Sigma Industrial Services is made up of industry professionals with technical
expertise who work closely with you to identify and solve your  challenges.

Mr. J.S. Mokalane

Chief Executive Officer

Jack Setlhare Mokalane (ZA-IWT-00054)

Mr. J.S. Mokalane is an open minded and eager to learn Metallurgist with a BSc (Hons): Metallurgy from University of Pretoria. He is also a qualified International Welding Technologist (ZA-IIW-00054) and hold an Executive Development Program certificate from Wits Business School. He intends to acquire Master of Business Leadership with GIBS business School in the near future. He has been in the industry since 2007 and has been exposed to diverse Non Destructive Testing, Metallurgical and Welding Techniques. Contact Details:
+27 (0)73 981 5023 :


Mr. J.E. Malefane

Chief Operations officer

(UT/PA PCN 313005)

Mr. J.E. Malefane is a young and dynamic Technician with a Diploma: NDT from Vaal University of Technology, PCN Level II in both Ultrasonic Testing and Phased Arrayed, and ASNT Level II inMagnetic Particle Testing. He is currently busy with his Level III. He has been in the industry since 1994 through the ranks as a Learner Technician, Technician and Snr. Technician. His experience covers Ultrasonic Test, Phased Array, Magnetic Particle Inspection, Penetrant Test, Corrosion Mapping, TOFD, Replica, and Welding Contact Details:
+27 (0)72 765 9149 :

Mr. G.K. Kumah

OO: Technical


Mr. G.K. Kumah is a seasoned and knowledgeable Non Destructive Testing Technician with Advanced Welding and Fabrication from City and Guilds, SAQCC Level II in Radiographic Testing, Magnetic Particle Testing and Dye Penetrant Testing. He has been in the industry since 2010 and has acquired a comprehensive experience in the field of Non Destructive Testing. Contact Details:
+27 (0)72 025 8851 :