Manufacturer, Supplier & Exporter of Stainless Steel316 Spool

Stainless Steel 316 Spool is a premium austenitic stainless steel product widely used in industries requiring high corrosion resistance and durability. Riddhi Siddhi Impex, a trusted manufacturer and supplier, specializes in producing high-quality SS 316 spools that conform to international standards and cater to a wide range of industrial applications, including chemical processing, marine, food, and pharmaceutical sectors...

Riddhi Siddhi Impex ensures that each SS 316 spool is manufactured with precision and quality control, maintaining strict adherence to ASTM A312, A213, and A269 standards. Their manufacturing processes include seamless and welded spool fabrication, ensuring reliability and strength in high-pressure and high-temperature environments.

The SS 316 spools supplied by Riddhi Siddhi Impex are known for their excellent resistance to pitting and crevice corrosion, particularly in chloride-rich environments. This makes them ideal for chemical plants, desalination plants, and marine applications where standard stainless steels may fail...

In addition to corrosion resistance, these spools exhibit excellent mechanical properties, including high tensile strength, yield strength, and elongation. This ensures that SS 316 spools maintain structural integrity even under heavy load and thermal stress, making them suitable for critical piping systems and pressure vessels...

Riddhi Siddhi Impex offers SS 316 spools in various sizes, diameters, wall thicknesses, and lengths to meet the specific requirements of diverse industrial applications. Customized finishes, such as 2B, BA, No.4, and mirror finishes, are also available for aesthetic and functional purposes.

Stainless Steel 316 Spool

Specification

Product Name	Stainless Steel 316 Spool
Manufacturer / Supplier	Riddhi Siddhi Impex
Material Grade	Stainless Steel 316 (UNS S31600)
Standard	ASTM A312 / ASTM A213 / ASTM A269
Size Range	1/2” NB to 24” NB (Custom sizes available)
Wall Thickness	Sch 5, 10, 20, 40, 80, 160, XXS
Spool Type	Seamless / Welded / Fabricated Spools
Ends	Beveled End (BE), Plain End (PE), Flanged
Surface Finish	2B, BA, No.4, Mirror, Custom
Applications	Chemical, Petrochemical, Marine, Food Processing, Oil & Gas, Pharmaceutical

Chemical Composition

Element	Content (%)
Carbon (C)	0.08 max
Manganese (Mn)	2.00 max
Phosphorus (P)	0.045 max
Sulfur (S)	0.030 max
Silicon (Si)	1.00 max
Chromium (Cr)	16.0 – 18.0
Nickel (Ni)	10.0 – 14.0
Molybdenum (Mo)	2.0 – 3.0

Mechanical Properties

Property	Value
Tensile Strength	515 MPa min
Yield Strength	205 MPa min
Elongation	40% min
Hardness	95 HRB max
Corrosion Resistance	Excellent, especially against chlorides

Dimension Chart

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

Equivalent Grades

Standard	Equivalent Grade
UNS	S31600
EN	1.4401
JIS	SUS 316
BS	316S31

Equivalent Standards

Standard	Description
ASTM A312	Seamless and Welded Stainless Steel Pipes
ASTM A213	Seamless Stainless Steel Tubes for Boilers & Superheaters
ASTM A269	Welded/Seamless Austenitic Stainless Tubing
EN 10216-5	Seamless Steel Tubes for Pressure Service

Other Types of Stainless Steel Spools

Type	Description
SS 304 Spool	General-purpose stainless steel spool with good corrosion resistance
SS 304L Spool	Low-carbon variant for improved weldability
SS 316L Spool	Low-carbon version of SS 316 with enhanced weld performance
SS 321 Spool	Stabilized stainless steel for high-temperature service

The company has an extensive domestic distribution network in India. They supply SS 316 spools to major cities such as Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, and Nagpur, as well as to secondary cities like Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, and Jodhpur.

Frequently Asked Questions (FAQs)

Q1: What industries commonly use SS 316 Spools?

A1: They are used in chemical processing, marine environments, food processing, oil & gas, and pharmaceuticals.

Q2: Why is molybdenum added to SS 316?

A2: Molybdenum improves resistance to pitting and crevice corrosion, especially in chloride environments.

Q3: Can SS 316 spools withstand high temperatures?

A3: Yes, they perform well at elevated temperatures due to excellent mechanical strength.

Q4: Does Riddhi Siddhi Impex provide custom spool fabrication?

A4: Yes, spools can be made to custom sizes, thicknesses, and configurations.