... so on ASTM A106 GR B Seamless Steel Pipe Seamless Steel Pipe/ Insulating pipeO.DO.D toleranceW.TThickness Tolerance16--830MM ... steel pipe,piling tube,alloy pipe,welded steel pipe,stainless steel pipe,fluid steel pipe,boiler tube,oil casing pipe,construction tube,octg pipe International ... protect both ends and plastic bag wrapped outside the pipe,then bundles to be covered by polythene& strapped ...