Nanjing hengjie steel industrial Co., Ltd is a joint-stock company. The company focuses on providing high value-added spring steel products at the beginning of establishment, and creates more value for users. We take "quality first" as company marketing ways, "create future, Insist perfection and particularity" as operation principle. Nowadays, we own many senior engineers with more than 15 years experience, 3 intensive processing of advanced production lines, full sets of testing equipment.
From Hot rolled→ annealed→ cold rolled(cold drawn, peeled) → heat treatment(oil quenched, lead quenched) → shipment. Each process has been strictly tested through machine and technician, to ensure that the products qualified rate to reach 98.5% or more, strive to achieve 0 defects.
At present, our spring products include: oil quenched steel wire(FDCrSi,FDCrV,VDCrSi,VDCrV, TDCrV,etc); cold drawn round steel bar(SAE9254,SUP12V,55CR3,55CRSi,60Si2CrVA,SUP6,SUP7,SUP9,etc); peeled round bar(55Cr3, SAE9254, SUP12V, 55CrSi, 60Si2CrVA, SUP6, SUP7, SUP9, etc.); cold drawn square steel; taper spring bar; cold rolled spring strip steel(65Mn, 60Si2Mn, 55CrMnA, 50CrV, SUP6, SUP7, SAE5160, etc); hot rolled wire rod; hot rolled round bar; hot rolled spring flat steel(SUP9, SUP6, SUP7, SAE5160H, SAE6150, etc).
Meanwhile, except main spring steel products,we have developed free cutting steel products, from hot rolled to cold drawn, including cold drawn hexagons,cold drawn round steel, cold drawn square steel, cold drawn irregular steel. The size is 2mm-130mm, and steel grade is C1118, 12L14, 1215, Y15Pb, Y40Mn, Y45Pb, S45CF, S45CL, Y15, Y35, SUM24L, SUM42, 11SMnPb and so on.
In order to further satisfy the needs of customers, we independently research and develop the irregular steel products which are widely used in various kinds of mechanical equipment.