd14

100%

Australia

7 - Cameron Australasia Pty. Ltd.

100%

Australia

8 - Cooper Cameron Valves Australia Pty. Ltd.

100%

Australia

8 - Geographe Energy Pty Ltd

100%

Australia

7 - Cameron (Singapore) Pte. Ltd.

100%

Singapore

8 - Cameron Systems Shanghai Co., Ltd.

100%

China

8 - Riyan Cameron (B) Sendirian Berhad

85%

Brunei

8 - PT Cameron Systems - (Joint Venture - 8% owned by 3rd party)

92%

Indonesia

8 - Cameron Equipment (Shanghai) Co., Ltd.

100%

China

8 - Cameron Beijing Commercial Co., Ltd.

100%

China

8 - Cooper Cameron Corporation Sdn Bhd

100%

Malaysia

8 - Cameron (Shenzhen) Systems Co., Ltd.

100%

China

8 - Cameron (Gaomi) Systems Co., Ltd.

100%

China

7 - Cameron International Malaysia Systems Sdn Bhd

100%

Malaysia

8 - Cameron Solutions Sdn Bhd

100%

Malaysia

6  - Cameron GmbH

100%

Germany

6  - Cameron Ireland Limited

100%

Ireland

6  - Cameron Systems (Ireland) Limited

100%

Ireland

6  - Cameron Italy Holding S.r.l.

100%

Italy

7 - Cameron Italy S.R.L.

100%

Italy

7 - Cameron Systems S.R.L.

100%

Italy

6  - Cameron Holding (Dutch) B.V.

100%

Netherlands

7 - Cameron Canada Corporation23

100%

Canada (Nova Scotia)

8 - Cameron Lux APME SARL

100%

Luxembourg

7 - Cameron do Brasil Ltda. (1 share owned by Cameron Lux II SARL)

100%

Brazil

8 - On/Off Manufatura e Comércio de Vávulas Ltda.

100%

Brazil

[1 share owned by Cameron Lux I SARL]

9 - Vescon Equipamentos Industriais Ltda.

100%

Brazil

6  - Cameron Petroleum (UK) Limited

100%

United Kingdom

7 - Cameron France, S.A.S.

100%

France

7 - Cameron Norge Holding AS

100%

Norway

8 - TS-Technology AS

100%

Norway

7 - Cameron Limited

100%

United Kingdom

8 - Cameron Petroleum Investments Limited

100%

United Kingdom

9 - Cameron Manufacturing (India) Private Limited

100%

India

9 - Flow Control-Tati Production Sdn. Bhd.

49%

Malaysia

8 -  Cameron Offshore Engineering Limited

100%

United Kingdom

8 - Cameron Pensions Trustee Limited

100%

United Kingdom

8 - D.E.S. Operations Limited

100%

Scotland

9 - DES Operations, Inc.

100%

USA (Texas)

8 - International Valves Limited

100%

United Kingdom

8 - Jiskoot Holdings Limited

100%

United Kingdom

9 - Jiskoot Limited

100%

United Kingdom

8 - Cameron Technologies UK Limited

100%

United Kingdom

8 - Cameron Systems Limited

100%

United Kingdom

9 - KCC Group Limited [in process of liquidation]

100%

United Kingdom

10 - KCC Resources (Jersey) Limited

100%

Jersey

8 - Axsia Group Limited [in process of liquidation]

100%

United Kingdom

9 - Axsia Limited [in process of liquidation]

100%

United Kingdom

9 - Richard Mozley Limited [in process of liquidation]

100%

United Kingdom

8 - Petreco International (Middle East) Limited

100%

United Kingdom

8 - KCC Process Equipment Limited [in process of liquidation]

100%

United Kingdom

8 - RJB Engineering (UK) Limited [in process of liquidation]

100%

United Kingdom

8 - Axsia Howmar Limited

100%

United Kingdom

9 - Fluid Processing (L) Bhd

100%

Labuan

8 - Cameron Products Limited

100%

United Kingdom

9 - Axsia Serck Baker (Nigeria) Limited (50% owned by Axsia Limited)

50%

Nigeria

9 - Fluid Processing Sdn Bhd7

20%

Malaysia

8 - Petreco-KCC Limited [in process of liquidation]

100%

United Kingdom

7 - Cameron International Holding B.V.

100%

Netherlands

8 - Cameron Energy Services B.V.

100%

Netherlands

8 - Cameron B.V.

100%

Netherlands

8 -  Cameron Holding (Norway) AS

100%

Norway

9 - Cameron Norge AS

100%

Norway

6  - Cameron Wellhead Services, LLC

100%

USA (Nevada)

7 - Cameron (Malaysia) Sdn Bhd1

49%

Malaysia

8 -  Cooper Cameron Valves Singapore Pte. Ltd.

100%

Singapore

7 - Cameron Argentina S.A.I.C. (122,700 shares owned by Cameron Petroleum Equipment Group, Inc. -1%)

100%

Argentina

7 - Cameron de Mexico S.A. de C.V. 13

100%

Mexico

6  - NATCO Luxembourg S.á.r.l.

100%

Luxembourg

7 - Cameron AS

100%

Norway

8 - Cameron Systems AS

100%

Norway

7 - NATCO Al Rushaid Middle East Ltd.6

50%

Saudi Arabia

7 - NATCO Process Systems Pte Ltd.2 (in process of liquidation; estimated to be closed April 22, 2012)

100%

Singapore

6  - Cameron Industries Limited

100%

United Kingdom

7 - Axsia Holdings Limited

100%

United Kingdom

6  - Cameron Poland sp. zo.o.

100%

Poland

5 - Cameron Korea Limited

100%

Korea

5 - Cameron Valves - Trading and Industrial Services, Sociedad Unipessoal LDA

100%

Portugal

6 - Cameron Valves & Measurement West Africa Limited

70%

Nigeria

5 - Cameron Netherlands B.V.

100%

Netherlands

6 - Cameron Egypt LLC (.1% owned by Cameron Lux III SARL)

100%

Egypt

6 - Cameron Euro Automation Center B.V.

100%

Netherlands

6- Caméron România S.R.L.

100%

Romania

6 - Cameron Investment Holding LLC (.1% owned by Cameron Lux III SARL)

100%

Russia

5 - SBS Oilfield Equipment GmbH

100%

Austria

5 - SBS Immobilienentwicklung und -verwertungs GmbH (0.1%  owned by Cameron Limited)

100%

Austria

5 - Geographe Energy Singapore Pte Ltd

100%

Singapore

6 - PT Geographe Energy Indonesia

100%

Indonesia

4 - Cameron Ireland Holding Company15

100%

Ireland

1 - Cameron (Holding) Corp.17

73.60%

26.400%

USA (Nevada)

2-  Cameron Technologies, Inc.

100%

USA (Delaware)

3 - NuFlo Finance and Royalty Company

100%

USA (Delaware)

3 - Cameron Technologies US, Inc.

100%

USA (Delaware)

2- Newco Valves, LLC11

51%

USA (Texas)

3 - Newmans SRL (80% owned by Barone Aldo)

20%

Italy

3 - Newmans Valves Limited

100%

Canada

4 - Newmans International Ltd.

100%

China (Hong Kong)

5 - Newmans Valve Australia Pty

100%

Australia

5 - Newmans Shanghai Trading Ltd.

100%

China

5 - Newmans (Yancheng) Valve Manufacturing Ltd.20

51%

China

6 - Newmans (Yancheng) Cast Steel Ltd.21

70%

China

5 - Newmans (Yancheng) Ball Valves Ltd.22

26%

China

5 - Newmans (Dalian) Forged Steel Co. Ltd.

50%

China

3 - Precision Actuation Systems LLC

100%

USA (New Jersey)

1 - Sequel Holding, Inc.

100.000%

USA (Delaware)

1 - Cameron Systems de Venezuela, S.A.

100.000%

Venezuela

1 - Cameron Energy Services International, Inc.

100.000%

USA (Ohio)

2 - Canada Tiefbohrgeräte und Maschinenfabrik GmbH 13

100%

Austria

1 - Cameron Petroleum Equipment Group, Inc.

100.000%

USA (Delaware)

1 - NATCO Group Inc.

100.000%

USA (Delaware)

2 - Cameron Resources Inc.

100%

USA (Delaware)

3 - Cameron Solutions Inc.

100%

USA (Delaware)

4 - NATCO do Brasil Industria, Comercio e Servicos de Petróleo e Gás Ltda. (1% owned by NATCO Holdings LLC)

100%

Brazil

4 - Cameron Colombia Ltda (1 share owned by NATCO Holdings LLC)

100%

Colombia

4 - NATCO Holdings LLC

100%

USA (Delaware)

4 - Linco-Electromatic, Inc.

100%

USA (Texas)

4 - Connor Sales Company, Inc.

100%

USA (North Dakota)

4 - NATCO Group de Venezuela, S.A.

100%

Venezuela

4 - Cameron Japan Ltd.3

60%

Japan

4 - Cameron Inc.

100%

USA (Louisiana)

5 - TEST International8

100%

Cayman Islands

5 - TEST Angola - Tecnologia e Serviços Petrolíferos, Lda.4

49%

Angola

5 - TPS (Technical Petroleum Services) Nigeria Limited

100%

Nigeria

5 - Process Analytical Applications, Inc.

100%

USA (Texas)

5 - TEST Saudi Arabia Ltd.10

50%

Saudi Arabia

4 - Petreco-KCC Holding, Inc.

100%

USA (Delaware)

4 - NTG Group de Mexico, S. de R.L. de C.V. (1% owned by NATCO Group Inc.)

100%

Mexico

4 - NTC Technical Services Sdn. Bhd.

100%

Malaysia

1 - Cameron Village LLC

100%

USA (Delaware)

1 - LeTourneau Technologies Drilling Systems, Inc.

100%

USA (Texas)

2 - LeTourneau Technologies Asia Pte. Ltd.

100%

Singapore

2 - LeTourneau Technologies Middle East FZE

100%

United Arab Emirites

1Local Malaysian law requires that a majority of stock be owned by local residents. Attorney/agents hold 51% of stock on CIC's behalf.

2 Dormant. Created for aborted acquisition.

3 20% owned by Daichi; 20% owned by Modec

4 51% owned by Prodiaman

6 50% owned by Al Rushaid Petroleum Investment Company

7 80% owned by local partner

8 NATCO International payroll company

9 Formerly a Cayman entity; formerly named Cameron Holding (Cayman) Limited

10 50% owned by Abdulla Alsukwaket Trading & Contract

11 49% owned by Argonaut Holdings, LLC (33.24329%), BOKF-CS (Newco Valves), LLC (5.08148%), Steven and Paula Mines 2007 Living Trust (5.39412%), Tulsa-N-Trust (.78111%), Virginia Restovic (2.25%) and Ionel Nechiti (2.25%)

12 8.13% owned by Cameron Energy Services International Inc., 2.62% owned by Cameron Solutions Inc., .38% owned by Cameron Technologies, Inc.

13 1 share owned by Cameron Petroleum Equipment Group, Inc.

14  90% of ordinary shares held by Cameron Lux V SARL; 10% ordinary shares and 100% preference shares held by Cameron Lux APME SARL

15 Cameron Lux II SARL owns 90% and Cameron Lux V SARL owns 10%

16 4.57%by Cameron International Corporation, 4.37% by Cameron Solutions Inc. and 91.06% by Cameron Lux III SARL;

for US tax purposes only 20.24% by Cameron International Corporation, 19.32% by Cameron Solutions Inc. and 60.44% by Cameron Lux III SARL

17 73.6% owned by Cameron International Holding Corp.

18 Joint Venture 51% owned by Mahinda Serviços; in process of changing name to Cameron Systems Angola Ltd.

19 19.9% owned by Cameron Lux V SARL; 80.1% held by Cameron Lux I SARL

20  51% owned by Newmans International Ltd. (Pty B) and 49% owned by Yancheng Shending Valves Co., Ltd (Pty A)

21  30% owned by Newmans International Ltd. and 40% owned by Newmans (Yancheng) Valves Manufacturing Ltd

22  49% owned by Yancheng Fenda Hydraulic Pressure Machinary Co., Ltd. (Pty A) and 25% owned by Yancheng Shending Valves Co., Ltd (Pty B)

23 Natco Canada ULC owns 59,452,742 Class A Preferred Shares