Filtaro Tention Structures are used for “bow-string” tied-arch bridges.

Whereas the deck is anchored at the hangers which are fitted on the bridge piers.

Our “H-Rod” for hangers and pre-stressed bars are manufactured using a specific industrial process including heat treatment (Quenched + Tempered) that increase the mechanical characteristics.

Steel hangers

H-Rods from Filtaro are available in M18 until M160 and in lengths between 200 mm and 17 meters, however the standard grades are S355, S460, S520 and HSA.
All heat treatments and finishes are adjusted to the customer’s grades, for ex. S355NL or S700.

H-Rods advantages:

• variable yield strengths
• variable tensile strengths
• higher elongation
• Young modulus: E = 200000 MPa +/- 5 GPa
• Impact value (-20°C ) > 57J resp. -40°C or – 70°C on demand

– Threading is performed by cold rolling, in accordance with ISO 965-1.
– Standard lengths: 11800 mm
– On demand up to 17 meters

Quality Insurance:

The production of H-Rods is carried out under a strict Quality Management System according to
ISO 9001:20015.

Moreover, each delivery is supplied with a certificate 3.1 according to the norm EN 10204 for each heat treatment lot.
Additionally each bar is individually marked with its heat treatment lot number.

Protection:
Depending on customer requirements, hot galvanisation, zinc metal coating or zinc multi-disc coating for subsequent treatment according to ACQPA and RAL scale can be applied as corrosion protection.

H-Rods in different STAINLESS STEEL grades

– The resulting ductility, tensile and yield strengths are higher than for usual stainless grades.
– The permanent protection of the hangers is better than for other usual austenitic stainless steel like 316L.
– The application range is particularly adapted for city or harbours buildings close to the sea.

Corrosion protections tests under chlorine influence have proved that this grade is more competitive on the market.

H-Rods advantages:

• variable yield strengths
• variable tensile strengths
• higher elongation
• Young modulus: E = 200000 MPa +/- 5 GPa
• Impact value (-20°C) > 57J resp. -40°C or – 70°C on demand

– Threading is performed by cold rolling, in accordance with ISO 965-1.
– Standard lengths: 6200 mm
– On demand until 10 meters

Quality Insurance:

The production of Filtaro H-Rods is carried out under a strict Quality Management System in compliance with ISO 9001:2015.
Consequently, each delivery is supplied with a certificate 3.1 according to the norm EN 10204 for each heat treatment lot.
Additionally, each bar is individually marked with its heat treatment lot number.