API pipe/oil casing pipe/oil pipe/casing pipe/octg pipe/ petroleum casing pipe/ api casing pipe 
Standard : API 5CT . 
Steel Grade : J55 , K55 , N80 , L80 , P110. 
Size : O.D: 2-3/8 " - 20" W.T: 4# - 133# 
Length : R1 - R3 
all the pipes are used in Oil Plant , Water , Oil transprotation , and Industrial Gas