Sheet Metal Welding Services for OEM Programs
SR MFG provides sheet metal welding services for OEM programs, combining robotic welding, manual welding, fixture control, and in-process inspection to keep weld strength, appearance, and dimensions stable.
Our welding operations are integrated with laser cutting, bending, surface finishing, and final assembly, helping customers reduce rework, simplify supplier coordination, and support stable production from prototype to batch manufacturing.
SR MFG’s Precision Laser Cutting Capabilities
SR MFG provides professional welding services for sheet metal structures andenclosures. We use MIG, TIG, resistance, spot, and stud welding processes todeliver strong, clean, and consistent welds. Our engineering team selects themost suitable method based on part design and assembly requirements toimprove structural strength and reduce total cost.
Multiple Welding Processes
MIG, TIG, resistance, spot, and stud welding to meet different application needs.
Robotic & Manual Welding
Robotic welding supports repeatable parts, while manual welding handles complex structures and tight areas.
Weld Quality Assurance
Work instructions, parameter control, and inspection help maintain stable welding quality in production.
Integrated Assembly Support
Welding works with bending, finishing, and assembly to reduce rework and shorten lead time.
Welding Types
Sheet Metal Welding ProcessOptions
SR MFG supports TIG, MIG / CO2, laser welding, and spot welding for different materials,
part structures, appearance requirements, and production volumes.
TIG Welding
Clean and precise welding for stainless steel, aluminum, and thin sheet metal. Ideal for appearance-critical components.
MIG / CO2 Welding
Efficient welding for carbon steel frames, cabinets, brackets, and structural assemblies. Suitable for batch production.
Laser Welding
Low-distortion welding for precision housings, battery boxes, and thin sheet assemblies with narrow weld seams.
Spot / Projection Welding
Fast joining for overlapping sheet metal parts, stiffeners, tabs, and brackets in high-efficiency production.
Not sure which welding process fits your part? Send your drawings and our engineers will recommend the right method.
Sheet Metal Welding
Tolerances & Inspection Standards
SR MFG references ISO 13920:2023 and applies internal inspection controls for welded sheet metal parts. Tolerances are evaluated based on part size, welding method, fixture design, material thickness, and final assembly requirements.
+ SR MFG Internal Process Control
linear tolerance ≤ 1 m
for parts ≤ 1 m
control target
control range
| Tolerance Category | Parameter | Automated Welding | Manual Welding | Inspection Tools | Applicable Process / Equipment |
|---|---|---|---|---|---|
|
Linear Dimensions |
Length/Width (≤ 1 m) | ±0.8 mm | ±1.5 mm | Laser length measuring device / vernier caliper | Robotic welding / CO₂ welding (FANUC robot / Fenghuo welder) |
| Length/Width (1–3 m) | ±1.2 mm | ±2.5 mm | Steel tape measure + feeler gauges | Laser welding platform / Hanwang welder | |
|
Angular Tolerance |
Short side ≤ 500 mm | ±15′ (0.25°) | ±30′ (0.5°) | Universal bevel protractor | Automated fixturing system / general-purpose welding machine |
| Short side 500–1000 mm | ±20′ (0.33°) | ±45′ (0.75°) | Angle gauge | Positioner / Jasicfeng welder | |
|
Form Tolerance |
Flatness (per meter) | ≤ 1 mm | ≤ 2 mm | Optical level | Robotic welding workstation |
| Straightness (per meter) | ≤ 0.8 mm | ≤ 1.5 mm | Tensioned wire + dial indicator | Manual welding platform | |
|
Positional Tolerance |
Parallelism | ≤ 1 mm/m | ≤ 2 mm/m | Granite surface plate + dial test indicator | Laser tracking system |
| Perpendicularity | ≤ 1 mm/m | ≤ 2 mm/m | Try square + feeler gauges | Welding fixtures and tooling | |
|
Weld Quality |
Reinforcement (butt joint) | 0–1.2 mm | 0–1.5 mm | Weld gauge | All welding equipment |
| Reinforcement (fillet joint) | 0–1.5 mm | 0–2.0 mm | Weld gauge | All welding equipment | |
| Undercut depth | ≤ 0.2 mm | ≤ 0.5 mm | Depth caliper | All welding equipment | |
| Porosity allowance | None (critical welds) | ≤ 1 pore per 100 mm (Ø ≤ 0.5 mm) |
X-ray radiographic testing / dye penetrant inspection | All welding equipment |
Industries & Metal Welding Applications
SR MFG provides metal welding services for sheet metal parts and fabricated assemblies used in data center equipment, consumer electronics, electrical systems, industrial equipment, new energy systems, and outdoor products. Metal welding helps join cut, bent, formed, or machined metal parts into stronger structures, enclosures, frames, brackets, and functional assemblies.
We support both prototype validation and stable batch production for welded metal parts that require structural strength, accurate alignment, clean weld appearance, controlled distortion, and reliable assembly performance.
