PROGEF PP-H Segment-Welded Bend 45 Degrees SDR17.6

  Datasheet (PDF)

The Georg Fischer PROGEF Standard 45-degree bend in SDR17.6 is a heavy-duty segment-welded thermoplastic fitting designed for directional flow routing in large-bore industrial pressure piping. Manufactured from isotactic polypropylene homopolymer (PP-H) in accordance with EN ISO 15494, this fitting spans outer diameters from d355 mm to d500 mm. Operating at a nominal pressure of 4 bar (PN4), it provides dependable process integrity for industrial water, chemical processing, and wastewater lines.

Materials and standards

The fitting is fabricated from industrial-grade polypropylene homopolymer (PP-H), ensuring exceptional structural rigidity and chemical durability across continuous industrial operations. It complies strictly with European and international manufacturing standards for industrial piping systems.

Manufactured by Georg Fischer (GF Piping Systems), the PROGEF PP-H material formulation delivers broad chemical resistance against aggressive acids, alkalis, inorganic salts, and solvent mixtures. Operating reliably within demanding processing environments, PP-H offers superior resistance to environmental stress cracking compared to standard polyolefins. The segment-welded geometry is constructed in accordance with EN ISO 15494 standards for industrial thermoplastic piping, engineered for a service life of up to 25 years when operated within continuous operating parameters.

Technical specifications

The PROGEF segment-welded 45-degree bend is calibrated for large-diameter distribution lines requiring low flow resistance and dependable pressure containment. Its multi-segment layout ensures uniform hydraulic transition across 45-degree deviations.

• Material: Polypropylene homopolymer (PP-H)
• Standard: EN ISO 15494
• Dimensional range: d355 mm to d500 mm
• Standard Dimension Ratio: SDR 17.6
• Nominal pressure rating: 4 bar (PN4)
• Jointing method: Butt fusion according to DVS 2207

Installation and jointing

Butt fusion welding according to DVS 2207 provides a permanent, leak-tight joint between the fitting spigots and matching SDR17.6 PP-H piping. This heated-tool process establishes a completely homogeneous molecular bond across the joint interface.

During installation, precision-calibrated heating elements plastify the matching pipe ends under controlled temperature and pressure profiles before fusing them without foreign bonding agents or mechanical elastomeric gaskets. The welded connection achieves tensile strength equivalent to the parent pipe, eliminating joint weak points exposed to aggressive chemical media or cyclic thermal expansion. The smooth internal bore formed by the fused segments prevents particle accumulation, minimizing sedimentation risks in slurries, industrial effluents, and process drainage networks.