... black,zinc plated,HDG,etc din975 din976 stainless steel and carbon steel threaded rod threaded rod 1.various kinds ... of thread rod:stainless steel S304,SS316,SS201 ,carbon steel Q235,A3,40Cr,etc4.surface treatment:black,white ... requirement.5.standard: Din,ISO,JIS,ANSI,GB and BS.6.packing of threaded rod:general export packing ... require7.grade:stainless steel A2-70,A4-70,carbon steel 4.6,4.8,8.8,10. ...