This cast alloy article is chiefly characterized by having {HEAD ~ coarse and irregular surface contour} of interspersed peaks, valleys and pores that provide for increased surface area for {TAIL ~ increased fluid contact} and provide for increased turbulence in fluid flow 
This cast alloy article is chiefly characterized by having { HEAD ~ coarse and irregular surface contour } of interspersed peaks , valleys and pores that provide for increased surface area for { TAIL ~ increased fluid contact } and provide for increased turbulence in fluid flow
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH