... " 2. Length: 30mm-3000mm 3. Class: 4.8,5.8,8.8,12.8 1) Standards: B7 B8 B8M DIN 975, DIN 976A, , UNC ROD, BSW ROD2) Size ... " length: 1000-3000mm,3-12 feet3) Material: stainless steel, low carbon steel, carbon steel, alloy steel4) Grade: 4.8,5.8,8,8.8,12.85) Surface ... : Plain, Black, Zinc Cr+3,Yellow Zin c Cr+6, H ...