... thickness:1-12.7mm monel400 alloy seamless steel pipes1.mainly products are steel pipes and tubes 2.steel grade:austenitic ,duplex ... outside diameter of steel pipes and tubes : 6mm-323.85mm2.wall thickness of seamless steel pipes and tubes : 1mm-12.7mm3.steel pipes ... S31803,S32205 ,S32507 ,S32750 ,254SMO,904L8.high heat alloy seamless steel pipes and tubes : monel 400,inconel 600,601 ,625,718 ,incoloy ...