Ductile Iron Flanged Pipeline Fittings

Ductile iron flanged fittings are cast pipeline components designed for potable water transmission, sewage pumping mains, and fire protection ring mains. The product range includes short radius elbows, equal tees, concentric reducers, eccentric reducers, and blind flanges. Each fitting is factory applied with internal and external coating to resist corrosion from soil, moisture, and conveyed media.

You already buy our ductile iron pipes. Buy our fittings from the same supplier. Same material. Same coating. Same lining. Same quality. No coordination between different vendors. No dimension mismatches.

These are not brittle grey iron fittings. Ductile iron has 400MPa tensile strength and 15% elongation. The fitting bends before it breaks. It handles pressure surges and ground movement.
Bolts are easy to see and inspect. Remove the fitting without cutting the pipe. Perfect for pump stations, valve connections, and equipment isolation. 

Full Range of Types and Sizes
Need a 90° bend? We have it. Need a concentric reducer? We have it. Need a blind flange to cap a line? We have it. DN50 to DN2000. PN10 to PN40. Standard and custom patterns.

Cement mortar for water. HAC (high alumina cement) for sewage. Epoxy for drinking water. Polyurethane for abrasive sludge. Tell us your pipe lining. We match it exactly.

Pump Stations – Flanged bends and reducers connect pumps to piping. Easy removal for pump maintenance.

Valve Manholes – Flanged tees and crosses connect to valves. Bolted joints allow valve replacement without cutting pipe.

Water Treatment Plants – Complex piping inside buildings. Flanged fittings make assembly fast. Dismantling for modifications is easy.

Wastewater Treatment Plants – HAC lined fittings resist acid from hydrogen sulfide. Polyurethane lined fittings handle abrasive grit.

Industrial Cooling Water Lines – Flanged connections at heat exchangers and cooling towers. Regular maintenance requires disassembly.

Full-Face EPDM Gaskets – 3mm thick rubber. Matches the flange face exactly. One gasket per flange connection.

Flat Ring Gaskets (RF) – For raised face flanges. Standard for EN and ANSI flanges.

Flange Bolt Sets – Carbon steel Grade 8.8 with zinc plating. Includes bolts, nuts, and washers. Correct length for your fitting thickness.

Stainless Steel Bolt Sets – A2 or A4 stainless steel. For corrosive environments or drinking water service.

Threaded Flanges – Flange with internal thread instead of plain bore. Screws onto threaded pipe.

Lapped Flanges – Rotates freely on pipe. Helps align bolt holes when pipe is fixed.

Backing Flanges – For stub ends. Allows use of plastic-lined fittings with ductile iron flanges.

Flange Spreaders – Tool for separating flanges during maintenance. Safe, controlled operation.

Flange Alignment Tools – Pins that help align bolt holes before inserting bolts.

Spacer Rings – For temporary filling of flange gap during maintenance or future expansion.

Hydrostatic Pressure Test – Fill fitting with water. Pressurize to 1.5x rated pressure. Hold for 60 seconds. No water through the casting wall. No porosity. No weeping.

Material Tensile Test – Sample from each melt. Must achieve 400 MPa and 15% elongation. We keep records for each heat number.

Flange Face Inspection – Check flatness and surface finish. Must meet standard requirements. No gouges, no warping, no raised areas.

Lining Thickness Test – Measure at multiple points. Minimum thickness per EN 545 or EN 598. No thin spots allowed.

Lining Adhesion Test – Tap or cross-cut test. Lining must not separate from the iron.

Coating Thickness Test – Magnetic gauge measurement. Minimum 250 microns for epoxy. Even coverage required.

Dimensional Check – Compare to drawing. Bolt circle diameter, number of holes, hole size, face-to-face length. All must match standard.

EN 10204 3.1 certificate (material test report)

Hydrostatic test report (pressure and duration)

Lining thickness report

Coating thickness report

Dimensional inspection report