... 201,302,304,316 etc 3.B-SPR,D-SPR,CHQ,B&N,ANN.EPQ,NAI ect 4. ... used for rolling various precision springs. Stainless Steel EPQ Wire(EPQ)Steel grade: 304, 316, 304ES, 200CU-3 ... baskets, food and medical machinery accessories, etc. Stainless Steel Nail Wire (NAI) (Application: Kinds of head-shaped, bar- ... Steel grade: 304, 304HC, 304HCT, 304HC3, 316, 201CU Wire size: 0.8-8.0mm Surface: Dull, Bright Temper: ...