As a contract manufacturer in steel fabrication we supply bridge construction, tunnel construction and infrastructure projects with load-bearing welded structures — truss girders, plate girders, cross members and load-bearing structures up to 50 t part weight, welded and tested to DIN EN 1090-2 EXC3 in Lorch in the Stuttgart region.
Load-bearing steel structures for bridge, tunnel and infrastructure works — manufactured to drawing and structural specification.
Truss girders, welded plate girders and cross members in structural steel S235/S355 and fine-grain structural steel up to S1100.
Heavy, long components up to 50 t part weight and 26 m in length — safe handling on the crane system with 25 t.
Long load-bearing longitudinal seams are produced by the submerged arc process — uniform, low-stress and documented over the full component length.
Load-bearing welds to EXC3, the highest execution class certified in practice — plus EN ISO 3834-2 and NDT Level 2 in-house.
Steel fabrication for bridge construction and infrastructure has to carry loads for decades: traffic loads change by the second, and wind, temperature range and weather are added. Every load-bearing weld therefore has to be designed for fatigue strength — and its quality must be verifiable without gaps. As a certified welding contractor we manufacture load-bearing steel structures for bridge, tunnel and infrastructure projects to your drawing and structural specification, welded to DIN EN 1090-2 EXC3.
The long load-bearing seams on plate and truss girders are welded by the submerged arc process: high deposition rate, uniform weld appearance and documented quality over the full girder length. Against distortion and residual stresses we use flame straightening and vibration stress relief; connection and functional faces as well as hole patterns are then produced on gantry mills up to 26 m component length.
From the flame-cut blank on the 20 × 3.5 m table up to 200 mm plate thickness through welding, straightening and CNC machining to shot blasting and industrial painting, everything is produced under one roof in Lorch in the Stuttgart region. That shortens lead times, avoids transport risks with heavy components and secures seamless material traceability to EN 10204.
We manufacture to drawing and structural specification — welded, straightened, machined and documented:
Further components for bridge, tunnel and civil engineering works are manufactured to drawing — simply send us your documents.
For bridge, tunnel and infrastructure components we process structural steel S235/S355 and high-strength fine-grain structural steel up to S1100 — from a stock of over 40 material grades, with a 3.1 mill certificate to EN 10204, from our own store and in exact saw or flame cutting.
Load-bearing welds are made to DIN EN 1090-2 EXC3 and EN ISO 3834-2, and we keep distortion under control with a coordinated welding sequence, flame straightening and vibration stress relief — so that long girders reach machining and erection dimensionally accurate.
Corrosion protection completes the process: shot blasting to Sa 2.5 and coating to EN ISO 12944 in our own plant, so that load-bearing components go to site protected — an essential factor for the service life of infrastructure works.
Materials at a glance
Bridge and tunnel components depend on the quality of their welds. The long, thick seams of load-bearing girders are welded by the submerged arc process — and then tested in-house.
Long longitudinal seams on plate girders
Submerged arc welding with a high deposition rate — uniform, reproducible weld appearance over the full girder length.
Web-to-flange seams on bridge girders
Thick sections in fine-grain structural steel
Multi-pass submerged arc seams in fine-grain structural steel up to S1100 — with a coordinated welding sequence against distortion.
Flange plates on cross members
Verifiable weld quality for EXC3
Welded to EN ISO 3834-2, tested with MT by our own Level 2 inspectors in-house and with UT at our plant by our cooperation partner — including documentation for your verification.
Load-bearing butt and fillet welds
Load-bearing components for bridge, tunnel and infrastructure projects are manufactured to DIN EN 1090-2 EXC3 — the highest execution class certified in practice — and welded to EN ISO 3834-2 with comprehensive quality requirements. Every heat stays traceable without gaps through material marking to EN 10204 — from goods inwards to delivery.
Dynamically loaded welds on bridge and tunnel components require reliable test evidence:
We match the scope of testing and documentation to your specification — from the welding log to the 3.1 mill certificate for your structural documentation.
Yes. We manufacture truss girders, plate girders, cross members and load-bearing structures to your drawing and structural specification — welded to DIN EN 1090-2 EXC3, the highest execution class certified in practice, and EN ISO 3834-2.
Structural steel S235/S355 and high-strength fine-grain structural steel up to S1100, and stainless steel where required — with a 3.1 mill certificate to EN 10204 from our own stock, flame-cut up to 200 mm plate thickness.
Up to 50 t part weight and 26 m component length. Handling is done by our crane system with 25 t; machining takes place on gantry mills in the same format.
By visual, dye penetrant and magnetic particle testing (VT/PT/MT) by our own Level 2 inspectors to DIN EN ISO 9712 in-house; ultrasonic testing (UT) is carried out at our plant by our cooperation partner — documented with welding logs for your EXC3 verification and structural documentation.
Yes. We blast to Sa 2.5 and coat to EN ISO 12944 in our own plant — load-bearing components leave production ready to install with durable corrosion protection.
Yes. Manufacturing takes place in Lorch in the Stuttgart region; we supply steel fabricators, main contractors and plant builders throughout Germany and in the DACH region. Heavy components are loaded by the crane system and heavy-duty forklifts up to 16 t.
Send us your drawings and structural specifications for truss girders, plate girders, cross members or tunnel construction components — we will assess feasibility, material availability and schedule and prepare a no-obligation quote.
Certified to DIN EN 1090-2 EXC3 · 3.1 mill certificate to EN 10204.
