... ! SizeDiameter: 1/2inch to 32inchThickness: sch5 to schxxsSurfacePolished, annealed, pickledTechniqueCold drawn and cold rolledMaterialTP201, TP304, TP304L, TP316L, TP310S, TP321TypeSeamless and weldedEndPlain, beveled ... SizeDiameter: 1/2inch to 32inchThickness: sch5 to schxxsSurfaceGalvanized or coatedTechniqueCold drawn, hot rolled, hot expansionTypeRound pipe and square pipeMaterial20#, 45#, Q235 ...