ASTM A335 P91 لوله فولادی بدون درز جوش داده شده
سه راهی لوله فولادی. ASTM A335 P91 Seamless Welded Steel Pipe ASTM A335 P91 Specification Specialized in Large Diameter Size Outer Dimensions 19.05mm – 114.3mm Wall Thickness 2.0mm – 14 mm Length max 16000mm Schedule Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.