... Size:From 1/2" to 100" 3.Mill Test Certificate:EN10204/3.1B Seamless steel pipe,seamless steel tube, ... X42, X52, GR. B, ST37, ST44, ST52 etc.3) Size: From 1/2" to 100",4) Wall Thickness: ... 1) Packing in bundles, 2) Surface: Varnish coating 3) Ends: Beveled or square cut, Plastic capped. 4) ... API, ASTM, DIN etc. 2) Mill Test Certificate: EN10204/3.1B 3) Third party inspection: SGS, BV, Lloyds etc. Carbon ...