GH1140特殊合金GH1140优质合金钢
GH38A进口高温合金GH38A
GH130镍基合金GH130..
GH139镍合金GH139高..
H11390进口铁镍合金H1..
GH1139铁镍合金GH11..
GH1140特殊合金GH11..