| Message: | 40Cr meteria 12.9 grade excavator and bulldozer track bolt& nut, segment bolt & nut, plow bolt and nutThemechanical grade is 12.9, case hardening is HRC 38-42, Material is 40CR,and the surface is treated with bluing, screw thread has two type description, one is the metric system:M12-M24-6g, another is denominator system:1/2-1/4--2A.the specification can be customized Application:Nut/BoltPrice:FOB Xiamen,ChinaMOQ:3000PCSDelivery Time:Within 30 Days After ContractedMaterial:40CrTechnique:Heat Treatment,Bluing,Hot ForgingGrade:10.9 or 12.9Surface Hardness:HRC38-43Certification:ISO9001:2000Products show:3.Advantages / Features:1). Materials:Our company has purchased steel from several large steel groups , such as Hangzhou Steel Mill, Shanghai Bashan Steel Mill, Beijing Shrugging Steel Mill whose steel have good mechanical properties and stability of chemical component. it keep the bolt to be of high strength2). Manufacture ProcessionFirst, we have our own High-precision Digital Machining center for mould making in special Mould Workshop, excellent mould make product beautiful appearance and its size accurately.The second, we adopt blasting procession, removing Oxidation surface , make the surface to be bright and clean and uniform and beautiful.The third, in heat treatment: We use the Controlled-atmosphere Automatic heat treatment Furnace, we also have four mesh belt convey furnaces, Can deal with the products in different sizes keeping the non-oxidation surface3). The all process quality control:The quality control is strictly performed from buying raw materials in warehouse to different machining procession and to final packing. We have Magnetic Powder Detector, Material Testing Machine, Metallographic Microscope, such testing instruments, guarantee product high quality and beautiful appearance.4). Our production capacitySingle bolts, every month can produce 1.7 million bolts. Now we buy a Full Automatic Cool-forging Machine. this greatly enhances our production capacity w......url:http://www.mining-parts.net |
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