... A 53 GR.B,Steel Grade: SA53B and speciation O.D:1/2"-28",21.34 -711.2mm W. ... A 106 GR.B,Steel Grade: SA106B and speciation O.D:1/2"-28",21.34 -711.2mm W ... st37,st42,st52,st35.8-st45.8/1, speciation O.D: 1/2"-28",21.34-711.2mm W. ... Grade :A,B,X42,X46,X52 (PSL1)and speciation O.D: 2"-28",60.3-711.2mm W.T: ... SCH10S- SCH120;5.Casing Pipe: API SPEC 5CTSteel Grade: J.K.N.L.P(PSL1) Threads: STC ,LC, BC and ...