Coaster-Style Driver Door Frame (Right-Hand Drive)

The Jingma Coaster-Style Driver Door Frame (Right-Hand Drive) is a precision-engineered structural exterior component designed for Coaster-type and mid-size passenger buses. Produced from high-quality cold-rolled steel sheets, this door frame meets industry standards and customer requirements for strength, durability, and dimensional accuracy.

The inner panel, outer panel, and reinforcement components are formed through dedicated stamping molds and further processed using 3D laser cutting based on detailed technical drawings. These components are then integrally welded into a complete frame structure, ensuring excellent rigidity, precise fitment, and long-term reliability under various operating conditions.

Product Features

• Robust Structural Design:
  The door frame is constructed by welding inner and outer panels together with reinforcement parts, providing excellent load-bearing capacity and structural stability.

• Enhanced Anti-Corrosion Performance:
  Both internal and external surfaces are treated with an electrophoretic coating. The product successfully passes over 72 hours of salt spray testing, significantly improving resistance to rust and corrosion while ensuring strong adhesion for subsequent paint finishing.

• High-Precision Manufacturing:
  Mold stamping combined with 3D laser cutting ensures accurate dimensions, smooth edges, and consistent quality, allowing seamless integration with vehicle bodies.

Quality Standards

• Key Process Capability Index: Stable and controlled

• Customer Satisfaction Rate: ≥ 95%, with an annual increase of 1%

• Process Audit Level: Grade B

• Inspection Pass Rate: ≥ 98% per batch

These standards ensure product reliability, consistency, and long service life.

Application Range

This driver door frame is suitable for Jiangling Jingma Coaster bus models with the following lengths:

• 6.0 meters

• 7.1 meters

• 7.7 meters

It is widely used in city transit buses, tourist coaches, and school bus manufacturing and replacement applications.

Notes & Handling Instructions

• Customers should confirm the product condition before shipment.

• Avoid heavy pressure during transportation to prevent deformation.

• Ensure firm and secure packaging for safe delivery.

Competitive Advantages

• Manufacturer Direct Supply: True factory pricing with no intermediaries

• Stable Long-Term Cooperation: Partnerships with leading domestic bus manufacturers such as Xiamen King Long, Ankai Bus, and Jiangling Jingma

• Quality & Delivery Assurance: Mature production management ensures stable quality and on-time delivery

Conclusion

The Jingma Coaster-Style Driver Door Frame (Right-Hand Drive) delivers a reliable and cost-effective solution for bus manufacturers and aftermarket customers. With cold-rolled steel construction, advanced electrophoretic anti-corrosion treatment, and strict quality control systems, the product ensures excellent structural strength, corrosion resistance, and installation accuracy. Supported by factory-direct supply and proven cooperation with major bus brands, it is an ideal choice for high-quality Coaster bus body frame components.