... ",4-1/2",5",5-1/2"oil drilling pipe :-Drilling pipe,heavy weight drilling pipe,tubing pipe,casing pipe. We can ... 2,4",4-1/2",5",5-1/2",Steel Grade:E75, X95, G105, S135 Type of end finish ... 139.7mm3) Wall thickness:6.45 to 12.7mm4) Grade:E75,X95,G105,S1355) Length:R1:6.1-7. ... we've been exploring and developing upon producing various oil drilling tools including Drill Pipe, Drill Collar, Heavy Weight Drill ...