1)brass bolt and nut use for heating equipment,machine parts hardware 2)produce all kinds of ... goods,plastic goods,molds 1.Name: brass bolt and nut use for heating equipment 2. Material: Bress 3. Craft: die-casting ... 4. Finishing :Anodizing, brushing, sand blasting, shot blasting, milling, polishing powder coating, nickel plating etc. 5. Application : track bolt for heating equipment 6 ...