... ,carbon steel pipe welded pipe galvanized pipe, seamless steel pipe spiral steel pipe alloy pipe Typecarbon steel pipe welded pipe galvanized pipe, seamless steel pipe spiral steel pipe ... development, etcOD ToleranceD<48.3mm,+-0.4mm/-0.79mm,D48.3-114.3mm,+-0.79%,D>114.3mm +-1.59/-0 ... is long, high security, highly pressurized, widely usedMin order3 tons galvanized steel pipe