Assembly Fit
Mounting interfaces, hole positions, flange orientations and clearances.
Компания China Precision Tooling
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» Forming and Bending
Sheet Metal Forming & Bending Services
From Flat Sheet to Parts That Fit Your Assembly.
Custom brackets, chassis, panels and enclosures manufactured to your drawings—with attention to bend accuracy, mounting interfaces and finished-part dimensions.
GPT Precision provides sheet metal forming and bending services for prototypes and batch production. Our 100 t and 160 t press brakes support bend lengths up to 3,000 mm, subject to material, thickness, geometry and tooling requirements.
Samples and inspection reports are submitted for customer approval before batch production begins.
PHOTOGRAPHY TO FOLLOWPress brake / forming operation3:4 · Actual production photograph
Built Around the Finished Part
More Than the Correct Bend Angle
A formed part must fit its assembly, not simply meet an individual bend angle.
Mounting holes need to align, flanges must clear adjacent components, and the finished geometry must support the intended function.
We review material, thickness, bend geometry, tooling access and critical dimensions together to establish a suitable forming approach.
Manufacturing Feasibility
Material condition, bend sequence, tool access and forming requirements.
Dimensional Control
Bend angles, flange heights, critical datums and finished-part dimensions.
Поверхность & Secondary Operations
Tooling marks, visible surfaces, welding, hardware and finishing requirements.
Where a material substitution or design adjustment is recommended, we discuss the proposed change and obtain your approval before proceeding.
PHOTOGRAPHY TO FOLLOWFormed part / assembly interfaces3:4 · Actual production photograph
Forming & Bending Capabilities
Оборудование & Working Range
Our forming equipment supports a range of sheet metal components, from small mounting brackets to larger panels and structural sections.
| Capability | Manufacturing Range |
|---|---|
| Press brake capacity | 100 t and 160 t |
| Maximum bend length | Up to 3,000 mm |
| Aluminum sheet thickness | 1–6 mm |
| Stainless steel thickness | 0.5–3 mm |
| Maximum formed-part dimensions | 1,500 × 800 × 500 mm |
| Inside bend radius options | R2, R3 and R5 mm |
Dimensional Capabilities
| Feature | Tolerance |
|---|---|
| Bend angle | ±0.5° |
| Flange height | ±0.2 mm |
| Formed hole position | ±0.2 mm relative to agreed datums |
| Overall formed dimensions | ±0.5 mm |
Engineering note: These are confirmed manufacturing capabilities. Their applicability to a particular part depends on material grade, temper, thickness, bend length, geometry, tooling and measurement conditions. Maximum capacity values do not necessarily apply simultaneously.
Project-specific manufacturing and inspection requirements are confirmed during drawing review.
Materials for Sheet Metal Forming
Material Selection Affects the Finished Part
Material grade and condition influence bendability, springback, achievable bend radius and surface appearance.
We work with aluminum alloys, stainless steels, carbon steels, copper and brass. The specified material condition is reviewed together with the finished-part geometry.
| Материал | Available Grades | Main Review Points |
|---|---|---|
| Алюминий | 3003, 5052 | Temper, thickness, bend radius and finish |
| Алюминий | 6061 | Temper, bend direction and cracking risk |
| Алюминий | 7075 | Material condition, bendability and geometry |
| Stainless steel | 301 | Temper, springback and dimensional control |
| Stainless steel | 304, 316, 316L | Thickness, bend radius and surface finish |
| Carbon & low-carbon steel | Q235, 1008, SPCC | Material standard, thickness and finishing |
| Медь | C11000 | Temper, electrical requirements and surface protection |
| Латунь | C26000, C26800 | Temper, bend geometry and appearance |
Design Considerations for Formed Parts
Design for Bending, Assembly and Inspection
Good sheet metal design considers how the part will be formed, assembled and measured—not only its flat pattern.
The following references support initial design review. Here, t represents nominal sheet thickness.
| Feature | Initial Design Reference | Review Priority |
|---|---|---|
| Inside bend radius | R ≥ 1t for suitable materials | Сплав, temper, thickness and bend direction |
| Flange length | ≥ 4t as a starting reference | Die opening, radius and tooling access |
| Hole-to-bend clearance | Initially assess ≥ 2t from hole edge to bend tangent | Hole size, bend geometry and distortion |
| Bend relief width | ≥ 1t as a starting reference | Relief depth, location and adjacent features |
These references are not universal minimum requirements. Final dimensions depend on material condition, forming geometry and the selected tooling.
PHOTOGRAPHY TO FOLLOWBend detail / radius and flange3:4 · Actual production photograph
Critical Dimensions & Assembly Interfaces
Identify the datums, mounting holes, locating features, flange heights and clearances that control assembly fit.
Clearly distinguish functionally critical dimensions from features where manufacturing alternatives may be acceptable.
Bend Radius & Springback
Material recovery after bending can affect the final angle and geometry.
We account for springback during forming setup and verify sample dimensions against the agreed drawing requirements. Adjustments are made where needed before samples are submitted for approval.
Flat Patterns & Bend Sequence
Provide the finished-part 3D model and dimensioned drawing. An existing flat pattern can also be included with its revision identified.
Bend allowances and developed dimensions are coordinated with the selected forming process. Short flanges, closely spaced bends and enclosed features are reviewed for tool access and bending sequence.
Secondary Operations & Surface Protection
Welding, inserted hardware, machining and coating can influence final dimensions and appearance.
Identify visible faces, acceptable tooling marks, finishing requirements and surfaces that need protection during manufacturing.
Typical Formed Sheet Metal Parts
PHOTOGRAPHY TO FOLLOWBrackets & Mounting Components3:4 · Actual production photograph
Brackets & Mounting Components
Custom brackets, supports and mounting components with controlled flange orientation, hole positions and assembly clearances.
Key features: Mounting alignment, bend angles and mating interfaces.
PHOTOGRAPHY TO FOLLOWChassis & Enclosures3:4 · Actual production photograph
Chassis & Enclosures
Formed chassis, housings and equipment covers designed around internal components, fastening positions and access requirements.
Key features: Overall dimensions, component clearance and assembly fit.
PHOTOGRAPHY TO FOLLOWPanels & Doors3:4 · Actual production photograph
Panels & Doors
Formed panels, access doors and covers with edge returns, hinge locations and defined visible-surface requirements.
Key features: Edge geometry, hinge alignment and appearance.
PHOTOGRAPHY TO FOLLOWCabinet & Equipment Components4:3 · Actual production photograph
Cabinet & Equipment Components
Cabinet sections, internal supports and equipment panels incorporating mounting features and hardware locations.
Key features: Mating dimensions, hole alignment and consistent assembly geometry.
PHOTOGRAPHY TO FOLLOWFrame & Structural Components4:3 · Actual production photograph
Frame & Structural Components
Bent sections and structural components prepared for subsequent welding, fastening or mechanical assembly.
Key features: Connection geometry, alignment and dimensional consistency.
From Drawing Review to Approved Production
A Defined Process Before Batch Manufacturing
Our forming and bending workflow includes drawing review, sample production, inspection and customer approval before batch production.
Drawing & Engineering Review
We review material specifications, thickness, bend geometry, tooling requirements and critical dimensions.
Manufacturing questions, inspection datums and acceptance criteria are clarified before production planning is finalized.
Sample Production & Inspection
Samples are produced and inspected against the agreed drawings.
Relevant measurements include bend angles, flange heights, hole positions and overall formed dimensions.
Where corrections are required, the forming setup is adjusted and the affected features are rechecked.
Customer Sample Approval
Samples and an inspection report are submitted for customer review.
Required corrections are addressed and verified before approval.
Batch production begins only after customer approval.
Batch Production & Quality Control
Production proceeds using the approved sample, drawing revision and agreed inspection requirements as references.
Dimensional and quality checks are performed according to the project inspection plan to maintain consistency throughout production.
What Affects Forming & Bending Cost?
Pricing Based on the Complete Part Requirements
Forming cost depends on more than bend count. Выбор материала, part size, tooling access, order quantity and secondary operations all influence the manufacturing approach.
| Cost Factor | What We Evaluate |
|---|---|
| Материал & thickness | Класс, condition, stock requirements and forming force |
| Part size & geometry | Handling, tooling access and setup complexity |
| Bend count & sequence | Number of operations and part repositioning |
| Tooling requirements | Standard tooling suitability and additional setup needs |
| Order quantity | Sampling, setup and production volume |
| Secondary operations | Welding, hardware, machining and finishing |
| Inspection | Critical tolerances, verification and documentation |
Include your initial order quantity and expected repeat demand where available.
Часто задаваемые вопросы
What is your maximum bending capacity?
Our press brake equipment includes 100 t and 160 t machines, with bend lengths up to 3,000 mm. Maximum formed-part dimensions are 1,500 × 800 × 500 mm.
The applicable working range depends on material, thickness, geometry and tooling. Maximum values may not be achievable simultaneously.
What bending tolerances can you achieve?
Our capabilities include bend angle tolerances of ±0.5°, flange height tolerances of ±0.2 mm and formed hole-position tolerances of ±0.2 mm relative to agreed datums.
Overall formed dimensions can be controlled to ±0.5 mm, subject to project requirements and manufacturing conditions. Specific tolerances are reviewed against the drawing.
Can you bend 6061 and 7075 Алюминий?
Да. Both alloys are included in our material range.
We review temper, thickness, bend radius and geometry before confirming the forming approach. Certain high-strength conditions may require larger radii or an alternative manufacturing method.
Can you produce parts with specified bend radii?
Да. Available radius options include R2, R3 and R5 mm. Other radii are evaluated based on material thickness, geometry and tooling.
Identify functionally critical radii on your drawing.
What is the minimum flange length?
A flange length of approximately four times the sheet thickness is a useful starting reference.
The actual minimum depends on die opening, bend radius, material and nearby geometry. Shorter flanges require individual review.
Do I need to provide a flat pattern?
№. A finished-part 3D model and dimensioned drawing are sufficient for initial review.
If you have a flat pattern, include it with the revision information. Developed dimensions and bend allowances are coordinated with the agreed forming method.
Will I receive samples and an inspection report?
Да. We provide samples and an inspection report for customer review before batch production.
Production begins after your approval, using the approved sample, drawing revision and agreed inspection requirements as production references.
Can welding, hardware installation and finishing be included?
Да. Welding, hardware installation and finishing can be reviewed as part of the complete manufacturing scope.
Include these requirements in your inquiry so the applicable operations and acceptance criteria can be confirmed during quotation.
Request a Quote for Your Formed Sheet Metal Parts
Share Your Drawings. We'll Review the Manufacturing Requirements.
Whether you need a formed mounting bracket, equipment chassis, enclosure or structural component, start with your finished-part requirements.
Please include:
- 2D drawings and 3D models, with revision information
- Material grade, temper or condition, and sheet thickness
- Prototype or production quantity and expected repeat demand
- Критические размеры, tolerances, datums and assembly interfaces
- Required bend radii and special forming features
- Welding, hardware and surface finishing requirements
- Inspection requirements and requested delivery schedule
Highlight any tight bends, critical hole positions or assembly features that need particular attention.
Our team will review your project requirements, clarify manufacturing questions and confirm the appropriate next steps.
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