HS Umformtechnik GmbH

Company profile

HS Umformtechnik GmbH is a family-run German manufacturer of pipework components used to route powders, granules and other bulk solids through pneumatic conveying systems.

Established operation: The company states that it was founded in 1997 and employs around 50 people at its headquarters in Grünsfeld-Paimar, Germany.

Manufacturing footprint: According to the company, production occupies approximately 12,000 square meters, supported by around 5,000 square meters of production and storage space for commonly used dimensions.

Market focus: HS Umformtechnik identifies plastics, food and chemical processing as core markets, while its portfolio is also relevant to plants that require hygienic, abrasion-resistant or frequently reconfigured transfer lines.

The HS Umformtechnik pneumatic conveying components video shows the product range in operation.

Products and technologies

HS Umformtechnik supplies the mechanical pipework between conveying equipment, storage vessels and receiving points.

• Stainless-steel and aluminum pipe bends.
• HVA NIRO wear-resistant stainless-steel bends.
• DWR double-skin bends for abrasive service.
• Pipes, pipe couplings and transport hoses.
• Branch pipes, T-pieces, reducers and transitions.
• Coupling and material-distributor stations.
• Suction lances, Camlock connections and accessories.
• Custom forks, stubs and fabricated special parts.

Stainless-steel pipe bends

Large-radius geometry: HS Umformtechnik specializes in thin-wall, large-radius bends for pneumatic conveying lines.

Forming method: The company states that these bends are cold-formed on CNC mandrel-bending machines to control wrinkling, surface damage and ovality.

Connection preparation: Published product information lists smoothed or shaved weld seams, deburred cut edges and straight leg extensions as available manufacturing features.

These details matter because local steps, internal protrusions and distorted cross-sections can increase pressure loss, disturb the solids trajectory and create impact zones at downstream joints.

Wear-resistant bend options

HVA NIRO: HS Umformtechnik offers a wear-resistant stainless-steel bend intended for abrasive products such as glass-fiber-reinforced plastic granules.

The manufacturer claims a service life 10 to 20 times longer than a standard stainless-steel bend.

This is a supplier performance claim and should be assessed against the conveyed material, particle velocity, solids loading, bend radius and duty cycle of the specific installation. Bend wear is a recurring theme in dense phase conveying of abrasive materials.

DWR double-skin bends: The DWR design places a second shell around the conveying bend to create a protected chamber at the outer radius, where abrasive wear is normally most severe.

HS describes a product-on-product arrangement and a version filled with a hard concrete lining.

The practical catch: The product-on-product version works by retaining conveyed material in the outer chamber after the inner bend wears through. That can be useful for one abrasive product and a poor fit for frequent changeovers.

HS Umformtechnik states that neither DWR version is suitable for food service and that the product-on-product variant is unsuitable for material changes.

Couplings and distribution stations

Modular pipe connections: The coupling portfolio includes stainless-steel couplings and DVK product families used to connect straight pipe, bends and fabricated components.

Project-specific routing: HS Umformtechnik builds coupling stations and material distributors to customer specifications and states that CAD approval drawings are prepared before fabrication.

Its published station construction uses aligned pipe components, vacuum couplings, pipe clamps, stainless-steel frames and optional Camlock connections at the upper outlets.

A coupling station can make manual route selection between storage and process destinations much clearer.

A neat stainless-steel frame doesn't prevent the wrong hose being connected, though. The engineering still needs clear line identification, operator access, manageable connection forces and safeguards against cross-connection or contamination.

Custom pipework

Built from project data: HS Umformtechnik manufactures special parts from customer drawings, sketches or samples.

Published examples include branch pieces with flanges or threaded connections, forks, reducers, extension bends, T-pieces, transition pieces and custom outlets.

Branch-piece range: For stainless-steel branch pipes and T-pieces, the company lists standard angles of 30, 45 and 90 degrees and outside diameters from 38.0 to 154.0 millimeters.

The published standard construction is laser-cut and welded in AISI 304 or 304L.

Aluminum and forming-gas-welded versions are available on request.

Engineering and manufacturing capabilities

Automated cutting and forming: HS Umformtechnik reports using automated laser cutting and CNC mandrel bending for repeatable pipe preparation, including large-radius geometries.

In-house fabrication: Its product range indicates capability across forming, cutting, welding, assembly and frame construction rather than catalogue-bend supply alone.

Stock availability: The company states that common diameters and dimensions are held in stock to support short delivery times.

Quality system: HS Umformtechnik states that it is certified to DIN EN ISO 9001:2015.

Project documentation should confirm the current certificate scope and validity when certification is a contractual requirement.

Applications and materials

The portfolio is principally suited to pneumatic transfer lines handling powders, pellets and granular materials.

• Conveying-line routing around plant structures.
• Connections between silos, receivers, feeders and process equipment.
• Pickup for vacuum conveying through suction lances.
• Manual distribution of material streams through coupling stations.
• Abrasive pellet or granule service at bend locations.
• Stainless-steel pipework for hygienic food and pharmaceutical transfer, where cleanability and material compatibility are required.
• Replacement of worn bends, branches and transitions in existing systems.

What engineers should specify

“Same diameter as the old bend” is not a complete specification. The replacement also has to match wall thickness, radius, tangent lengths, material, connections and the wear or cleaning duty that caused the discussion in the first place.

Material abrasiveness, particle size and shape, conveying velocity, solids loading, operating pressure or vacuum, temperature, cleaning method and changeover requirements all affect the suitable geometry and material. The pneumatic conveying system design guide covers these variables, including the velocity differences between dense and dilute phase conveying.

• Conveyed material and bulk-solids characteristics.
• Line outside diameter and wall thickness.
• Material grade and surface requirements.
• Bend angle, centerline radius and straight-leg lengths.
• Operating pressure or vacuum and design temperature.
• Expected conveying velocity and throughput.
• Abrasion, impact or corrosion duty.
• Coupling type, gasket material and electrical-bonding requirements.
• Food-contact, cleanability or contamination-control requirements.
• Drawing, sketch, sample or interface dimensions for custom parts.
• Installation constraints and required delivery date.

For an abrasion-critical bend, identify where wear occurs in the existing line and whether retained product inside a protective chamber would be acceptable.

Sources

• HS Umformtechnik company profile
• Stainless-steel pipe bends
• HVA NIRO stainless-steel pipe bends
• DWR double-skin pipe bends
• Coupling stations
• Branch pipes and T-pieces
• Custom pipe fittings and special parts