Welding & Metal Joining Services
Sango provides high-precision welding and fabrication services certified to AWS D1.1, D1.2, D1.6, and ISO 3834 standards. From cosmetic grain-matched stainless steel welds to high-strength robotic MIG frames and zero-distortion handheld laser welding, we deliver defect-free structural joints.
Advanced Process Capabilities & Technologies
State-of-the-art multi-axis CNC machines, laser cutters, and metrology labs engineered for zero-defect production.
Precision TIG (GTAW) Welding
High-precision manual and orbital TIG welding for clean, aesthetically pleasing, spatter-free joints in stainless steel, aluminum, and titanium.
Fiber Laser Seam Welding
High-speed handheld and robotic fiber laser welding producing narrow, deep penetration seams with up to 80% less heat input than arc welding.
Spot Resistance Welding & Stud Welding
Fast, economical lap-joint welding for sheet metal brackets, stiffener ribs, and capacitor-discharge threaded weld studs.
CNC Milling Solutions for Every Industry
Sango provides CNC milling services for a wide range of industries, helping customers manufacture precision components from prototype to production.
Our engineering team understands the unique requirements of different applications—from lightweight aerospace structures and medical devices to automotive systems and industrial equipment—and recommends machining solutions that balance performance, manufacturability, and cost.
Technical Specifications & Tolerances
| Welding Certifications | AWS D1.1 (Structural Steel), AWS D1.2 (Structural Aluminum), AWS D1.6 (Stainless Steel), ASME Section IX |
| Non-Destructive Testing (NDT) | Dye Penetrant Inspection (PT), Hydrostatic Pressure Testing, Helium Leak Testing, Ultrasonic (UT) |
| Post-Weld Finishing | Weld seam grinding flush, pickling & passivation, vibratory stress relief, bead blasting |
Material Options for CNC Milling
Extensive selection of engineering metals and plastics stocked and machined by Sango Machining.
Aluminum Alloys
A wide range of aluminum alloys to meet different application requirements. 5052-H32 offers excellent corrosion resistance, 6061-T6 provides high strength and machinability, while 1100 and 3003 are ideal for parts requiring superior formability and lightweight performance.
Surface Finishes for CNC Milled Parts
Surface treatment and post-machining options available at Sango Machining to achieve cosmetic and functional standards.
As-Milled
Standard machined surface finish with minor tool marks (Ra 1.6–3.2 µm).
Bead Blasting
Uniform satin or matte texture removing tool marks and imperfections.
Anodizing (Type II & Type III Hardcoat)
Type II anodizing & Type III Hardcoat for maximum wear/corrosion resistance.
Powder Coating & Painting
Durable protective coatings matched to RAL or Pantone color codes.
Plating & Polishing
Electroless nickel plating, zinc plating, chrome plating, mirror polishing, & custom passivation.
CNC Milling Service Tolerances
Our precision CNC milling services follow ISO 2768-m for metals and ISO 2768-c for plastics, delivering stable, repeatable dimensional accuracy across 3-axis, 4-axis, and 5-axis CNC milling.
Why Engineers Choose Our CNC Milling Services
Precision CNC Milling Parts
Our precision CNC milling services with tolerances as tight as ±0.01 mm. Our advanced CNC milling machines ensure consistent accuracy for custom metal and plastic parts.
Fast & Scalable CNC Milling Production
Ideal for bridging to full production or scheduling small batches, our low-volume sheet metal fabrication service flexes to fit your timeline, ensuring consistent, on-time delivery with top-notch quality.
Engineering Support
As an experienced CNC milling company, our engineers provide DFM feedback and machining guidance to optimize designs for custom CNC milling services, helping reduce cost and improve manufacturability.
CNC Milling Process forCustom Part Manufacturing
CNC milling uses computer-controlled rotating cutting tools to remove material from a stationary workpiece. By moving the cutting tool or workpiece along multiple axes.
CAD Review
Engineers review your CAD file, material selection, tolerance requirements, and surface finish specifications.
Machine Setup
The workpiece is securely clamped onto the machine table, cutting tools are installed, and the CNC program is loaded and verified.
Milling & Inspection
Rotating cutting tools remove material according to the programmed toolpaths. Finished parts are inspected to verify dimensions, tolerances, & surface quality before delivery.
Applications of CNCMilling
CNC Milling is huge in making a ton of products—anything from car parts to medical devices. It's super efficient because it can produce lots of identical plastic parts with tight tolerances, all at a low cost per part. That's why so many industries rely on it for mass production. Whether it's a simple or complex design, it keeps quality high and production fast.
Advantages ofInjection Molding
Disadvantages ofInjection Molding
High Precision
Produces highly accurate parts with tight tolerances and consistent quality.
Efficiency
Enables continuous automated production with shorter lead times and minimal downtime.
Complex Geometries
Creates intricate shapes and complex designs using multi-axis machining.
Flexibility
Supports a wide range of materials, including metals, plastics, and composites.
Medical Implants
Creates precise hip joints, dental implants, & surgical screws for medical applications.
Engine Components
Manufactures precise engine blocks, cylinder heads, & pistons for automotive.
Electronic Housings
Produces durable enclosures that securely protect electronic components & circuit boards.
Gear Components
Produces gears, splines, and shafts with tight tolerances for machinery & automotive use.
Real Parts & Precision Components
Examples of mission-critical parts manufactured in our facilities for global technology leaders.
Robotic Welded Industrial Base Frame
Heavy tubular machine frame with robotically welded gussets and ground mounting pads.
Sanitary Stainless Pressure Vessel
Hydrostatically tested sanitary mixing vessel with internal ground flush seams.
Frequently AskedQuestions?
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