Product name Seamless Steel Pipe (SMLS) Out Diameter 10.3mm-762mm, 1/2”-30” ... , newly produced, secondary , stock etc. Certificate API 5L,etc End Plain end, beveled, cut square, grooved, threaded and coupling, etc. Surface Bare ... as casing and tubing for wells, screwed and socketed steel tubes and tubular and for plain end steel tubes - used for the conveyance of fluids as well ...