Namdaran Petrogas Industries offers several types of stone traps for oil and gas industry, according to international codes. The service is to trap the solid parts, running into the media coming from the wells. Materials are selected to withstand the severe corrosion and erosion the reduction of wall thickness, the internal surface of the trap is often hardened by a weld overlay clad like nickel, cobalt and other alloys. Traps are equipped by a closure or a flanged connection to remove the separated grits and sand.