Manufacturer, Supplier & Exporter of Stainless Steel316L Spool

Stainless Steel 316L Spool is an industrial product widely used in piping, instrumentation, chemical processing, and fluid-transfer applications because of its exceptional corrosion resistance and durability. The 316L grade, being the low-carbon variant of SS316, offers superior protection against pitting and crevice corrosion, especially in chloride-rich or marine environments. These spools ensure smooth flow of gases and liquids due to their precision fabrication and seamless or welded construction. For industries that demand consistent performance under harsh conditions—such as petrochemical refineries, pharmaceuticals, desalination plants, and offshore structures—SS316L Spool remains a preferred choice due to its mechanical stability, weldability, and longevity...

Riddhi Siddhi Impex is a recognized name in the Indian stainless-steel industry, known for manufacturing, stocking, and supplying high-quality Stainless Steel 316L Spools. With decades of metal industry experience, the company maintains advanced production and inspection facilities that ensure their SS316L spools meet stringent national and international quality standards. Their spools are manufactured using premium raw materials, high-precision machinery, and controlled finishing processes, which guarantee uniform thickness, smooth surfaces, accurate dimensions, and long-term reliability. Their customer-focused approach has allowed them to become a trusted brand among engineering firms, fabricators, and process-industry buyers..

One of the major strengths of Riddhi Siddhi Impex is its ability to provide customized Stainless Steel 316L Spool solutions. Depending on application requirements, clients can request variations in spool diameter, length, wall thickness, bending radius, and end-connection configurations such as flanged ends, threaded ends, weld ends, or special fittings. This customization ensures compatibility with existing piping lines and makes installation easy. Their engineering team also assists in selecting the correct spool specifications based on pressure rating, temperature conditions, and industrial standards, ensuring that customers receive a safe and technically suitable product..

Riddhi Siddhi Impex places strong emphasis on quality assurance. Each Stainless Steel 316L Spool undergoes strict testing procedures, including hydraulic pressure testing, dimensional inspection, surface finish checks, PMI (Positive Material Identification), and documentation verification. Material Test Certificates (MTCs) as per EN 10204 standards are also provided to ensure complete traceability. With such well-designed quality protocols, the company ensures that every spool delivered to customers is defect-free, durable, and ready for performance in demanding operational environments. This commitment to excellence differentiates the brand from ordinary distributors in the market..

Industries across India rely heavily on Stainless Steel 316L Spools for demanding applications. In chemical processing plants, these spools maintain integrity when handling corrosive fluids. In the pharmaceutical and food industries, the 316L grade provides hygienic, contamination-free flow channels. In marine and offshore projects, its resistance to saltwater corrosion makes it indispensable. Even in high-temperature operations such as power plants, refineries, and energy-sector pipelines, SS316L spools deliver stable performance due to their excellent thermal resistance. This wide applicability ensures continuous demand across both heavy as well as precision-oriented industries.

Stainless Steel 316L Spool

Specification

Product Name	Stainless Steel 316L Spool
Manufacturer / Supplier	Riddhi Siddhi Impex
Material Grade	Stainless Steel 316L (Low Carbon)
Standards	ASTM A312 / A213 / A269 / ASME SA312
Size Range	1/2” NB to 24” NB (Custom Sizes Available)
Wall Thickness	Sch 10, Sch 20, Sch 40, Sch 80, Sch 160, XXS
Spool Type	Welded Spool, Fabricated Spool, Custom Pipe Spool
End Connections	Flanged, Beveled End, Plain End, Threaded (As Required)
Finish	Mill Finish, Polished, Pickled & Passivated
Applications	Chemical Plants, Food Processing, Marine Piping, Oil & Gas Systems, Pharmaceutical Lines

Chemical Composition (SS 316L)

Element	Content (%)
Carbon (C)	0.03 Max
Manganese (Mn)	2.00 Max
Phosphorus (P)	0.045 Max
Sulfur (S)	0.03 Max
Silicon (Si)	0.75 Max
Chromium (Cr)	16.0 – 18.0
Nickel (Ni)	10.0 – 14.0
Molybdenum (Mo)	2.0 – 3.0
Nitrogen (N)	0.10 Max

Mechanical Properties

Property	Value
Tensile Strength	≥ 485 MPa
Yield Strength (0.2% offset)	≥ 170 MPa
Elongation	≥ 40%
Hardness	≤ 95 HRB
Corrosion Resistance	Excellent in Chloride & Marine Environments
Weldability	Superior (Low Carbon Reduces Sensitization)

Dimension Chart (Nominal)

Nominal Pipe Size (NB)	Outside Diameter (mm)	Wall Thickness (mm)	Spool Length
1/2"	21.3	2.77	Custom Length
1"	33.4	3.38	Custom Length
2"	60.3	3.91	Custom Length
4"	114.3	6.02	Custom Length
6"	168.3	7.11	Custom Length
10"	273.1	9.27	Custom Length
16"	406.4	12.70	Custom Length

Equivalent Grades

Standard	Grade
ASTM	316L / UNS S31603
EN	1.4404 / 1.4435
JIS	SUS 316L
ISO	316L
BS	316S11 / 316S12

Equivalent Standards

Standard	Description
ASTM A312	Seamless and Welded Austenitic Stainless Steel Pipes
ASTM A213	Seamless Austenitic Tubes for Heat Exchangers
ASME SA312	Pressure Piping Stainless Steel Specification
EN 10216-5	Seamless Stainless Steel Tubes for Pressure Service

Other Types of Stainless Steel Pipe Spools

Type	Description
Stainless Steel 304 Spool	General-use stainless spool for moderate corrosion environments
Stainless Steel 316 Spool	Mo-bearing spool suitable for harsh conditions
Duplex Steel Spool	High-strength duplex alloy spool for aggressive chemical services
Super Duplex Spool	Maximum corrosion resistance for extreme offshore and chemical plants
Nickel Alloy Spool	Special alloy spool for high-temperature and acidic applications

Riddhi Siddhi Impex is a dominant Stainless Steel 316L Spool Domestic Supplier across key Indian industrial cities. Their supply network covers Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, and Rajpipla. Their ability to supply across such a vast geographical range ensures quick delivery, smooth logistics, and reliable service for small and large-scale buyers alike..

Q1: What are the common applications of Stainless Steel 316L Spool?

A1: Stainless Steel 316L Spools are widely used in chemical processing, pharmaceuticals, food industries, oil & gas pipelines, marine environments, desalination plants, and high-temperature or corrosive fluid transfer systems.

Q2: Do you offer customized Stainless Steel 316L Spool sizes?

A2: Yes, we provide customized spools in various diameters, lengths, wall thicknesses, and end-connection types based on project and industrial requirements.

Q3: Is Stainless Steel 316L corrosion-resistant?

A3: Yes, SS 316L is highly corrosion-resistant, especially against chlorides, chemicals, and marine exposures. Its low-carbon composition enhances resistance to pitting and crevice corrosion.

Q4: What are the benefits of using 316L grade over standard 316?

A4: The 316L grade contains lower carbon content, providing better weldability, reduced risk of carbide precipitation, improved corrosion resistance, and enhanced performance in aggressive environments.

Q5: Do you supply Stainless Steel 316L Spools across India?

A5: Yes, we supply SS 316L Spools to major Indian cities including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Jaipur, Coimbatore, Visakhapatnam, and many more industrial hubs.