Custom Welding Construction Services
BSG delivers full-lifecycle welding construction, from prefabricated halls and structural steel to complex welded assemblies. Our certified network of production partners operates under EN 1090 and ISO 3834, combining European engineering standards with competitive Balkan economics.
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Welding Construction Capabilities
BSG provides full-lifecycle welding services, from heavy structural steel fabrication to precision-welded assemblies. Our certified network covers TIG, MIG/MAG, FCAW, robotic, submerged arc, and resistance welding technologies.
Prefabricated Halls & Steel Structures
Large-scale structural steelwork for industrial halls, warehouses, and commercial buildings, fully engineered, fabricated, and delivered ready for assembly.
Welded Joints & Structural Nodes
Precision-welded joints and connection nodes for load-bearing structures, designed and inspected per EN 1090 and ISO 5817 quality classes.
Modular Process Skids
Custom-fabricated modular skid frames for chemical, oil & gas, and process industries, pre-assembled and tested before shipping.
Industrial Piping & Spooling
Shop-fabricated piping spools and assemblies for industrial installations, with full material traceability and pressure testing.
Heavy-Duty Frames & Equipment Supports
Robust welded frames and machine bases engineered for heavy static and dynamic loads in machinery and equipment applications.
Complex Welded Assemblies
Multi-component welded assemblies combining different profiles, plates, and machined elements into finished, ready-to-install products.
Welding Materials
We work with a full range of structural and engineering metals, sourced with full mill certificates and EN 10204 3.1 documentation.
Steel
- S355: most popular structural grade in the EU
- S420 / S460: high-strength for heavy-load applications
- Excellent weldability across all grades
- EN 10025 certified material supply
Aluminium
- Lightweight with high strength-to-weight ratio
- Good corrosion resistance
- Ideal for TIG welding processes
- EN AW-6082: structural-grade aluminium
Stainless Steel
- Superior corrosion resistance
- 304 and 316L: most widely used austenitic grades
- Duplex: high strength for marine & chemical environments
- Clean, aesthetic weld finishes with TIG
From Drawing to Delivery
A streamlined process personally managed by BSG at every stage.
Submit Your Request
Upload drawings, specifications, or a bill of materials. Our engineers review your requirements within 24 hours.
We Match & Engineer
BSG selects and validates the right factory from our certified network, and their engineers prepare a detailed production plan.
Production + Quality Control
We supervise manufacturing on-site, perform in-process inspections, and ensure every weld meets EN 1090 and ISO 5817 requirements.
Delivered To You
One supplier, one invoice, one responsibility. Your finished welded assemblies are delivered directly to your EU facility.
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Welding Technologies Available
Six proven welding processes, each selected and matched to your material, joint design, and production requirements by our partner engineers.
TIG Welding
TIG welding (GTAW) is a highly precise process that uses a non-consumable tungsten electrode to produce the weld. It is ideal for stainless steel, aluminum, and visible components that require a clean, spatter-free appearance and strict dimensional stability. This method offers exceptional control for intricate, high-quality, and structurally critical joints.
Technical Specifications
- Process
- GTAW (Gas Tungsten Arc Welding)
- Best For
- Stainless steel, aluminium, thin-wall components
- Finish Quality
- Excellent (no spatter, minimal grinding needed)
- Precision
- Very high (ideal for tight tolerances)
- Standard
- EN ISO 9606-1 qualified welders
TIG Welding
TIG welding (GTAW) is a highly precise process that uses a non-consumable tungsten electrode to produce the weld. It is ideal for stainless steel, aluminum, and visible components that require a clean, spatter-free appearance and strict dimensional stability. This method offers exceptional control for intricate, high-quality, and structurally critical joints.
Technical Specifications
- Process
- GTAW (Gas Tungsten Arc Welding)
- Best For
- Stainless steel, aluminium, thin-wall components
- Finish Quality
- Excellent (no spatter, minimal grinding needed)
- Precision
- Very high (ideal for tight tolerances)
- Standard
- EN ISO 9606-1 qualified welders
Design Guidelines for Welded Assemblies
Follow these best practices to reduce manufacturing cost, minimize distortion, and ensure your welded construction meets EN 1090-2 requirements.
Clean Drafting & General Weld Notes
- Reduce Drawing Clutter
- Clean Drawing approach
- Quality Class: Standard
- ISO 5817 Class C
- Quality Class: Critical
- ISO 5817 Class B
Adopt general notes instead of individual weld symbols on every joint to simplify fabrication drawings.
Specify Class C for standard structural frames to reduce unnecessary over-inspection.
Reserve Class B for fatigue-loaded joints and safety-critical structural nodes only.
Weld Sizing & Heat Input Control
- Avoid Overwelding
- 4-5 mm fillet standard
- Prioritize Fillet Welds
- Use wherever possible
- Heat Input
- Control per WPS
Larger welds increase heat input, distortion, and cost. A standard 4 mm or 5 mm fillet is usually sufficient.
Fillet welds avoid expensive edge preparation and reduce the need for non-destructive testing (NDT).
Follow the qualified Welding Procedure Specification (WPS) to manage heat input and minimize distortion.
Joint Accessibility & EN 1090 Compliance
- Torch Clearance
- Design for access
- Visual Testing (VT)
- 100% per EN 1090-2
- NDT Access
- Plan for UT / MT
Ensure physical space for proper MIG/MAG torch angling at every joint location.
EN 1090-2 requires 100% visual testing on all welds, so joints must be accessible for evaluation.
Where ultrasonic or magnetic particle testing is required, ensure probe access in the design phase.
Smart Component Preparation
- Pre-Machining Plates
- Process before welding
- Self-Locating Geometry
- Alignment features
- Edge Preparation
- Per WPS requirements
Fully process plates (laser cut, drill, countersink) before assembly to avoid post-weld machining.
Incorporate tabs, slots, and edge geometries to aid fitters and reduce manual measuring during fit-up.
Specify bevel angles and root gaps according to the qualified welding procedure to ensure consistent penetration.
Managing Structural Distortion
- Symmetrical Weld Placement
- Balance around neutral axis
- Staggered Welding
- Intermittent technique
- Pre-Set / Pre-Camber
- Compensate for shrinkage
Distribute welds symmetrically around the neutral axis to balance shrinkage forces and minimize warpage.
Allow tolerances for intermittent (staggered) welding techniques to control cumulative distortion.
Pre-set components in the opposite direction of expected distortion so the final assembly is within tolerance.
Optimal Joint Selection
- Favor Tee & Lap Joints
- Recommended default
- Limit Butt & Edge Joints
- Critical nodes only
- Basic Joint Types
- Butt, Corner, Edge, Tee, Lap
Tee and lap joints naturally accommodate fillet welds and are cost-effective for standard structural connections.
Reserve butt and edge joints for high-load or fatigue-critical areas due to higher preparation and NDT costs.
Understand the five fundamental joint types and select the most appropriate one for each connection in the design.
Why Companies Choose BSG
We combine Balkan production economics with European engineering standards and a single-contract model.
Confidence
You always know who manufactures your parts and how.
- Verified supplier network
- Full production transparency
- Direct factory communication
Control
BSG personally oversees the entire project from start to finish, working directly with engineers at our partner facilities.
- Dedicated point of contact
- Real-time progress updates
- On-demand inspections
Capacity
Access unused production capacity across a verified network of Balkan factories.
- 50+ manufacturing partners
- Scalable production volumes
- Multi-technology access
Cost Down
Lower European cost pressure without the logistical risks of moving production to Asia.
- 30-50% cost reduction
- 2-4 day EU delivery
- No ocean freight delays
Have a Welding Construction Project?
Upload your technical drawings and BSG will review feasibility, select the right production partner, and prepare a detailed quotation.