ASTM A335 P91 لوله فولادی بدون درز جوش داده شده
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. Form Round, Square, Rectangular, Hydraulic Etc. Standard ASTM A335 …