HUASHENG PRECISION · Updated September 11, 2026
Automotive Steel RFQ Guide: Grade, Forming and Inspection
Prepare a steel-part enquiry around the drawing specification, sheet condition and final assembly requirements. We review the manufacturing route using the requested material and part geometry.
Comparison and drawing review
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| Requirement | What to specify or discuss |
|---|---|
| Material identification | Exact steel grade, governing specification, coating designation and thickness tolerance. |
| Forming information | Inside bend radius, forming direction, drawn geometry and any restrictions on the blank. |
| Joining and finish | Weld locations, joining process, corrosion protection and masked or functional surfaces. |
| Delivery condition | Finished-part dimensions, inspection documents, packaging and requested shipment date. |
Keep grade and coating requirements together
A steel family label does not replace a full purchase specification. Include mechanical property requirements where applicable, coating and surface condition. Ask for proposed substitutions to be identified before manufacture; nominally similar designations should not be silently treated as interchangeable.
Review bends and formed features before cutting
Use the finished drawing and, if available, the flat pattern together. Confirm which file controls and whether the supplier may adjust the developed blank. For formed parts, radius, thickness, rolling direction and tooling access need to be considered as a set.
Agree the welded or assembled condition
State the condition in which dimensions are accepted: separate parts, a welded assembly or the final coated part. Define fixture references and critical joining interfaces. Distortion and inspection access should be discussed before the manufacturing sequence is fixed.
Document the scope of a prototype order
Identify whether the parts are for fit checks, development tests or another agreed purpose. List required material and inspection documents. A prototype machining or forming order does not automatically include production approval, vehicle qualification or customer-specific quality submissions.
Workshop information
Our company presentation records a 7,000 m² facility in Dongguan, 35 CNC machines and 170 employees. Manufacturing, inspection and any required partner processing are reviewed against the drawing and order requirements.
If a certification or specific document is required, identify its scope before quotation.
Company and equipment informationShipping method, freight, duties, taxes and customs arrangements are confirmed by email for each order, based on the destination and order details.