IS 1978

IS 1978 (管线管)· IS (印度) · 7 种材料

名称 材料组别
YSt 170 Class I 结构钢 chevron_right
YSt 170 Class II 结构钢 chevron_right
YSt 18 结构钢 chevron_right
YSt 21 结构钢 chevron_right
YSt 210 结构钢 chevron_right
YSt 240 结构钢 chevron_right
YSt 25 结构钢 chevron_right