1 HGT21599-2014垂直吊盖衬不锈钢人孔.pdf
2 HGT21600-2014椭圆快开衬不锈钢人孔.pdf
3 HGT21597-2014回转拱盖快开衬不锈钢人孔.pdf
4 HGT21596-2014回转盖衬不锈钢人孔.pdf
5 HGT21523-2014水平吊盖带颈平焊法兰人孔.pdf
6 HGT21522-2014水平吊盖板式平焊法兰人孔.pdf
7 HGT21604-2014旋柄快开衬不锈钢手孔.pdf
8 HGT21603-2014回转盖快开不锈钢手孔.pdf
9 HGT21602-2014平盖衬不锈钢手孔.pdf
10 HGT21594-2014衬不锈钢人、手孔分类与技术条件.pdf