National standards

1- Saudi standard.
2- ARAMCO standard codes.
3- Ministry of defense & aviation code. 4- Royal commission standard.
5- Civil Aviation standard.

International standards

1- SMACNA – Sheet metal and air conditional contracting national association.

3-  ASTM – American society for testing and material.

4-  DIN – Deutsches institute for normung e.v.

5-  NEMA – National electrical manufacturers association.

6-  ANSI – American national standards institute.

7-  NEC – National electrical code.

8-  IEC – international electrical commission.

9-  IEEE – institute of electrical commission.

10-  EMC – electro-Magnetic compatibility association.

11-  UL – underwriters laboratories

12-  OSHA – occupational safety and health act.