We are special Manufacturer is specialized in High strength stud bolt&thread rod more than 10years, such as B7, B7M, L7, B8 and so on. 
1). Standard No: ASTM A193-B7/B7M threaded rod stud bolt 
A320-L7/L7M thread rod stud bolt 
ASTM A193-B8/B8M threaded rod stud bolt 
2). Grade: Gr. B7/B7M, B8/B8M, B16 
3). Size: 3/8"-4", M10-100 
4). Material: Alloy steel, stainless steel, brass, etc. 
5). Surface: Plain&Oiled, Black, ZP, ZY, H. D. G., Teflons Coated etc