QJ 2528.18-1993 Large-scale composite bending mold component thick pad

QJ 2528.1-1993 large-scale combined bending mold component type A rectangular short support QJ 2528.2-1993 Combination bending die element type B long rectangular short support in a large-scale curved assembly QJ 2528.3-1993 large-scale composite bending mold component square short support。 QJ 2528.4-1993 Large-scale composite bending mold component with type C rectangular short support QJ 2528.5-1993 The component of a large composite bending die with type D rectangular short supports QJ 2528.6-1993 Large-scale composite bending mold component E-type rectangular short support QJ 2528.7-1993 Large-scale composite bending mold component type F rectangular short support QJ 2528.8-1993 Large-scale composite bending mold component short support plate QJ 2528.9-1993 large-scale combined bending die component type A rectangular long support bracket QJ 2528.10-1993 Large-scale composite bending mold component type B rectangular long support QJ 2528.11-1993 Large composite bending die component with type C long rectangular long support QJ 2528.12-1993 Large-scale composite bending mold component with type D rectangular long support QJ 2528.13-1993 Large-scale composite bending mold element type E rectangular long support QJ 2528.14-1993 Large-scale composite bending mold component type F rectangular long support QJ 2528.15-1993 Large-scale composite bending mold component G type rectangular long support QJ 2528.16-1993 Large composite bending die component rectangular support element QJ 2528.17-1993 Large-scale composite bending mold component long support plate QJ 2528.19-1993 Large-scale combined bending mold component with thick intermediate plate QJ 2528.20-1993 Large-scale composite bending mold component thin plate

GB/T 3077-1999 Alloy structure steels GB/T 3077-2015 Alloy structure steels QJ 2496-1993 The technical specifications for large-scale composite bending mold components