Detailed Product Description Our galvanized and hot dipped galvanized roofing nails have smooth shank and twisted shank. Our factory is the leading manufactuer and exporter of all kinds of galvanized. roofing nails, including twisted shank, annular shank, plain shank. The head also have umbrella head, bell head, large flat head etcWe produce all kinds of size, certainly, we can produce by your ...