... material:10# 20# 40# 45# etc seamless pipe ProductionCarbon seamless steel pipeBrandzhcxSpecification10.29mm-508mm (1/8''-20'')× 1.2mm ... of OriginTianjin, ChinaModel Number10.29mm-1016mm (1/8''-40'')× 1.2mm-39mmTechniqueSeamless, weldedUsage1. Low and middle ... StandardSteel GradeStandardseamless steel tubesand pipesfor structural purposeGB/T8162-199910, 20, 35, 45, 40Mn2, 45Mn2, 27SiMn, 20Cr, 40Cr ...