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Stainless Steel 321/321H Pipe Fittings

Stainless Steel 321 Pipe Fittings are titanium-stabilized austenitic stainless steel fittings designed for enhanced performance in high-temperature applications. These fittings are highly resistant to intergranular corrosion and offer excellent mechanical strength, weldability, and durability, making them suitable for use in various industries including petrochemical, power generation, oil & gas, chemical, and more.
 
At iSteel, we are recognized as one of the most reliable manufacturers and exporters of ASTM A403 WP321 and WP321H Stainless Steel Pipe Fittings in Mumbai, India. Our extensive product range is engineered to deliver high performance even under harsh and demanding operating conditions.
 
Stainless Steel 321/321H Pipe Fittings
 

 What is Stainless Steel 321 & 321H?

SS 321 is an austenitic stainless steel stabilized with titanium (Ti), which improves its resistance to intergranular corrosion, especially after exposure to temperatures in the chromium carbide precipitation range (427°C – 816°C).
 
SS 321H is a high carbon version of SS 321. It is developed for improved creep resistance and higher strength at elevated temperatures, making it suitable for high-pressure, high-temperature environments.
 

 SS 321/321H Pipe Fittings Products Offered

We offer a wide range of SS 321/321H buttweld fittings, manufactured as per ASTM A403 / ASME SA403 standards, including:
SS 321/321H Pipe Fittings Product Range
Product
Type
Grades
Description
Elbow
90°, 45°, LR, SR
SS 321, 321H
Reducing, Seamless, Welded
Tee
Equal, Unequal
SS 321, 321H
Seamless & Welded Tee
Reducer
Concentric, Eccentric
SS 321, 321H
Seamless / Welded
Stub End
Long, Short
SS 321, 321H
Lap Joint / Welded
End Cap
Pipe End Cap
SS 321, 321H
Seamless / Fabricated
Cross
Equal, Reducing
SS 321, 321H
Buttweld & Welded Cross
Pipe Bends
15° – 90° Bends
SS 321, 321H
Custom radius bends available
Collars
Type A, B
SS 321, 321H
Weldable & Seamless
Nipples
Swage, Barrel
SS 321, 321H
Weldable & Fabricated

 

Technical Specification of SS 321/321H Fittings

Specification
Details
Standards
ASTM A403 / ASME SA403
Dimensions
ASME B16.9, B16.28, MSS-SP-43
Sizes
1/8” NB to 48” NB
Schedules
SCH 5S to SCH 160, XXS
Type
Seamless, Welded, Fabricated
Material Grades
UNS S32100 (321), UNS S32109 (321H)
Equivalent Grades
DIN 1.4541 (321), DIN 1.4878 (321H), X6CrNiTi18-10
Testing
PMI, Hydro Test, Radiography, Third Party Inspection

 

 

Key Features of SS 321/321H Pipe Fittings

Features
Excellent resistance to oxidation and corrosion.
Superior strength under high temperature and pressure.
Resists intergranular corrosion after welding.
Smooth finishing and dimensional accuracy.
Easily weldable with conventional processes.
Compliant with international quality standards.
Available in custom sizes and shapes.

 Applications of ASTM A403 WP321/321H Fittings

These pipe fittings are suitable for a broad range of applications including:
 
Oil & Gas Pipelines
Petrochemical Plants
Chemical Processing
Power Generation
Heat Exchangers & Boilers
Fertilizer Industry
Food & Beverage Processing
Architectural & Construction
 

 Global Export Network

We export SS 321 and 321H Pipe Fittings to clients across cities like Mumbai, Pune, Chennai, Rajkot, Ahmedabad, Delhi, Hyderabad, Kolkata, Jaipur, and globally to countries including:
 
United States, UAE, Saudi Arabia, Germany, Canada, Australia, Italy, UK, Malaysia, Singapore, Indonesia, Qatar, South Africa, Brazil, Oman, Iran, Iraq, Bangladesh, Mexico, Spain, Nigeria, and more.

 SS 321/321H Pipe Fittings – Price List

Product
Price Range (USD)
SS 321 Elbow
$1.5 – $2000 / piece
SS 321 Reducer
$0.49 – $123.5 / piece
SS 321 Tee
$0.3 – $600 / piece
SS 321 Pipe Cap
$0.1 – $100 / piece
SS 321 Stub End
$1 – $1000 / piece
SS 321H Bends
$1 – $8800 / piece
SS 321H Nipples
$1 – $100 / piece
SS 321H Collar
$1 – $500 / piece
Prices vary by quantity, size, schedule, and manufacturing process (seamless or welded). For bulk orders and custom fabrication, contact us for best quote.
 

Why Choose Steel for SS 321/321H Pipe Fittings?

Over 20 years of industry experience.
In-house manufacturing and quality control.
Stock availability in standard and non-standard sizes.
Export quality packaging with prompt shipping.
Trusted by engineering companies and EPC contractors worldwide.

Ready to Ship, Wherever You Need Reliable Supplies for your next big project? 

Whether you’re based in India or shipping internationally, we’re here to make sourcing simple. We supply across the USA, Canada, Australia, Germany, Brazil , and the United Kingdom. Fast quotes, custom sizes, and bulk orders available.
 
Let us know what you need—we’ll take care of the rest 
 
Supplies from Different Countries

Supplies from Different Countries

Flag Country Code
🇮🇳 India IN
🇺🇸 United States US
🇬🇧 United Kingdom GB
🇨🇳 China CN
🇯🇵 Japan JP
🇩🇪 Germany DE
🇮🇹 Italy IT
🇹🇷 Turkey TR
🇦🇪 United Arab Emirates AE
🇸🇦 Saudi Arabia SA
🇶🇦 Qatar QA
🇴🇲 Oman OM
🇰🇼 Kuwait KW
🇦🇺 Australia AU
🇨🇦 Canada CA
🇳🇱 Netherlands NL
🇮🇩 Indonesia ID
🇪🇬 Egypt EG