... to schxxsSurfacePolished, annealed, pickledTechniqueCold drawn and cold rolledMaterialTP201,TP304,TP304L,TP316L,TP310S,TP321TypeSeamless and weldedEndPlain, beveled, with end cap ... or coatedTechniqueCold drawn, hot rolled, hot expansionTypeRound pipe and square pipeMaterial20#, 45#,Q235,20G,A106B,A53B,AISI ... you the whole day Wuhan Maike Electrical Material and Project Equipment Co. LTD.TEL:+86-27- ...