Specialty Bends

Elbows are bends with a very tight Radius, typically r=0.5x OD. Elbows allow changes in direction using minimal space. Injection moulded elbows have external reinforcement built into the design and are available in sizes up to dn630. In sizes above dn315 WSD require, segmented bends to be used in water supply. These are fabricated from pipe sections cut on a ≤ 7.5º angle and butt welded into one or more mitre joints ≤15º. Segmented bends cannot be manufactured with a tight radius, as space is required between each segment for the butt weld and to grip the pipe during fabrication. WSD required radus for segmented bends is r=2.5xOD (PS Appendix 22.09 Clause 5.5.4). Tighter radii segmented bends can be achieved using 15º cut angles however this means fabricating the bends using 3 x 30º mitre joints rather than 6 x 15º, however, 15º cut angle bends must be pressure de-rated as required in BS EN 12201-3 Annex B Table B3 making them unsuitable for the network as the bends rated pressure is less than the pipe.

Fabricated Elbows

Where there is insufficient space to install large radius segmented bends, fabricated elbows can be used.  Similar to Fabricated tees, fabricated elbows are created by machining a fitting body from hollow bar. Reinforcement is included during machining and any angle from 1º to 45º can be created. Spigots are factory butt-welded to the fitting body to create a fabricated elbow with a radius of r=0.5xOD. No de-ration is required, as the reinforcement is included as part of the fitting design. 

For angles greater than 45º, two fittings bodies that sum to the required angle (eg: 2x45º fabricated elbows = 90º) are factory butt welded together.  Using this method any angle from 1º to 90º can be manufactured with a radius of r=~0.5xOD.  These bends are ideal for installation in tight construction environments found in Hong Kong, or where there is insufficient space to install segmented bends in larger sizes. See some examples of Reinert Ritz fabricated compact short radius elbows in use below in both 90º and custom angles.

Fabricated elbows come standard in 45º. Elbows up to 90º are manufactured by factory butt welding two 45º elbows together. Fabricated elbows are machined from black PE100+ compound in PN10 SDR17 and PN16 SDR11 ratings. They feature long spigots for electrofusion or butt fusion joining on site. Any fabricated elbow angle from 1º to 45º can be manufactured. Fabricated elbows have a radius of r=~0.5xOD.

Black 11º Fabricated Spigot Elbows / PN10-PN16 / SDR17-SDR11

Fabricated elbows are manufactured from black PE100+ compound. They feature long spigots for electrofusion or butt fusion joining on site. Any fabricated elbow angle from 1º to 45º can be manufactured. Tables below show standard 11º elbow with a radius of ~0.5xOD for reference.

Custom fabricated elbows do not require pipe to manufacture. Individual elbows may be ordered in any angle.

PN10 SDR17

PN16 SDR11 d1 le1 r z1 - 11º Availability in Hong Kong
P5314.76.355 P5316.76.355 355 200 177 309 14-16 weeks
P5314.76.400 P5316.76.400 400 300 200 411 14-16 weeks
P5314.76.450 P5316.76.450 450 300 225 413 14-16 weeks
P5314.76.500 P5316.76.500 500 300 250 426 14-16 weeks
P5314.76.560 P5316.76.560 560 300 280 451 14-16 weeks
P5314.76.630 P5316.76.630 630 300 315 460 14-16 weeks
P5314.76.710 P5316.76.710 710 500 355 662 14-16 weeks
P5314.76.800 P5316.76.800 800 500 400 663 14-16 weeks
P5314.76.900 P5316.76.900 900 500 450 732 14-16 weeks
P5314.76.1000 P5316.76.1000 1000 500 500 741 14-16 weeks
P5314.76.1200 1200 500 600 709 14-16 weeks

 

Black 22º Fabricated Spigot Elbows / PN10-PN16 / SDR17-SDR11

Fabricated elbows are manufactured from black PE100+ compound. They feature long spigots for electrofusion or butt fusion joining on site. Any fabricated elbow angle from 1º to 45º can be manufactured. Tables below show standard 22º elbow with a radius of ~0.5xOD for reference.

Custom fabricated elbows do not require pipe to manufacture. Individual elbows may be ordered in any angle.
PN10 SDR17 PN16 SDR11 d1 le1 r z1 - 22º Availability in Hong Kong
P5314.77.355 P5316.77.355 355 200 177 326 14-16 weeks
P5314.77.400 P5316.77.400 400 300 200 431 14-16 weeks
P5314.77.450 P5316.77.450 450 300 225 436 14-16 weeks
P5314.77.500 P5316.77.500 500 300 250 450 14-16 weeks
P5314.77.560 P5316.77.560 560 300 280 478 14-16 weeks
P5314.77.630 P5316.77.630 630 300 315 491 14-16 weeks
P5314.77.710 P5316.77.710 710 500 355 697 14-16 weeks
P5314.77.800 P5316.77.800 800 500 400 702 14-16 weeks
P5314.77.900 P5316.77.900 900 500 450 776 14-16 weeks
P5314.77.1000 P5316.77.1000 1000 500 500 790 14-16 weeks
P5314.77.1200 - 1200 500 600 768 14-16 weeks

 

Black 45º Fabricated Spigot Elbows / PN10-PN16 / SDR17-SDR11

Fabricated elbows are manufactured from black PE100+ compound. They feature long spigots for electrofusion or butt fusion joining on site. Any fabricated elbow angle from 1º to 45º can be manufactured. Tables below show standard 45º elbow with a radius of ~0.5xOD for reference.

Custom fabricated elbows do not require pipe to manufacture. Individual elbows may be ordered in any angle.
PN10 SDR17 PN16 SDR11 d1 le1 r z1 - 45º Availability in Hong Kong
P5314.79.355 P5316.79.355 355 200 177 365 14-16 weeks
P5314.79.400 P5316.79.400 400 300 200 475 14-16 weeks
P5314.79.450 P5316.79.450 450 300 225 485 14-16 weeks
P5314.79.500 P5316.79.500 500 300 250 505 14-16 weeks
P5314.79.560 P5316.79.560 560 300 280 540 14-16 weeks
P5314.79.630 P5316.79.630 630 300 315 560 14-16 weeks
P5314.79.710 P5316.79.710 710 500 355 775 14-16 weeks
P5314.79.800 P5316.79.800 800 500 400 790 14-16 weeks
P5314.79.900 P5316.79.900 900 500 450 875 14-16 weeks
P5314.79.1000 P5316.79.1000 1000 500 500 900 14-16 weeks
P5314.79.1200 - 1200 500 600 900 14-16 weeks

 

Black 90º Fabricated Spigot Elbows / PN10-PN16 / SDR17-SDR11

Fabricated 90º elbows are manufactured by factory butt welding two 45º elbows together.  Elbows are machined from black PE100+ compound. They feature long spigots for electrofusion or butt fusion joining on site. Any fabricated elbow angle from 1º to 45º can be manufactured. Tables below show standard 90º elbow with a radius of ~0.5xOD for reference.

Custom fabricated elbows do not require pipe to manufacture. Individual elbows may be ordered in any angle.
PN10 SDR17 PN16 SDR11 d1 le1 r z1 - 90º Availability in Hong Kong
P5314.81.355 P5316.81.355 355 200 177 560 14-16 weeks
P5314.81.400 P5316.81.400 400 300 200 684 14-16 weeks
P5314.81.450 P5316.81.450 450 300 225 709 14-16 weeks
P5314.81.500 P5316.81.500 500 300 250 753 14-16 weeks
P5314.81.560 P5316.81.560 560 300 280 828 14-16 weeks
P5314.81.630 P5316.81.630 630 300 315 874 14-16 weeks
P5314.81.710 P5316.81.710 710 500 355 1111 14-16 weeks
P5314.81.800 P5316.81.800 800 500 400 1149 14-16 weeks
P5314.81.900 P5316.81.900 900 500 450 1327 14-16 weeks
P5314.81.1000 P5316.81.1000 1000 500 500 1386 14-16 weeks
P5314.81.1200 - 1200 500 600 1403 14-16 weeks