What is the process for requesting a technical drawing or BOM for a custom semi-trailer project from Luyi Vehicle?

Luyi Vehicle ensures road compliance via custom chassis engineering, tare weight control, and certified running gear before fabrication starts.

Engineering controls:

• Parameter audit: Checking destination GVW, axle load caps, and overall dimensions before drawing freeze.
• Chassis adaptation: Setting kingpin offset, axle spacing, and suspension (mechanical, air, or bogie) to prevent axle overload.
• Safety hardware: Equipping dual-line air brakes with WABCO ABS/EBS, homologated lighting, and certified underrun bumpers.
• Load distribution: Calculating payload center of gravity across kingpin and axles to meet legal weight ratios.

Axle ratings, kingpin heights, and brake setups vary by market (to confirm with Luyi Vehicle engineering prior to order confirmation).

A customized semi-trailer lead time depends on scope, not on one fixed figure. Treat the production window as quote-specific and confirm it in writing on the proforma invoice.

Key drivers:

• Drawing freeze: axle rating, suspension type, chassis material and paint system are fixed before steel cutting.
• Customization level: a flatbed with minor changes is faster than a fully bespoke lowbed or tanker.
• Component supply: axles, brakes, landing gear and tyres come from external suppliers.
• Compliance validation: Additional engineering assessment and testing lead time will be needed. Every unit undergoes multi-layered quality inspections before delivery to guarantee consistent performance.
• Quantity and slot: larger batches are split across several production blocks; shipping sits on top.

Exact week counts vary by spec and season (to confirm with LUYI Vehicle sales before deposit).