fuli (2)in #steel • 9 months agoRE: Comprehensive Overview of 4140 Steel HardnessYou've got a free upvote from witness fuli. Peace & Love!steem.history (78)in #steel • last yearRE: 1.2312 Steel: Prehardened Mold Steel You Need to KnowHello welcome to Steemit world! I'm @steem.history, who is steem witness. This is a recommended post for you.…