Ag & Irrigation
Irrigation, Fertilizer, and Anhydrous Ammonia Flange Supply
Agricultural piping covers a wide spread, from large diameter irrigation mains on plate-cut AWWA flanges to anhydrous ammonia service that prohibits carbon steel entirely.
Industry Overview
How Agriculture Piping Actually Looks
Irrigation mains, pump station discharge, and main canal turnouts use forged carbon weld necks and AWWA C207 plate-cut hub flanges. Diameters can be large but pressures are usually modest, keeping cost in line at the volumes ag projects demand. AWWA C207 in SA-516 Gr.70 plate is the typical answer at the larger sizes.
Fertilizer transfer and storage piping varies with the product. Liquid urea, ammonium nitrate solutions, and phosphate slurries each have material implications that change the flange spec. Carbon steel covers some service, stainless covers more, with material selection driven by the chemistry of each specific fertilizer.
Anhydrous ammonia is the strict case. Carbon steel is not permitted in service. Stainless steel forged weld necks and fittings carry the storage and transfer piping at retail dealers, terminals, and application equipment. We supply both the irrigation side and the fertilizer side, forged or plate-cut as the spec requires.
Typical Flange Selections
What We Supply for Agriculture
Carbon Steel Weld Neck
ASME B16.5, A105, Class 150 and 300
Pump station discharge, transfer headers
AWWA C207 Class D
Plate-cut hub flange, 4 to 96 inch
Irrigation mains and lateral turnouts
316 Stainless Weld Neck
ASME B16.5, F316, Class 300
Anhydrous ammonia transfer and storage piping
Blind Flanges
Carbon and stainless, Class 150 to 300
Tank manways, isolation, dead end terminations
Reducing Flanges
A105 carbon steel
Pump connections and header transitions
Material Selection
Common Materials and Why
ASTM A105
Standard forged carbon steel for irrigation and most fertilizer service.
ASTM A182 F316 and F316L
Mandatory for anhydrous ammonia. Also used for aggressive fertilizer chemistries.
ASTM A350 LF2
Cold weather impact testing for northern plains and prairie operations.
SA-516 Gr.70 Plate
Plate-cut AWWA hub flanges for large diameter irrigation at the lowest cost per joint.
Industry Challenges
What Procurement Has to Solve
- 01
Anhydrous ammonia material restriction that disqualifies carbon and requires full stainless.
- 02
Seasonal demand spikes that compress delivery windows around planting and harvest.
- 03
Mixed bolt patterns between AWWA irrigation and ASME process piping on the same project.
- 04
Coating selection for buried service in corrosive soil.
Standards and Codes
Specifications We Quote To
Ready to Quote Agriculture
Seasonal ag work moves fast. Get your bill of materials in early and we will hold the stock for your delivery window.
PO Box 2889, Pearland TX 77588