Jingma Coaster-Style OEM Passenger Door Frame

The Jingma Coaster-Style OEM Passenger Door Frame is a high-precision structural component designed for Jingma Coaster and similar passenger bus models. Our company specializes in manufacturing exterior body panels and structural covering parts for Coaster buses, passenger coaches, tourist buses, and school buses. All products comply with relevant industry standards and customer-specific technical requirements.

The door frame is manufactured from cold-rolled steel sheet. Both the inner and outer panels are formed using precision stamping molds, while 3D laser cutting is applied strictly according to engineering drawings to ensure accurate dimensions and perfect fitment. The inner panel, outer panel, and reinforcement components are integrally welded, providing excellent rigidity, dimensional stability, and long-term structural strength for frequent door operation.

Product Features

• Electrophoretic Coating Process
  Both the internal and external surfaces are treated with electrophoretic coating. The product passes salt spray testing for more than 72 hours, significantly enhancing corrosion resistance and rust prevention.

• Reliable Structural Strength
  Precision stamping, laser cutting, and integrated welding of reinforcement parts ensure the door frame maintains excellent strength, alignment accuracy, and durability during long-term vehicle operation.

• Superior Surface Protection
  The uniform e-coating layer provides effective protection for the steel substrate and offers an ideal base for subsequent painting processes, ensuring long-lasting appearance quality.

Quality Standards

• Key Process Capability Index: Stable and under control

• Customer Satisfaction Rate: ≥95% (annual growth of 1%)

• Process Audit Level: Grade B

• Audit Pass Rate per Inspection: ≥98%

Application Range

• Suitable for Jiangling Jingma Coaster models

• Applicable vehicle lengths:

  • 6.0 m

  • 7.1 m

  • 7.7 m

Widely used in OEM manufacturing, body repair, refurbishment, and aftermarket replacement of passenger doors.

Notes & Handling Instructions

• Customers should confirm product condition before shipment.

• Avoid heavy pressure during transportation.

• Packaging must be firm, stable, and secure to ensure safe delivery.

Competitive Advantages

• Direct Manufacturer Supply: Factory-direct pricing with no intermediaries.

• Stable Quality & Reliable Delivery: Long-term cooperation with well-known bus manufacturers such as Xiamen King Long, Ankai Bus, and Jiangling Jingma.

• Strong Manufacturing Capability: Mature production processes combined with strict quality management systems ensure consistent product performance.

Conclusion

The Jingma Coaster-Style OEM Passenger Door Frame offers high dimensional accuracy, excellent corrosion resistance, and robust structural performance. With factory-direct supply, proven manufacturing expertise, and reliable quality control, it is an ideal choice for bus manufacturers, maintenance companies, and vehicle refurbishment projects.