Spools

Manufacturer, Supplier & Exporter of Spools

Riddhi Siddhi Impex stands as a trusted manufacturer and supplier of spools, providing a comprehensive range of pipe spools, fabricated spools, welded spools, and assembled spools tailored for industrial applications. Produced in materials like Stainless Steel (304, 316, 317), Carbon Steel, Alloy Steel, Duplex/Super Duplex, Inconel, Monel, and Titanium, all our spools adhere to global standards including ASTM, ASME, DIN, and JIS. Each spool is precision-engineered with cut pipes, welded joints, flanges, and accessories—ensuring leak-proof, code-compliant assemblies for pipelines, plants, and infrastructure installations.

As a reliable Spools Domastic supplier, Riddhi Siddhi Impex caters to metro centres across India—Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, and Rajkot. Whether clients need quick delivery of standard pipe spools for maintenance turnarounds, or complex multi-leg assemblies for processing units, our well-equipped fabrication units and logistics network ensure fast turnarounds and quality control at every stage.

For project hubs in tier-2 and tier-3 cities—such as Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, and Mangalore—our spools facilitate streamlined installation and reduced field labor. We ship finished spool assemblies in protective packaging, complete with welding and alignment verification, helping fabricators maintain project timelines without compromise.

Industries situated along Gujarat’s Narmada and chemical zones—like Dahej, Ankleshwar, Vilayat, Narmada, Navsari, Valsad, Rajpipla, Somnath, and Surat—rely often on our packaged spool modules for seamless plant execution. As a dedicated Spools Domastic supplier, we accommodate spools with specialized socket-weld, threaded or flanged sections; we also provide pre-installed gaskets, supports, and accessories—optimizing installation speed while maintaining-grade integrity.

Quality assurance is a cornerstone at Riddhi Siddhi Impex. Every spool module undergoes non-destructive welding inspection (MPI/RT/UT), alignment checks, and pressure testing (PIG/pressure test) where needed. We issue detailed documentation packages, including Welding Procedure Specifications (WPS), Welder Qualification Records (WQR), and Material Test Certificates (MTC), making us the preferred Spools Domastic supplier for sectors demanding traceability, safety, and regulatory compliance.

Specifications of Spools

Product	Pipe Spools, Welded Spools, Fabricated Spools, Pre-Assembled Spools
Standards	ASTM, ASME, API, DIN, EN, JIS, IS
Grades	Stainless Steel (304, 316, 321, 347, 904L), Carbon Steel, Alloy Steel, Duplex & Super Duplex, Inconel, Monel, Hastelloy, Titanium
Sizes	1/2” NB – 48” NB (Custom on request)
Types	Butt-Welded Spools, Socket-Weld Spools, Threaded Spools, Flanged Spools
Applications	Refineries, Petrochemicals, Power Plants, Shipbuilding, Process Piping, Offshore Platforms

Chemical Composition (Stainless Steel Spools)

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 Spools (Stainless Steel)

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 Range for Spools

Type	Size Range	Length	End Connection
Pipe Spools	1/2” – 48”	Up to 12 Meters	Butt Weld / Flanged
Fabricated Spools	Custom	As per Design	Butt Weld / Socket Weld / Flanged
Pre-Assembled Spools	As per Project	Module-based	With Fittings & Flanges