China Induction Hardening Steel Parts Manufacturers Factory Suppliers
We meet the clear or potential needs of our customers with quality Case Hardening Service, Selective Hardening, Spheroidizing Annealing and in-depth services to achieve maximum customer satisfaction. As a research and development manufacturer of Induction Hardening Steel Parts, our company has been making efforts for product innovation and upgrading. Since the establishment of the company, we have always adhered to the business philosophy of "Technology establishes the enterprise, quality first", takes the customer as the center, takes every detail of R&D and production seriously, ensures the quality of each product, and provides support for global users. Our company values adaptability and agility to respond to changing market dynamics. We believe that we should actively introduce high-level talented people, and that the good use of intellectual capital is the key to corporate success. While creating material wealth, we create spiritual wealth, and we constantly practice the social mission that our company shoulders. According to the characteristics of different categories and levels of talents, the company constantly improves and innovates the talent training mechanism. We sincerely hope we can establish win-win business cooperation with you in the future!
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Induction Hardening
Induction hardening uses electromagnetic induction to heat specific surface areas of a part — with heating times measured in seconds — followed by immediate water or polymer quenching. The rapid...
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Cold Extrusion
Cold extrusion is a precision metal forming process that shapes material by forcing it through or around a die under high pressure at room temperature. Unlike cold heading, which upsets material...
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Internal Spline Broaching
Internal spline broaching is a high-precision machining process that uses a multi-tooth tool — the broach — to cut internal spline profiles in a single pass. Each successive tooth removes a...
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Internal and External Cylindrical Grinding
Cylindrical grinding is a finishing process that uses abrasive wheels to refine external (OD) and internal (ID) surfaces of round components — achieving tighter tolerances and better surface...
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Spheroidizing Annealing
Spheroidizing annealing transforms the lamellar carbide structure in steel into a spheroidal (globular) form through controlled heating and slow cooling. This reduces hardness, improves...
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Carburizing
Carburizing is a thermochemical process that diffuses carbon atoms into the surface layer of low-carbon steels, increasing surface carbon content to approximately 0.8%. After quenching, this...
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Tempering
Tempering is a mandatory post-quenching heat treatment. Fresh martensite is hard but brittle, with high residual stress. Without tempering, a quenched part is prone to cracking or fracture in...
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Shot Blasting
Shot blasting is a mechanical surface preparation process that propels spherical metal shot at high velocity (65–110 m/s) using a centrifugal wheel . The impact of the shot removes mill scale,...
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Cleaning and Rust Prevention
Cleaning and rust prevention removes oils, greases, and cutting fluids from metal surfaces, followed by application of a protective coating to prevent oxidation during storage and transit. The...
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Hot Forging Dies
We design, manufacture, and maintain hot forging dies entirely in-house — from geometry definition and hot-work tool steel selection to heat treatment, surface engineering, and ongoing repair....
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Progressive Stamping Dies
We design, manufacture, and maintain progressive stamping dies entirely in-house — from strip layout and station sequencing to tool steel selection, heat treatment, surface engineering, and...
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Fine Blanking Dies
We design, manufacture, and maintain fine blanking dies entirely in-house — from V-ring geometry and clearance optimization to carbide selection, heat treatment, surface engineering, and ongoing...
The seller has a perfect production and sales system, and to my surprise, their after-sales service is excellent and very patient.
Their installers are very careful, and they even let me check the appearance of the product when they open the box, which is quite attentive.
It is a very pleasant cooperation, and I will have the opportunity to buy from here in the future.
The company's customer service staff can always enthusiastically help us solve all kinds of doubts, no matter how late it is.
I just want to say that the quality of this batch of goods is really good!
Very enthusiastic seller, I will come again next time~The goods are very good!
We will adhere to the business philosophy of honesty and credit first, and return the trust and love of customers and owners from all walks of life with first-class technical level and perfect Engine Vibration Mount, Cold Extruded Split Bushings, Steel Fork for Automotive Chassis. Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the most professional induction hardening steel parts manufacturers and suppliers in China, also supports high quality customized service. With abundant experience, we warmly welcome you to buy durable induction hardening steel parts made in China here from our factory.


















