Black Oxide
Cost-effective, suitable for general anti-rust requirements under normal working conditions.
Loading precision components
From raw steel coil to finished washer — discover how HUAMAO JINGGU Metal Technology combines ten years of stamping expertise, in-house material processing and strict quality control to serve customers at home and abroad.
Annual Production
Years of Experience
Production Process Steps
On-Time Delivery
These advantages form our technical barriers — ensuring we keep delivering products that exceed customer expectations.
Control quality and cost from the source, achieving independent control of the entire process.
Efficient parallel production of large and small washers, greatly increasing production capacity.
Ensure a stable supply of raw materials, unaffected by external market fluctuations.
Multiple quality inspection processes from raw materials to finished products ensure zero defects.
Flexibly customize various non-standard products according to specific customer needs.
No middlemen — providing the most competitive prices with fast, reliable delivery.
Every step from raw material procurement to finished product inspection is standardized, automated and strictly controlled.
Select high-quality steel and strictly control source quality to ensure material reliability.
Use high-precision equipment to process coils into flat sheets with uniform thickness.
Precisely cut according to orders to ensure dimensional accuracy and minimize material waste.
Efficiently complete the forming of washers through fully automated production lines.
Perform black oxide, galvanizing and other finishes according to customer requirements for corrosion resistance.
Implement a full inspection process to ensure all products meet strict quality standards.
Quality starts with the material. We carefully select Q235B carbon steel and offer finishes to match every working environment.
Cost-effective, suitable for general anti-rust requirements under normal working conditions.
Provides enhanced anti-rust performance with a bright, aesthetically pleasing finish.
Excellent mechanical properties and stable hardness — the best balance between strength and cost efficiency. Stainless steel, copper and other materials available on request.