--- title: "Steel Fitting & Jig Building" description: "Professional structural steel fitting, jig building and assembly for welded sub-assemblies and structures. Precision contract manufacturing at Bock, Germany." url: "https://bock-gmbh.com/en/services/structural-steel-fitting/" language: "en" index: "https://bock-gmbh.com/en/llms.txt" --- # Steel Fitting and Jig Building – Contract Manufacturing Germany Steel fitting, jig building and structural steel assembly in contract manufacturing – craftsman precision for single parts, assemblies and welded structures, all trades under one roof in Lorch. Construction mechanics with many years of experience in heavy steel manufacturing. Tailored welding and assembly jigs ensure dimensional accuracy and distortion control. Joined components pass directly into welding — MAG and submerged-arc certified, TIG by qualified welders. Structural steel, fine-grain structural steel to S1100, Hardox 400/500 and stainless steel 1.4301/1.4571. Single parts, assemblies, prototypes and small series are all manufactured alike. Certified execution of load-bearing steel components with internal quality assurance and NDT on request. ## Structural Steel Fitting in Contract Manufacturing Structural steel fitting forms the craft foundation for the production of mechanical assemblies and steel structures. At Bock Maschinenbau this covers cutting, drilling, thread tapping, deburring and the precise fitting of steel parts to drawing. Our construction mechanics and fitters work directly with machining, welding and steel fabrication – all trades under one roof. This allows short routes and efficient contract manufacturing even for small quantities and single parts from batch size 1. Materials: structural steel S235 to S355, fine-grain structural steel, Hardox, stainless steel 1.4301/1.4571 and special alloys. Components from a few kilograms up to 50 tonnes are safely handled and positioned with the 2×25 t overhead travelling crane. Component assembly ## Jig Building for Special Purpose Machinery and Steel Fabrication Jig building covers the design and manufacture of clamping, welding and assembly aids for dimensionally accurate work. Welding jigs ensure the reproducibility of component positions and reduce reject rates in series production. Bock manufactures welding jigs, assembly gauges, grippers and special fixtures to customer specification. Re-clamping fixtures for the handling of heavy steel parts as well as inspection gauges for quality assurance are also part of the contract manufacturing scope. Structural steel fitting and jig building at Bock are integrated directly into the manufacturing chain: cutting, flame cutting, welding, blasting and painting from a single source. On-time delivery – single parts and small series to customer requirements. Special machinery ## Materials for Steel Fitting Steel fitting and assembly at Bock cover all common structural and special steels: - Structural steel S235, S355 – Standard structural steel - Fine-grained structural steel up to S1100 – high-strength, weldable - Hardox 400 / 500 – wear-resistant steel for high-stress components - Stainless steel 1.4301, 1.4571 – corrosion-resistant - Special steels to drawing and customer specification Material certificates and full material traceability are provided on request or in line with project requirements. Heavy Welded Structures ## Typical Applications Steel fitting and jig building at Bock are used for: - Assembly of crane jibs, frames and load-bearing steel structures - Tacking and welding jigs for long girders and profiles - Assembly of pipe systems and structural connections - Precise joining and positioning of heavy assemblies prior to final welding Joined components pass directly into welding within the same facility — MAG and submerged-arc certified, TIG by qualified welders. All services at a glance ## Impressions from steel fitting and jig building Views: hand-finishing inside a rolled XXL shell course on the welding turning rolls – and the same component twice, the drum shell before assembly with its turned outer surface, drilled hole pattern and flange bolt circle, and after assembly and painting, completed with ring gear, bearing pedestal and base plate. Plus a welded pipe bend assembly with a flange ring, built from rolled segments. ## Steel Fitting at Bock – Your Advantages Bock Maschinenbau offers steel fitting and jig building as part of a complete manufacturing process: - Experienced fitters - Construction mechanics and fitters with many years of experience in heavy steel manufacturing. - Jig building expertise - Tailored welding and assembly jigs ensure dimensional accuracy and distortion control on complex assemblies. - Integrated with welding - Joined components pass directly into welding, all trades under one roof – MAG and submerged-arc certified, TIG by qualified welders. - Contract manufacturing without minimum quantities - Single parts, assemblies, prototypes and small series are manufactured alike. - DIN EN 1090-2 EXC3 & ISO 9001 - Certified execution of load-bearing steel components with internal quality assurance and NDT records on request. - On-time delivery - Delivery ex works Lorch or carriage paid with reliable deadlines, transparent communication and short response times for changes. Companies from the Ostalbkreis, the Stuttgart area and the DACH region outsource metalworking, fixture-building and assembly work to us – all trades under one roof in Lorch. Contact ## Frequently asked questions about steel fitting and jig building ### Which work steps does steel fitting in contract manufacturing cover? URL: https://bock-gmbh.com/en/services/structural-steel-fitting/#faq-schlosserarbeiten-lohnfertigung-arbeitsschritte Steel fitting at Bock Maschinenbau covers cutting, drilling, tapping, deburring and the precise fitting of steel parts to drawing. This includes the precise joining and positioning of heavy assemblies before final welding, as well as tacking and welding jigs for long girders and profiles. Single parts, assemblies, prototypes and small series are manufactured from batch size 1. ### Which fixtures are built in contract jig building? URL: https://bock-gmbh.com/en/services/structural-steel-fitting/#faq-vorrichtungsbau-lohnfertigung-vorrichtungen Bock designs and manufactures clamping, welding and assembly aids to customer specification: welding jigs, assembly gauges, grippers and special fixtures, re-clamping fixtures for handling heavy steel parts, and inspection gauges for quality assurance. ### Are the joined parts welded in the same company after the steel fitting work? URL: https://bock-gmbh.com/en/services/structural-steel-fitting/#faq-endschweissen-im-selben-betrieb Yes. Joined components pass directly into welding in the same company; cutting, oxy-fuel cutting, welding, blasting and painting are integrated with the steel fitting work into one production chain. Welded assemblies ### For which catchment area are steel fitting and jig building undertaken? URL: https://bock-gmbh.com/en/services/structural-steel-fitting/#faq-einzugsgebiet-schlosserarbeiten-vorrichtungsbau Bock undertakes steel fitting, jig building and assembly work at the Lorch plant for companies from the Ostalbkreis, the Stuttgart area and the DACH region. Delivery is ex works Lorch or carriage paid. ## Structural Metalworker / Fitter (m/f/d) Structural Metalworker / Fitter (m/f/d) — As a Structural Metalworker or Fitter (m/f/d), you will carry out fitting and assembly tasks on steel assemblies and special-purpose machinery structures at our site in 73547 Lorch, near Schwäbisch Gmünd, Baden-Württemberg. ## Request steel fitting and jig building Send us drawings, assembly requirements and quantities. We review the project and prepare a detailed quotation. ### Alexander Schulz For new enquiries, quotations and technical questions on the feasibility of your project. ### Jochen Hack