Description 1. Model no.: a307 gradea 2. Raw material: carbon steel, q235 3. Grade: 4.8 4. Standard: ansi 5. Diameter: 3/4" 6. Length: up to 32" 7. Type: round head 8. Head style: round 9. Finish: hot galvanizing 10. Surface treatment: 3cr+ zinc plated, h.D.G. 11. Application: environmental 12. Connection: common bolt 13. Trademark: sd 14. Hs code: 731815909 15. Origin: ningbo, china Competitive advantages 1. Top quality control 2. Competitive price 3. Various of design 4. Oem accepted 5. Customer's design and logo are welcome