三、不锈钢管、不锈钢棒材、不锈钢板材系列.
结构用不锈钢管（GB/T14975），流体用不锈钢管(GB/T14975)等
不锈钢无缝管材质有;201,202,301,310,310S,304,304L,316,316L,321,439,436,437..
不锈钢棒材材质有;201,202,301,310S,321,304,304L,316,316L,321,1Cr13,2Cr13,3Cr13
4Cr13….