Manufacturer, Supplier & Exporter of Hastelloy C22 Spool

Hastelloy C22 Spool is one of the most reliable and corrosion-resistant alloy spool products used in highly demanding chemical, petrochemical, and pollution-control applications. Manufactured and supplied by Riddhi Siddhi Impex, these spools are engineered from high-performance nickel-chromium-molybdenum alloy known for its excellent resistance to oxidizing and reducing environments. Hastelloy C22 is particularly preferred in industries where aggressive chemicals, mixed acid solutions, or chloride-rich atmospheres are present...

Riddhi Siddhi Impex is recognized as a trusted Hastelloy C22 Spool Manufacturer and Supplier in India, delivering precision-fabricated spools that meet international specifications such as ASTM B622, B626, and ASME standards. Our spools are widely used in piping systems requiring exceptional durability, leak-free flow, and long service life. With a strong focus on quality assurance, every spool undergoes dimensional checks, PMI testing, NDT, and hydro-testing to ensure reliable performance.

One of the major benefits of Hastelloy C22 Spool is its outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking, even in harsh chloride environments. This makes it suitable for flue-gas scrubbers, waste treatment plants, pharmaceutical sterilization systems, desalination projects, and chemical reactors. The presence of chromium and molybdenum enhances stability at high temperatures and under cyclic thermal conditions, making it a top choice for chemical process equipment...

Riddhi Siddhi Impex supplies Hastelloy C22 Spools across major Indian domestic cities, ensuring timely delivery and competitive pricing. Our supply network covers Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru, Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, Rajpipla, and other industrial clusters..

Each Hastelloy C22 Spool offered by Riddhi Siddhi Impex is fabricated according to customer drawings and requirements. Whether the project demands seamless spools, welded spools, long-radius bends, flanged spools, or special fabrication designs, our engineering team ensures high dimensional accuracy and stable performance under corrosive and thermal stress. This adaptability makes our products suitable for large-scale process piping networks and project-based engineering applications..

Hastelloy C22 Spool

Specification

Product Name	Hastelloy C22 Spool
Manufacturer / Supplier	Riddhi Siddhi Impex
Material Grade	Hastelloy C22 (UNS N06022)
Equivalent Standards	ASTM B622 / ASTM B626 / ASME SB622 / SB626
Forms Available	Seamless Spool, Welded Spool, Fabricated Spools
Size Range	1/2" NB to 24" NB (custom sizes available)
Wall Thickness	Sch 5 to Sch XXS
Length	Single Random, Double Random, or Custom Cut Length
Temperature Range	Up to 1100°C (oxidizing environments)
Applications	Chemical processing, seawater systems, pharmaceutical equipment, pollution control, reactors

Chemical Composition (wt%)

Element	Content (%)
Nickel (Ni)	Balance
Chromium (Cr)	20.0 – 22.5
Molybdenum (Mo)	12.5 – 14.5
Iron (Fe)	2.0 – 6.0
Tungsten (W)	2.5 – 3.5
Cobalt (Co)	2.5 max
Manganese (Mn)	0.5 max
Silicon (Si)	0.08 max
Carbon (C)	0.01 max

Mechanical Properties

Property	Value
Tensile Strength	690 MPa (min)
Yield Strength (0.2%)	283 MPa (min)
Elongation	45% (min)
Hardness	Rockwell B 95 (max)
Density	8.69 g/cm³

Dimension Chart (Typical)

NPS (Inch)	Outside Diameter (mm)	Wall Thickness (mm)	Length
1/2"	21.34	2.77	Up to 6–12 m
1"	33.40	3.38	Up to 6–12 m
2"	60.33	3.91	Up to 6–12 m
4"	114.30	6.02	Up to 6–12 m
6"	168.28	7.11	Up to 6–12 m
10"	273.05	9.27	Up to 6–12 m
16"	406.40	12.70	Up to 6–12 m

Equivalent Grades

Standard	Equivalent Grade
UNS	N06022
Werkstoff Nr.	2.4602
EN	NiCr21Mo14W
JIS	NW 6022

Equivalent Standards

Standard	Description
ASTM B622	Seamless pipes & tubing
ASTM B626	Welded pipes & tubes
ASME SB622	Pressure vessel piping
ASME SB626	Welded pressure piping

Other Types of Nickel Alloy Spools

Material	Description
Hastelloy C276 Spool	Superior corrosion resistance in chemical plants and offshore systems
Hastelloy B2 Spool	Excellent for reducing acid environments
Inconel 625 Spool	High strength and chloride resistance
Incoloy 825 Spool	Resistant to sulfuric and phosphoric acids
Monel 400 Spool	Excellent performance in seawater and marine operations

The alloy’s unique chemical composition, containing nickel, chromium, molybdenum, and tungsten, provides superior resistance to oxidizers like ferric and cupric chlorides, hot contaminated solutions, organic and inorganic acids, and seawater environments. Unlike many standard stainless steels or duplex alloys, Hastelloy C22 performs exceptionally even in environments where both oxidizing and reducing conditions alternate during processing operations..

Frequently Asked Questions (FAQs)

Q1: Where is Hastelloy C22 Spool commonly used?

A1: It is widely used in chemical processing plants, seawater equipment, pollution control units, pharmaceutical reactors, and high-corrosion environments.

Q2: Do you provide custom fabrication for Hastelloy C22 spools?

A2: Yes, Riddhi Siddhi Impex offers custom spool fabrication based on drawings, sizes, fittings, and project requirements.

Q3: What testing is provided?

A3: PMI testing, hydrostatic test, NDT, radiography, and MTC (EN 10204 3.1) are provided upon request.

Q4: Do you supply Hastelloy C22 spools across India?

A4: Yes, we supply across major cities including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, and many more industrial regions.