Flanges

Manufacturer, Supplier & Exporter of Flanges

Riddhi Siddhi Impex is a leading manufacturer and supplier of all types of industrial flanges in India. We specialize in a wide range of flanges including Weld Neck, Slip On, Socket Weld, Blind, Threaded, Lap Joint, Long Weld Neck, and Orifice Flanges. Manufactured in Stainless Steel, Carbon Steel, Alloy Steel, Duplex, Super Duplex, Inconel, Monel, Hastelloy, and Titanium, our flanges meet global quality standards like ASTM, ASME, DIN, EN, BS, and JIS. Every flange is designed with precision to provide leak-proof connections and durability in critical applications such as oil & gas, petrochemicals, refineries, power plants, shipbuilding, and water treatment.

As a trusted flanges Domastic supplier, Riddhi Siddhi Impex ensures consistent availability of high-quality products across India’s major industrial hubs. We cater to clients in Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, and Rajkot with ready stock and customized solutions. Our supply chain network is backed by robust logistics and warehousing, allowing us to deliver both small and bulk orders efficiently, helping industries reduce downtime and maintain smooth operations.

Our reach goes beyond metro cities, serving industries in tier-2 and tier-3 cities such as Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Coimbatore, Madurai, Kochi, Thiruvananthapuram, and Mangalore. Clients in these regions rely on Riddhi Siddhi Impex for authentic flanges with guaranteed dimensional accuracy, corrosion resistance, and high tensile strength. For coastal and port-based industries in Visakhapatnam and Kochi, we provide specialized flanges for marine applications.

Riddhi Siddhi Impex is also an important supplier for industries located in Gujarat’s chemical and process clusters such as Dahej, Vilayat, Ankleshwar, Narmada, Navsari, Valsad, Rajpipla, and Somnath. Our flanges Domastic supplier services ensure timely deliveries for refineries, fertilizer plants, chemical industries, and steel plants in these regions. We provide flanges in pressure classes ranging from 150#, 300#, 600#, 900#, 1500#, to 2500#, with options for raised face (RF), flat face (FF), and ring type joint (RTJ) to suit diverse industrial applications.

For clients seeking a quick local supplier, Riddhi Siddhi Impex is listed as a reliable fittings Domastic supplier covering Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Narmada, Rajpipla and other industrial towns — combining competitive pricing with consistent quality. Our logistics team handles packaging, barcoding, and export documentation, enabling safe deliveries to inland and port locations while tracking each shipment for on-time arrival.

Specifications of Flanges

Product	Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint, Long Weld Neck, Orifice Flanges
Standards	ASTM, ASME, DIN, EN, BS, JIS
Pressure Class	150#, 300#, 600#, 900#, 1500#, 2500#
Facing Types	Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Sizes	½” NB to 48” NB (DN15 – DN1200)
Material	Stainless Steel, Carbon Steel, Alloy Steel, Duplex, Super Duplex, Inconel, Monel, Hastelloy, Titanium

Chemical Composition (Stainless Steel Flanges Example)

Grade	C%	Mn%	Si%	P%	S%	Cr%	Ni%	Mo%
SS 304	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	18.0–20.0	8.0–11.0	-
SS 316	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	16.0–18.0	10.0–14.0	2.0–3.0

Mechanical Properties of Flanges

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HRB)
SS 304	515 min	205 min	40 min	92 max
SS 316	515 min	205 min	40 min	95 max

Dimension Chart for Weld Neck Flanges (ASME B16.5 - Sample)

NPS (inch)	OD (mm)	Thickness (mm)	Bore (mm)	Raised Face Dia (mm)	Number of Bolts
1/2"	89	11	15	35	4
1"	108	12	25	44	4
2"	152	15	51	70	8
4"	229	24	102	114	8
6"	279	26	154	165	8