Manufacturer, Supplier & Exporter of Ductile Iron Socket & Spigot Fittings
Ductile Iron Socket & Spigot Fittings are an essential category of pipe fittings widely used in water supply, drainage, and sewage pipeline systems. These fittings allow for a flexible yet leak-proof connection using a socket (female end) and a spigot (male end), which is typically sealed using a rubber gasket. The socket & spigot design offers ease of installation, mechanical flexibility, and superior hydraulic performance in underground and above-ground pipeline networks. Their use is particularly common in Ductile Iron pipelines where movement due to ground settlement or temperature change is expected.
Riddhi Siddhi Impex is a well-known and trusted manufacturer and supplier of Ductile Iron Socket & Spigot Fittings in India. With a state-of-the-art manufacturing facility, the company produces a wide range of socket and spigot fittings including bends, tees, collars, reducers, and end caps. Their products comply with international quality standards such as IS 8329, ISO 2531, EN 545, and EN 598, ensuring they are suitable for both municipal and industrial applications. Riddhi Siddhi Impex is committed to high performance, long-lasting durability, and precise engineering in every fitting produced.
As a leading Ductile Iron Socket & Spigot Fittings Domastic supplier, Riddhi Siddhi Impex has a strong presence in key Indian cities such as Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, and Kolkata. These metro regions, known for their rapid infrastructure growth and urban water management projects, demand reliable and scalable piping solutions. The company fulfills this demand with ready stock availability and efficient supply chains, serving government water boards, private contractors, and infrastructure developers.
Beyond the metro cities, the company serves important industrial and Tier-II markets including Pune, Ahmedabad, Surat, Vadodara, Rajkot, and Nagpur. These areas have active civic development, smart city projects, and industrial parks that rely heavily on quality ductile iron fittings. Riddhi Siddhi Impex provides customized fittings for different pressure classes (PN10 to PN40), offering a tailor-made solution for varying site conditions and project specifications.
The company’s reach extends to central and northern India as well, including cities like Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, and Varanasi. These regions often have legacy infrastructure and are currently undergoing upgrades in water and waste systems. The push-fit socket & spigot system allows for easy integration with existing pipelines, saving time and labor costs, which has made these fittings a preferred choice among municipal engineers and consultants.
Ductile Iron Socket & Spigot Fittings – Technical Specifications
1. Specifications
| Parameter | Details |
|---|---|
| Material | Ductile Iron (DI) |
| Manufacturing Standard | IS 8329, ISO 2531, EN 545, EN 598 |
| Joint Type | Push-on Socket & Spigot with Rubber Gasket |
| Pressure Rating | PN10, PN16, PN25, PN40 |
| Coating | Bitumen, Fusion Bonded Epoxy, or PE Coated |
| Application | Water supply, drainage, irrigation, and sewage systems |
2. Chemical Composition
| Element | Typical Range (%) | Standard |
|---|---|---|
| Carbon (C) | 3.5 – 4.0% | ISO 1083 |
| Silicon (Si) | 1.8 – 2.8% | ISO 1083 |
| Manganese (Mn) | 0.2 – 0.6% | ISO 1083 |
| Phosphorus (P) | ≤ 0.06% | ISO 1083 |
| Sulfur (S) | ≤ 0.03% | ISO 1083 |
| Magnesium (Mg) | 0.03 – 0.06% | ISO 1083 |
3. Mechanical Properties
| Property | Value | Standard |
|---|---|---|
| Tensile Strength | ≥ 420 MPa | IS 8329, ISO 1083 |
| Yield Strength | ≥ 300 MPa | IS 8329, ISO 1083 |
| Elongation | ≥ 10% | IS 8329, ISO 1083 |
| Hardness | 180 – 230 HB | ISO 6506 |
4. Dimension Chart (Typical Sizes)
| Nominal Diameter (DN) | Outer Diameter (mm) | Socket Length (mm) | Spigot Length (mm) |
|---|---|---|---|
| DN 80 | 98.9 | 140 | 130 |
| DN 100 | 118.0 | 150 | 140 |
| DN 150 | 170.0 | 170 | 160 |
| DN 200 | 222.0 | 190 | 180 |
| DN 250 | 274.0 | 210 | 200 |
| DN 300 | 326.0 | 230 | 220 |
5. Equivalent Grades & Standards
| Standard | Grade | Description |
|---|---|---|
| IS 8329 | DI 500-7 | Indian standard for ductile iron pipe & fittings |
| ISO 1083 | EN-GJS-500-7 | Global standard for ductile iron castings |
| EN 545 | EN-GJS-450-10 | European standard for potable water pipelines |
| ASTM A536 | 65-45-12 | US standard for ductile iron castings |
6. Other Types of Ductile Iron Fittings
| Type | Application |
|---|---|
| Ductile Iron Flanged Fittings | For bolted pipeline connections |
| Ductile Iron Collar | Used to join plain-end pipes |
| Ductile Iron Reducers | Used for varying pipe diameters |
| Ductile Iron Bends | Changes direction of flow |
| Ductile Iron End Cap | Closes end of pipeline |
With an efficient logistic network and stocking points across Navsari, Valsad, Rajpipla, Narmada, Amritsar, Chandigarh, Jodhpur, and Udaipur, Riddhi Siddhi Impex ensures quick turnaround times and project-ready deliveries. Their technical team assists customers with site-specific recommendations and support in choosing the correct class and size of fittings. As a domestic supplier, they bridge the gap between international quality and Indian project needs at competitive pricing.
Frequently Asked Questions (FAQs)
- Q1: What is a socket & spigot joint in ductile iron pipes?
- A: It's a push-fit joint where the spigot end of one pipe fits into the socket of another, sealed with a rubber gasket for leak-free connection.
- Q2: Are these fittings suitable for underground installation?
- A: Yes, they are ideal for underground water, sewage, and stormwater systems due to flexibility and corrosion resistance.
- Q3: What pressure ratings are available?
- A: Ductile iron socket & spigot fittings are available in PN10, PN16, PN25, and PN40 pressure classes.
- Q4: Do these fittings require welding or threading?
- A: No, socket & spigot joints use a gasket system and do not require welding or threading, making installation quicker and safer.