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China Case Hardening Service Manufacturers Factory Suppliers

With the aggressive spirit, strict management, excellent Spheroidizing Annealing, Induction Heat Treatment, Selective Hardening and the support of our customers, our scale is growing day by day. We firmly believe that with our high-quality and low-cost Case Hardening Service, enthusiastic service attitude and perfect after-sales service, we will gain the trust of customers. We have top engineers in these industries and an efficient team in the research. We have a proven track record of success and growth. Facing the complex and changing market situation, we firmly establish the scientific concept that management innovation is the key to improve the core competitiveness of enterprises. Our team has a high degree of cohesion, progressive business philosophy, innovative spirit, outstanding talent and high dedication. We continuously improve the system and system according to the operation condition and environmental changes of the enterprise, and ensure the applicability and efficiency of the system and system. We offer comprehensive after-sales service and support.
Carburizing
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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...
Cold Extrusion
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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...
Bending and Forming
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Bending and Forming

Bending and forming is a sheet metal fabrication process that uses press brakes and specialized tooling to create angled, channeled, and contoured profiles from flat sheet stock. Unlike stamping —...
Deep Drawing
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Deep Drawing

Deep draw stamping is a metal forming process that transforms flat sheet metal or tubular blanks into seamless, hollow components where the depth typically exceeds the diameter. The process uses a...
CNC Turning
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CNC Turning

CNC turning produces cylindrical components with ±0.02mm accuracy — from Φ2mm pins to Φ500mm shafts, up to 1000mm in length. We machine stainless steel, carbon steel, alloy steel, aluminum, and...
Surface Grinding
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Surface Grinding

Surface grinding uses a rotating abrasive wheel to produce flat surfaces with high dimensional accuracy and fine finish — removing oxide layers, correcting distortion, and preparing parts for...
Spheroidizing Annealing
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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...
Induction Hardening
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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...
Tempering
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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...
Shot Blasting
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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,...
Sand Blasting
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Sand Blasting

Sandblasting is an abrasive blasting process that propels sand or other abrasive media against a surface under high pressure, typically using compressed air . The process removes surface...
Cold Extrusion Dies
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Cold Extrusion Dies

We design, manufacture, and maintain cold extrusion dies entirely in-house — from geometry definition to carbide selection, heat treatment, surface coating, and ongoing repair. This vertical...
Diane Thompson star star star star star
Our customers are very satisfied with your products and thank you for giving us a perfect shopping experience.
Joseph Cleveland star star star star star
This trustworthy supplier has high-quality products and services.
Helen Smith star star star star star
This supplier gave quick feedback and answers to our questions and concerns, and we are very happy to work with such a cohesive team.
Joyce Coston star star star star star
This time we bought a batch of customized products. The merchants are very good at communication, and the products are produced according to our requirements.
Donald Ruiz star star star star star
The product is really great! Not only the packaging is sturdy, but the appearance is also complete, there is no scratches or damage, and it is very easy to use, it is exactly the same as the
Brett Hatcher star star star star star
This product is of good quality, bright in color and durable. Hope they keep it up and do more activities.
We strive to produce superior Closed Die Forging, Precision Laser Cutting with reliable quality that consumers and we expect together, and shape our good brand image. Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the most professional case hardening service manufacturers and suppliers in China, also supports high quality customized service. With abundant experience, we warmly welcome you to buy durable case hardening service made in China here from our factory.

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