Custom Online Weldment Services

Custom weldments and welded assemblies with flexible material, process, and finishing options. Service availability depends on geometry, material, and program requirements.

Send us your files, and we'll build the quote for you!

Request Weldment Services
Types
Design Tips
Advantages and Benefits
Inspection and QA
Applications
Why Us?

LK Tools supports custom weldments to help teams complete complex assemblies efficiently and reliably. We can coordinate material sourcing, cutting/prep, welding, secondary operations, finishing, and inspection—so you receive assemblies ready for integration.

To quote accurately, weldments require more input than single-part RFQs. The guidance below shows the best way to request weldment services so we can confirm scope, tolerances, and inspection expectations early.

Here Is The Best Way To Request Weldment Services With LK Tools

Follow these steps to help us quote and manufacture your assembly as smoothly as possible. If anything is unclear, include what you have and we’ll follow up to confirm missing details.

1) Upload your 3D CAD files

Include all parts and the full assembly.
Attach 2D drawings for critical dimensions.
If you have an inspection template or check fixture requirements, include them.
In your assembly file notes, label it “Assembly” and for welded parts label “Welding” on the items to be joined.

2) Specify welding and build requirements
Include notes for:

Weld type (fillet, butt, lap, etc.) and weld locations
Weld size (throat/leg), length, and continuity (continuous vs intermittent)
Material specs and thicknesses
Cosmetic requirements (grind flush, “as-welded,” visible surfaces)
Tolerances, datums, and any critical-to-function features
Finishing requirements (paint, powder coat, plating, etc.)
Quantity and expected production schedule

3) Quality / documentation requirements (if applicable)
If your program needs special documentation, traceability, or inspection levels, call that out upfront so we can align the process plan.

4) Request a manual quote for complex assemblies
For assemblies with many components, tight tolerances, or specialized inspection, a manual quote is often the most accurate path.

Need help?
Use your website contact form or include your questions in the RFQ notes and our team will respond.

Types of Welding Services

Different welding processes fit different materials, thicknesses, and cosmetic requirements. LK Tools can support multiple welding methods depending on project needs and supplier capability.

TIG Welding (GTAW)
Clean, controlled welds often selected for cosmetic parts, thin materials, and precision assemblies.

MIG Welding (GMAW)
Efficient and widely used for general fabrication and production weldments.

FCAW (Flux-Cored Arc Welding)
High deposition and deep penetration for structural and heavier-duty work (project-dependent).

Stick Welding (SMAW)
Versatile process often used for structural work and repairs (project-dependent).

Submerged Arc Welding (SAW)
Well-suited for long seams and thick sections in certain fabrication environments (project-dependent).

Spot Welding (Resistance Spot Welding)
Common for sheet metal assemblies where speed and repeatability matter (project-dependent).

If you don’t see the welding process you need, include your requirements and we’ll review options.

Require Weldment Services?

Weldment Design Tips

Good weldments start with good design and clear callouts. Below are practical DFM tips:

Choose Appropriate Weld Seams:

Butt weld: used for load-bearing joints and full-penetration seams (design-dependent).
Fillet weld: common for T-joints and lap joints.
Lap weld: useful for overlapping sheet assemblies.

An illustration of different weld seams.

Use Standard Weld Symbols: Include weld symbols and notes on 2D drawings to avoid ambiguity and reduce rework.

Three charts showing supplementary, arc, and resistance welding symbols.

An illustration of weldment symbols.

Mitigate Distortion in Long Seam Welds:

Intermittent (stitch) welding, balanced weld sequencing, and proper fixturing can reduce warpage—especially on thin wall structures.

Avoid Welding Dissimilar Metals: Mixing alloys can create joining issues and corrosion risks. When dissimilar metals are required, call it out so we can review feasibility.

Account for Heat-Affected Zones: Expect local distortion near welds and plan datum strategy accordingly—especially for tight-tolerance assemblies.

Define appropriate gaps: Too small a gap can cause lack of fusion; too large can increase burn-through risk. Call out root opening and prep where needed.

Advantages and Benefits of LK Tools’ Weldment Service

LK Tools can help simplify weldment sourcing and manufacturing by coordinating the workflow end-to-end.

Key advantages:

Turnkey fabrication support — material sourcing, prep, welding, and finishing under one workflow
Scalable capacity — from prototypes to repeat production (project-dependent)
Engineering support — help aligning weld callouts, tolerances, and assembly sequence

Additional benefits:

Multiple welding processes available depending on project needs
Secondary operations support (cutting, machining, inserts/hardware, finishing)
Clear communication during quoting, sampling, and production releases

Weldment Inspection and QA

Inspection needs vary widely by weldment type. We can support inspection planning and documentation options based on your requirements.

Common inspection options (project-dependent):

Standard inspection — visual checks for obvious surface defects and workmanship
Dimensional verification — measurement of critical-to-function dimensions and assembly fit
Advanced testing — dye penetrant, ultrasonic testing, or radiography when required

If you need inspection records, sampling plans, traceability, or specific acceptance criteria, include that in your RFQ notes.

(Remove the “100% quality control” and “certifications offered” list unless you can verify those certifications for LK Tools.)

An illustration showing the dye penetrant inspection of welds.

Certifications Offered:

AWS (American Welding Society): Essential for ensuring adherence to welding standards, such as AWS D1.1 for structural welding.
AS9100: Critical for quality management in aerospace welding applications.
NADCAP: Necessary for compliance with special process requirements in aerospace and defense, including welding.
ISO 9001: Fundamental for maintaining a consistent quality management system applicable to welding.
ITAR Registered: Important if your welding work involves defense-related manufacturing and export controls.

Each certification reflects our commitment to quality and precision, giving you confidence in every weld.

Weldment Applications

Custom weldments are used across many industries and applications, including:

Automotive and transportation assemblies (frames, brackets, mounts)
Energy and power components (structures, supports, enclosures)
Shipbuilding and construction weldments (project-dependent)
Industrial equipment frames, fixtures, and machine bases
Medical/lab equipment frames and housings (requirements vary by program)

Whether you need a single prototype weldment or repeat production assemblies, we can review your requirements and recommend a practical manufacturing plan.