... less than 100MM)• We have individual heat treat workshop, have good controlling ability for heat treatment• Most ... one is heat treatment workshop, the third one is machining workshop• Price• Country of Origin• Quality Approvals• Form E/ ... than 2 complaint cases . 2, material of steel type of 15#,20#,25#,30#.35#,40#,45 ... on giving materials. 5, excellent heat treatment. High quality steel rail wheel