Problems with wear and tear we have the solution!

HVA NIRO® highly wear-resistant stainless steel pipe bends from HS Umformtechnik have been developed especially for the conveyance of glass fiber reinforced plastic granulates. Due to their long service life (10-20 times longer than that of standard stainless steel pipe bends) the exchange cycles of the bends at the customer can be reduced extremely. This saves the customer money!

Another advantage is the easy assembly and easy handling of HVA NIRO® pipe bends, because no special pipe couplings (stepped pipe coupling) and no special safety measures are required, such as for glass tube bends. HVA NIRO® pipe bends are available from outer diameter 38.0 mm to 168.3 mm in radii 75 / 100 / 150 / 250 / 300 / 500 / 800 / 1000 mm with wall thickness from 1.5 mm to 2.0 mm. HS Umformtechnik can also manufacture complete coupling stations / material distributors in highly wear-resistant versions. Equipped with single elements like bends, branchs or tubes of HVA NIRO® or 3.3 borosilicate glass. Units are mounted in a frame with outlets made of stainless steel tubes 50.0 x 1.5 mm. Single units (bends, branch pipes, pipes) are connected with DVK 6 vacuum couplings, exactly aligned and bolted to the frame construction using pipe clamps. With camlock connections made of aluminium at the upper outlets. CAD drawings will be designed to your individual specifications for your approval.

Using the most modern equipment HS Umformtechnik is able to produce further components for stainless steel pipe systems like:

high quality stainless steel pipe bends, pipe couplings, coupling stations, suction lances, branch pipes, reducers and special parts – competent, fast and according to individual customer needs if desired.

Our speciality are thin-walled pipe-bends with large bending radius, especially for pneumatic conveying systems. The pipe-bends are cold-bent without any pleats on CNC-mandrel machines. Material: stainless steel AISI 304 / 304L or AISI 316 L / AISI 316 Ti (other material at request). Outer pipe diameter from 38.0 mm – 206.0 mm with wall thickness 1.5 mm / 2.0 mm / 3.0 mm – greater wall thickness at request. Available in radius 75 / 100 / 115 /150 / 180 / 250 / 300 / 500 / 800 / 1000 / 1200 and 1500 mm.

Our quality management generally guarantees:

  • welded seam smoothed or shaved (DIN 11 850 resp. DIN 17 457)
  • absolutely wrinkle-free, no start-up bulges
  • no scratching or scoring
  • extremely low ovality
  • visually aesthetic surface
  • leg extension each side
  • deburred sawing edges

For connection of stainless steel pipe bends and tubes we recommend our couplings DVK 6 for suction conveying (outer diameter 33.7 mm to 110.0 mm) and DVK-HD® for pressure conveying (outer diameter 60.3 mm to 206.0 mm). We can deliver from stock with different gaskets: black rubber, white nitrile, or special gaskets on request: EPDM, silicone, viton. Our couplings are TÜV-tested, and available in different length: 100, 150 and 200 mm or longer.

In addition we have special couplings in our delivery program like: pipe couplings DVK-HD® with traction-relief, pipe coupling DVK 6 – quick closure, DVK 6 – FIX, DVK 6 with stainless steel inner ring and coupling for connecting glass pipe bends with stainless steel pipes.

For further information please visit our website: