A pipe hanger flange is a cast ductile iron flange plate that supports a pipe from above — the flange face bears against the pipe coupling, end ring, or a flanged connection, and a central (or offset) threaded hole receives the hanger rod. Typical sizes accommodate pipe from 1/2" through 24" nominal diameter, with rated loads defined by casting design and rod size. In effect, it is the pipe-end element of an overhead support chain: the ceiling flange anchors to the structure at the top, the rod spans the drop, and the pipe hanger flange makes the final connection at the pipe.
Its core purpose is clean, adjustable vertical support without wrapping or clamping the pipe barrel. Because the load enters through a flange face rather than a band around the pipe, pipe coatings are untouched, insulation jackets stay intact, and the connection can carry meaningful axial load. Typical uses include supporting vertical drops on their couplings, hanging short horizontal runs at flanged joints, mounting valves and strainer assemblies on their companion flanges, and serving as the base plate of rod-suspended equipment. Cast in ASTM A536 ductile iron, the flange resists cracking at the threaded boss — a known weak point of gray iron and aluminum hanger plates in service.
| Item | Typical Value |
|---|---|
| Material | ASTM A536 65-45-12 / EN-GJS-400-15 or 500-7 |
| Pipe Size Range | 1/2" – 24" nominal pipe; flange OD per connection |
| Rod / Thread Range | 3/8" – 1" threaded rod; UNC standard, metric optional |
| Load Rating | Typical rated load by size, confirmed per drawing |
| Adjustment | Continuous thread engagement for hanging depth |
| Hole Layout | Central or offset threaded hole; bolt-hole circle per drawing |
| Coating | Hot-dip galvanized per ASTM A123 / black paint / epoxy |
| Casting Process | Green sand / resin sand casting |
| Tolerance | ISO 8062; machined faces and threads where specified |
The flange is bolted to the pipe's flanged connection or coupling face, then the rod is threaded up into the boss and leveled. Thread engagement should follow the governing hanger standard. Typical applications include:
Supporting vertical pipe drops at their flanged couplings
Hanging valves, strainers, and metering assemblies on companion flanges
Rod-suspended short horizontal runs where band hangers are impractical
Base flanges for suspended control assemblies and small tanks
Bottom connections of sway-braced hanger assemblies
Where the top of the rod meets concrete or steel structure, pair with our threaded ceiling flange rod; where the run must pivot under bracing, add a sway brace swivel attachment or double groove trunnion clamp.
Flange diameter, thickness, bolt-hole circle, rod-hole position, and thread size are cast to drawing. Integral bosses for double rods, slotted versions for joint alignment, and machined sealing faces are offered. First-article samples support fit-up approval before production.
Threads are gauge-checked; flange faces are inspected for flatness; castings are dimensionally verified to ISO 8062 and traced to the ASTM A536 heat. Galvanized coating thickness is checked per ASTM A123. Parts ship thread-protected in cartons on export pallets.
Does this flange grip the pipe or support it at a joint?
It supports at a flange face or coupling — the pipe barrel is not clamped, which protects coatings and insulation.
Can one flange carry a valve assembly?
Yes, when sized for the combined load; the project engineer confirms the rated load against the assembly weight.
Do you match bolt-hole patterns to our pipe couplings?
Yes — send the coupling drawing and we cast the flange to the same bolt circle.
Ceiling Flange Rod (Threaded) — structure-end counterpart of the hanger chain
Universal Structural Seismic Brace Attachment — seismic anchoring for braced systems
Adjustable Pipe Saddle Support with U-Bolt — floor support counterpart
Double Groove Trunnion Clamp — pivoting connection at braced points
Flange Adapter — mating connection hardware in the same program
Send pipe size, rod size, and bolt-hole pattern — we confirm flange design, rated load, and pricing within one business day. WhatsApp: +86 185 6156 7088 for drawings and samples.
Need a formal quotation? Send your Pipe Hanger Flange drawing, quantity and target price through our quotation request form — it goes straight to the foundry inbox, and we reply with a priced offer, material certificate draft and production lead time within one business day.
Professional technical research and development team to provide customers with the best solution.
Jimo District, Qingdao City, Shandong Province, China
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