Stainless Steel 321/321H Pipe Fittings - Ratanex

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.

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