Structural Bolts and Nuts are available in different Grades like ISO 8.8, 10.9, 12.9 ASTM A307, F3125/A325M, A490M, A193 B7/L7 , B7M/L7M,B16, EN 14399-PART 3 & 4, SAE Gr. 5 & 8, DIN, BS & ASTM Standards.
Stud Bolts are used in high pressure bolting situations for pipeline, drilling, petroleum / petrochemical refining and general industry for sealing and flange connections all thread, tap end and double end stud bolts are the lion’s share of the industry.