Aluminum weld-on fittings for irrigation mainlines, pump stations, and custom fabrication — designed to be welded directly to aluminum pipe, tanks, and structures to create permanent, leak-free connection points. This collection covers the full range of weld-on half couplers, half nipples, flanges, elbows, and transition cones in sizes from 1/2" through 14".

Aluminum Half Couplers (HC series) — weld-on female threaded outlets for adding NPT connections to aluminum pipe or structures. Available in 1/2" through 10".

Aluminum Half Nipples (NA series) — weld-on male threaded outlets for NPT connections. Available in 1/2" through 10".

Aluminum Weld-On Flanges (APF series) — weld-on flanges for bolted flange connections on aluminum mainlines and pump headers. Available in 2" through 14".

Aluminum Welding Elbows (WE series) — weld-on elbows for permanent directional changes in aluminum pipe systems. Available in two angles:

  • 45-Degree (WE4 series) — gradual directional change, 3" through 12"
  • 90-Degree (WE9 series) — sharp directional change, 3" through 12"

Aluminum Concentric Welding Cones (WC series) — weld-on concentric reducers for transitioning between pipe sizes. Available in 2"x3" through 10"x12".

Cast Aluminum Eccentric Cones (ESA series) — eccentric reducers for pump suction and discharge connections where flat-bottom alignment is required. Available in 1.5"x3" through 3.0"x8".

Need help selecting the right fitting for your fabrication or installation? Call us at 469-844-1294.

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Aluminum Weld-On FittingsSteel & Aluminum

WE9-8 - 8" 90-Degree Aluminum Welding Elbow

WE9-8 - 8" 90 Degree Aluminum Welding Elbow. Weld-on 90 degree elbow for direction changes in 8" aluminum irrigation pipe. Order online from Discount Irrigation - fast shipping on irrigation...
$149.00
Aluminum Weld-On FittingsSteel & Aluminum

APF500 - 5" Aluminum Weld-On Flange

APF500 - 5" Aluminum Weld-On Flange. Weld-on flange for 5" aluminum irrigation pipe connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$90.00
Aluminum Weld-On FittingsSteel & Aluminum

WMT W F 500 - Female End

WMT W F 500 - Female End: Western O-Ring style coupler. Heat treated aluminum female end with “O” ring gasket. Welds to aluminum tubing. Interchangeable with press-on coupler.
$44.00
Aluminum Weld-On FittingsSteel & Aluminum

WMT W M 500 - Male End

WMT W M 500 - Male End. Western O-Ring style coupler. Heat treated male end, drain, 1" riser outlet. Welds to aluminum tubing. Interchangeable with press-on coupler.
$58.00
Aluminum Weld-On FittingsSteel & Aluminum

WE9-10 - 10" 90-Degree Aluminum Welding Elbow

WE9-10 - 10" 90 Degree Aluminum Welding Elbow. Weld-on 90 degree elbow for direction changes in 10" aluminum irrigation pipe. Order online from Discount Irrigation - fast shipping on irrigation...
$156.94
Aluminum Weld-On FittingsSteel & Aluminum

NA400 - 4" Aluminum Half Nipple

NA400 - 4" Aluminum Half Nipple. Short aluminum nipple for 4" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$43.03
Aluminum Weld-On FittingsSteel & Aluminum

APF600 - 6" Aluminum Weld-On Flange

APF600 - 6" Aluminum Weld-On Flange. Weld-on flange for 6" aluminum irrigation pipe connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$99.97
Aluminum Weld-On FittingsSteel & Aluminum

ESA1504 - Cast Aluminum Eccentric Cone 1.5" x 4.0"

ESA1504 - Cast Aluminum Eccentric Cone, 1.5" x 4.0". Eccentric reducer cone for 1.5" to 4" aluminum irrigation pipe transitions. Order online from Discount Irrigation - fast shipping on irrigation...
$49.63
Aluminum Weld-On FittingsSteel & Aluminum

WC8010- Aluminum Concentric Welding Cone, 8" x 10"

WC8010 - Aluminum Concentric Welding Cone, 8" x 10". Heavy duty cast aluminum construction (for fabrication).
$69.65
Aluminum Weld-On FittingsSteel & Aluminum

NA1000 - 10" Aluminum Half Nipple

NA1000 - 10" Aluminum Half Nipple. Short aluminum nipple for 10" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$179.55
Aluminum Weld-On FittingsSteel & Aluminum

NA800 - 8" Aluminum Half Nipple

NA800 - 8" Aluminum Half Nipple. Short aluminum nipple for 8" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$127.58
Aluminum Weld-On FittingsSteel & Aluminum

NA600 - 6" Aluminum Half Nipple

NA600 - 6" Aluminum Half Nipple. Short aluminum nipple for 6" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$77.62
Aluminum Weld-On FittingsSteel & Aluminum

NA500 - 5" Aluminum Half Nipple

NA500 - 5" Aluminum Half Nipple. Short aluminum nipple for 5" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$54.02
Aluminum Weld-On FittingsSteel & Aluminum

NA300 - 3" Aluminum Half Nipple

NA300 - 3" Aluminum Half Nipple. Short aluminum nipple for 3" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$34.61
Aluminum Weld-On FittingsSteel & Aluminum

NA250 - 2-1/2" Aluminum Half Nipple

NA250 - 2-1/2" Aluminum Half Nipple. Short aluminum nipple for 2-1/2" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$35.09
Aluminum Weld-On FittingsSteel & Aluminum

NA200 - 2" Aluminum Half Nipple

NA200 - 2" Aluminum Half Nipple. Short aluminum nipple for 2" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$20.13
Aluminum Weld-On FittingsSteel & Aluminum

NA150 - 1-1/2" Aluminum Half Nipple

NA150 - 1-1/2" Aluminum Half Nipple. Short aluminum nipple for 1-1/2" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$14.38
Aluminum Weld-On FittingsSteel & Aluminum

NA125 - 1-1/4" Aluminum Half Nipple

NA125 - 1-1/4" Aluminum Half Nipple. Short aluminum nipple for 1-1/4" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$9.89
Aluminum Weld-On FittingsSteel & Aluminum

NA100 - 1" Aluminum Half Nipple

NA100 - 1" Aluminum Half Nipple. Short aluminum nipple for 1" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$8.12
Aluminum Weld-On FittingsSteel & Aluminum

NA075 - 3/4" Aluminum Half Nipple

NA075 - 3/4" Aluminum Half Nipple. Short aluminum nipple for 3/4" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$7.38
Aluminum Weld-On FittingsSteel & Aluminum

NA050 - 1/2" Aluminum Half Nipple

NA050 - 1/2" Aluminum Half Nipple. Short aluminum nipple for 1/2" irrigation pipe and fitting connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$7.06
Aluminum Weld-On FittingsSteel & Aluminum

APF1400 - 14" Aluminum Weld-On Flange

APF1400 - 14" Aluminum Weld-On Flange. Weld-on flange for 14" aluminum irrigation pipe connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$590.00
Aluminum Weld-On FittingsSteel & Aluminum

APF1200 - 12" Aluminum Weld-On Flange

APF1200 - 12" Aluminum Weld-On Flange. Weld-on flange for 12" aluminum irrigation pipe connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$210.16
Aluminum Weld-On FittingsSteel & Aluminum

APF1000 - 10" Aluminum Weld-On Flange

APF1000 - 10" Aluminum Weld-On Flange. Weld-on flange for 10" aluminum irrigation pipe connections. Order online from Discount Irrigation - fast shipping on irrigation parts and supplies.
$199.00
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