... pipe for general use: ASTM A 53 GR.B,Steel Grade: SA53B and speciation O.D:1/2"-28",21.34 -711 ... steel pipe for high temperature:ASTM A 106 GR.B,Steel Grade: SA106B and speciation O.D:1/2"-28",21.34 ... ;4.line Pipe: API SPEC 5LSteel Grade :A,B,X42,X46,X52 (PSL1)and speciation O.D: 2"-28",60.3-711 ... : J.K.N.L.P(PSL1) Threads: STC ,LC, BC and speciation: 5"-13-3/8",127-339.7mm;We would ...