Indus Industrial Group supplies heavy-duty Fabricated Steel Bellows and Dismantling Expansion Joints engineered in nominal diameters from DN200 (8") to DN2200 (88") in pressure ratings PN10, PN16, PN25, and PN40. Conforming to EN 545, AWWA C219, and EJMA standards, these high-capacity pipeline expansion fittings feature multi-convolution AISI 316Ti stainless steel bellows or three-flange telescopic dismantling bodies with full-span high-tensile tie rods. Designed for high-pressure pump discharge headers, transmission pipeline valve chambers, and thermal expansion relief in water treatment infrastructure across Iraq.
| Pricing Verification | Commercial Quote on Demand (RFQ) |
| Nominal Diameters | DN200 to DN2200 (8" to 88") Flanged Pipeline Sizes |
| Pressure Ratings | PN10 (10 Bar), PN16 (16 Bar), PN25 (25 Bar), PN40 (40 Bar) |
| Flange Drilling Standard | EN 1092-1 / EN 1092-2 PN10/PN16/PN25/PN40 (Optional ANSI B16.47) |
| Axial Travel Adjustment | ± 25mm to ± 100mm longitudinal telescopic adjustment |
| Body Steel Material | Fabricated Carbon Steel ASTM A516 Gr. 70 / ASTM A105 / SS316 |
| Bellows Flexible Core | Multi-Ply Stainless Steel AISI 316L / AISI 316Ti (tested per EJMA) |
| Tie Rod Assembly | Grade 8.8 High-Tensile Steel Galvanized / Stainless Steel AISI 316 Tie Bars |
| Elastomeric Sealing | Continuous EPDM / NBR Lip Gasket (WRAS approved) |
| Corrosion Coating | Heavy Two-Pack Liquid Epoxy or Fusion-Bonded Epoxy min 300 μm |
| Governing Standards | AWWA C219 / EN 545 / ISO 2531 / EJMA 10th Edition |
| Sector & Division | Water & Wastewater (Div 01) |
| Parent Category | Wide-Tolerance Couplings & Restraint Adapters |
Water transmission valve chambers, high-lift pumping station discharge headers, treatment plant manifold isolation, and river intake pump houses in Baghdad, Basra, Erbil, Sulaymaniyah, and Wasit.
High-capacity municipal water pumping stations, transmission pipeline valve vaults, and intake manifold installations experience severe mechanical stress: axial thermal expansion/contraction cycles from day-to-night temperature swings (up to 30°C delta in desert regions), pump vibration transmission, and the logistical challenge of installing or removing heavy flanged valves. Indus Fabricated Steel Bellows and Dismantling Expansion Joints provide the definitive mechanical solution.
Our telescopic dismantling joints utilize a three-flange design comprising a flanged spigot, an intermediate flanged sleeve, and a loose companion flange. High-tensile steel tie rods span across the entire assembly. During maintenance, tightening the tie rods compresses the telescopic sleeve by up to 50mm to 100mm, creating an immediate axial clearance that allows heavy butterfly valves, check valves, or flow meters to be lifted out vertically without stressing adjacent rigid pipeline walls.
For pipelines requiring continuous axial, lateral, or angular thermal movement absorption, our metallic expansion bellows feature multi-ply deep-convolution AISI 316L or 316Ti stainless steel flexible cores protected by external carbon steel shroud sleeves and limit rods. Fabricated from certified pressure-vessel grade carbon steel (ASTM A105 / A516 Gr. 70) and coated with 300 microns of fusion-bonded epoxy, these units operate reliably up to 40 Bar. Staged at our Erbil and Basra engineering yards.
Rigid flanged pipes allow zero axial movement. A dismantling joint provides up to 50mm–100mm of telescopic collapse space by loosening its tie rods, allowing workers to easily slide out large valves for maintenance without dismantling long pipe sections.
Yes. Our dismantling joints are fully restrained. The full-span Grade 8.8 tie rods are engineered to transfer 100% of the internal hydrostatic end-thrust safely across the joint, preventing pipeline pull-out.
Yes. When configured with multi-ply stainless steel bellows or elastomeric spherical expansion joints, they isolate pump motor vibration and prevent acoustic resonance from traveling into transmission pipelines.
