1 HGT21522-2014水平吊盖板式平焊法兰人孔.pdf
2 HGT21519-2014垂直吊盖板式平焊法兰人孔.pdf
3 HGT21518-2014回转盖带颈对焊法兰人孔.pdf
4 HGT21517-2014回转盖带颈平焊法兰人孔.pdf
5 HGT21597-2014回转拱盖快开衬不锈钢人孔.pdf
6 HGT21596-2014回转盖衬不锈钢人孔.pdf
7 HGT21532-2014回转盖带颈对焊法兰手孔.pdf
8 HGT21529-2014板式平焊法兰手孔.pdf
9 HGT21527-2014回转拱盖快开人孔.pdf
10 HGT21526-2014椭圆形回转盖快开人孔.pdf