Use the SVEX-M1 stainless steel camera housing mounting bracket to wall mount your explosion proof camera to just about any surface that will securely hold screws for the mount. It is rated for holding up to 50 KG (approximately 110 pounds).  This is just one of several different camera mounts available from Security Camera King.

Actually, Security Camera King offers several different types of camera housing mounting brackets including two more for explosion proof cameras.  The first is product# SVEX-M15 which is a heavy duty stainless steel surveillance camera wall mounting bracket.  This stainless steel wall mounting bracket is solid steel and weighs 3 KG (about 6.6 pounds) and can support a load of up to 100 Kg (approximately 220 pounds)!