Min. Order Reference FOB Price
1,000 Pieces US$0.175 / Piece
Product Description
Product Description Different of BB4 and BB5 grade of rebar coupler 1.BB4 couplers are generally used for Grade III rebars (such as the HRB400 series). BB5 couplers are typically used for Grade IV rebars (such as the HRB500 series). 2.Since Grade IV rebars (HRB500) have higher tensile strength, the ...