Stainless Steel 304 Fittings

Q: What is the difference between ASTM A403 WP304 and WP304L fittings?

WP304 fittings have a maximum carbon content of 0.08 percent. WP304L is limited to 0.035 percent carbon. The lower carbon in 304L prevents carbide precipitation during welding, making 304L the preferred choice for heavy-gauge welded assemblies where post-weld annealing cannot be applied.

Q: What sizes are available for SS 304 pipe fittings?

Solitaire Overseas supplies seamless SS 304 fittings from 1/2 inch to 10 inch NB and welded fittings from 1/2 inch to 48 inch NB, covering schedules SCH 10 through SCH XXS as per ASME B16.9.

Q: Which standards do your SS 304 pipe fittings comply with?

Our 304 stainless steel pipe fittings conform to ASTM A403 / ASME SA403 with dimensions per ASME B16.9, ASME B16.28, MSS-SP-43, and international standards including DIN, JIS, GOST, and EN 10253-2. Each fitting is supplied with an EN 10204/3.1 material test certificate.

Q: Can SS 304 fittings be used in food and pharmaceutical applications?

Yes. Grade 304 stainless steel is FDA-compliant and non-reactive with most food-grade fluids, making it standard for process piping, CIP systems, and storage vessels in food, beverage, dairy, and pharmaceutical facilities. For aggressive CIP environments, 316L is recommended.

Q: What is the maximum operating temperature for SS 304 pipe fittings?

SS 304 fittings are rated for continuous service up to 925 degrees C (1697 degrees F) and intermittent service up to 870 degrees C (1598 degrees F). For cryogenic applications, 304 stainless retains adequate toughness down to negative 196 degrees C.

Why Engineers Choose Solitaire Overseas for SS 304 Pipe Fittings

Solitaire Overseas is a manufacturer and exporter of ASTM A403 WP304/WP304L certifiable Stainless Steel 304 Pipe Fittings manufactured in Mumbai, India and imports to 50 or more countries throughout the Middle East, Europe and Southeast Asia. In 2000, we developed 304 SS pipe fittings, such as elbows, tees, reducers, and caps, which are of ASME B16.9 dimensions and are offered in seamless and welded construction in 1/2 inch to 48 inch. All fittings are accompanied with EN 10204/3.1 mill test certificate and third party inspection report.

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What are Stainless Steel 304 Pipe Fittings?
Stainless Steel 304 Fittings Specifications
Stainless Steel 304 Pipe Fittings Chemical Composition
304 Stainless Steel Pipe Fittings Mechanical Properties
Equivalent Grades of SS 304 Fittings
Stainless Steel 304 Pipe Fittings Thickness Chart
Stainless Steel 304 Fittings HS Code
Types Of Stainless Steel 304 Pipe Fittings

What are Stainless Steel 304 Pipe Fittings?

Stainless Steel 304 Pipe Fittings (SS 304 Pipe Fittings): The most widely used 18/8 stainless grade, performing reliably across a broad range of atmospheric and chemical service environments.

Stainless Steel 304L Pipe Fittings (SS 304L Pipe Fittings): The low-carbon variant (0.03 percent C max), engineered to prevent carbide precipitation at weld heat-affected zones. This eliminates the risk of intergranular corrosion in heavy-gauge welded assemblies where post-weld annealing is not feasible.

All SS 304 Fittings conform to the ASTM A403 standard, designated WP304/WP304L, confirming their suitability for pressure piping service. Our range includes SS 304 Elbows, SS 304 Reducers, SS 304 Pipe Caps, and Buttweld Tees.

Beyond Stainless Steel 304 Pipe Fittings, Solitaire Overseas supplies a complete range of piping products including Stainless Steel Buttweld Fittings and high-pressure Stainless Steel Forged Fittings. View our full Stainless Steel Fittings range. For chloride and marine service environments, see our Stainless Steel 316 Pipe Fittings.

Stainless Steel 304 Fittings Specifications

We manufacture our SS 304 Fittings in strict compliance with global quality and dimensional standards. The table below details the key specifications governing our product range.

Specification	Details
Specifications	ASTM A403 / ASME SA403
Dimensions	ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS1560, BS10, ASME B16.11, MSS SP-79, 83, 95, 97, BS 3799
Size	Seamless Fittings: 1/2 inch to 10 inch \| Welded Fittings: 1/2 inch to 48 inch
Thickness	SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Manufacturing Standards	ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 \| DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011, DN15 to DN1200 \| BS: BS4504, BS1560, BS10 \| JIS: JIS B2311, JIS B2312, JIS B2313, JIS B2316 \| GOST: GOST 17375, 17376, 30753, 17378, 17379, 17380 \| EN: EN10253-1, EN10253-2
Types	Seamless / ERW / Welded / Fabricated
Connection	Welding
Bending Radius	R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Bending Methods	Roll bending / Rotary draw bending / Hot induction bending / Ram type bending / Mandrel bending
Elbow	Angle: 22.5 deg, 30 deg, 45 deg, 90 deg, 180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D to 40D \| Standard: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75, DIN2605, JISB2311, JISB2312, JISB2313, BS, GB, ISO
Manufacturing Process	Push, Press, Forge, Cast
Specialised Manufacturer of	90 deg Elbows, Couplings, Reducers, Inserts, Caps, Nipples, 45 deg Elbows, Tees, Crosses, Equal Tees and Reducing Tees
Working Temperature	Continuous service: 925 deg C (1697 deg F) \| Intermittent service: 870 deg C (1598 deg F)
Heat Treatment	Solution annealing at 1010 to 1120 deg C, water quenched
Hardness	Brinell (HB) max: 201 \| Rockwell B (HRB) max: 92
Packaging	Carton box / wooden case / wooden pallet, marked with grade, heat number, and dimensions per customer requirement
Test Certificates	EN 10204/3.1B Raw Materials Certificate \| 100% Radiography Test Report \| Third Party Inspection Report \| MTC EN 10204 3.1/3.2 available

Stainless Steel 304 Pipe Fittings Chemical Composition

The exceptional corrosion resistance of our 304 Pipe Fittings is derived from a precisely controlled chemical composition. This balanced alloy structure ensures superior performance characteristics across a wide range of service environments.

Grade	C	Mn	Si	P	S	Cr	Ni
SS 304	0.08 max	2 max	0.75 max	0.045 max	0.030 max	18 to 20	8 to 11
SS 304L	0.035 max	2 max	0.75 max	0.045 max	0.030 max	18 to 20	8 to 12

304 Stainless Steel Pipe Fittings Mechanical Properties

Engineered for strength and durability, our 304 Stainless Steel Pipe Fittings guarantee structural integrity under demanding industrial conditions.

Grade	Density	Melting Point	Tensile Strength	Yield Strength (0.2% Offset)	Elongation	Hardness
304	8.0 g/cm3	1400 deg C (2550 deg F)	PSI 75000 / MPa 515	PSI 30000 / MPa 205	35 percent	HB max 201 / HRB max 92

Equivalent Grades of SS 304 Fittings

To support international projects and procurement, our SS 304 Fittings conform to several major global standards. Use this table to identify equivalent grades across different systems.

Standard	Werkstoff Nr.	UNS	JIS	BS	GOST	AFNOR	EN
SS 304	1.4301	S30400	SUS 304	304S31	08X18H10	Z7CN18-09	X5CrNi18-10

ASTM A403 WP304 Grade Classes and Product Marking

Procurement engineers and quality teams can use the following tables to verify fitting class designations against material test certificates (MTCs).

WP Class Reference

Class	Non-Destructive Examination	Construction
WU	Ultrasonic	Welded
WX	Radiography	Welded
W	Ultrasonic or Radiography	Welded
S	None	Seamless

Product Marking Examples for SS 304 Welded Fittings

Class and Grade Marking	Description
WP304-S	Single grade, seamless (SMLS)
WP304-W	Single grade, welded with UT or RT on pipe welds
WP304-WX	Single grade, welded with radiography on all welds without and with filler metal
WP304-WU	Single grade, welded with ultrasonic on all welds without and with filler metal

SS 304 Pipe Fittings Weight Chart (Theoretical Weights in kg)

Accurate weight data is essential for project logistics and engineering design. The table below covers Schedule 10S, 40S, and 80S for 90 degree elbows, 45 degree elbows, and equal tees.

DN	SCH10S 90 Elbow	SCH10S 45 Elbow	SCH10S Equal Tee	SCH40S 90 Elbow	SCH40S 45 Elbow	SCH40S Equal Tee	SCH80S 90 Elbow	SCH80S 45 Elbow	SCH80S Equal Tee
8	0.02	0.01	0.03	0.03	0.02	0.06	0.04	0.03	0.07
10	0.03	0.02	0.05	0.03	0.02	0.03	0.06	0.04	0.09
15	0.06	0.03	0.09	0.08	0.04	0.10	0.10	0.05	0.14
20	0.07	0.03	0.13	0.08	0.04	0.17	0.11	0.05	0.20
25	0.14	0.08	0.28	0.15	0.11	0.29	0.22	0.14	0.38
32	0.23	0.11	0.49	0.26	0.17	0.59	0.40	0.23	0.68
40	0.30	0.17	0.68	0.40	0.23	0.86	0.51	0.29	1.02
50	0.50	0.25	0.85	0.70	0.40	1.28	0.91	0.59	1.59
65	0.85	0.48	1.41	1.40	0.77	2.19	1.81	0.99	3.13
80	1.25	0.63	1.77	2.20	1.08	3.31	2.97	1.50	4.45
90	1.70	0.75	2.67	2.83	1.42	4.08	4.00	2.00	5.44
100	2.10	1.08	3.46	4.47	2.09	5.27	6.18	2.81	7.71
150	5.45	2.72	8.07	10.89	5.44	10.99	16.32	8.16	13.61
200	10.20	5.33	15.65	21.54	10.77	20.91	33.11	16.56	28.12
250	18.15	9.75	26.46	38.56	19.27	35.38	51.71	25.86	49.90
300	25.80	13.62	39.46	59.42	29.71	62.14	79.38	39.69	83.91

Stainless Steel 304 Fittings HS Code

For smooth and compliant international trade, the correct Harmonized System (HS) code is essential.

Properties	Values
HS Code	73072900

Types Of Stainless Steel 304 Pipe Fittings

We offer a comprehensive selection of SS 304 Pipe Fittings, each designed for a specific function within your piping system. Explore the various types available to meet your connection needs.

SS 304 90 Degree Elbow ASTM A403 WP304 Buttweld Fitting

SS 304 Elbow

SS 304 Pipe Elbow
UNS S30400 90 Degree Elbow
DIN 1.4301 45 Degree Pipe Elbow
ANSI B16.9 SS 304 Buttweld Elbow

SS 304 Concentric Reducer ASME B16.9 Stainless Steel Pipe Fitting

SS 304 Reducer

SS 304 Buttweld Concentric Reducer
UNS S30400 Reducers
DIN 1.4301 Buttweld Eccentric Reducer
ANSI B16.9 SS 304 Buttweld Reducers

SS 304 Buttweld Equal Tee ASTM A403 WP304 Stainless Steel Tee

SS 304 Tees

SS 304 Reducing Tees
UNS S30400 Buttweld Equal Tee
DIN 1.4301 Buttweld Unequal Tee
ANSI B16.9 SS 304 Buttweld Tees

SS 304 Buttweld Cross ANSI B16.9 Stainless Steel 304 Pipe Cross

SS 304 Cross

SS 304 Equal Cross
UNS S30400 Reducing Cross
DIN 1.4301 Buttweld Pipe Cross
ANSI B16.9 SS 304 Buttweld Cross

SS 304 Long Stub End ANSI B16.9 Stainless Steel Lap Joint Stub End

SS 304 Stub End

SS 304 Long Stub End
UNS S30400 Short Stub End
DIN 1.4301 Lap Joint Stub End
ANSI B16.9 SS 304 Buttweld Stub End

SS 304 Pipe Cap

SS 304 Buttweld Cap
UNS S30400 Buttweld Pipe Cap
DIN 1.4301 End Cap
ANSI B16.9 SS 304 Buttweld Pipe Cap

SS 304 Long Radius Pipe Bend Hot Induction Bend ASME B16.9

SS 304 Bend

SS 304 Long Radius Bend
UNS S30400 Piggable Bend
DIN 1.4301 Hot Induction Bend
ANSI B16.9 SS 304 Buttweld Bend

SS 304 Pipe Nipple ASTM A403 WP304 Barrel Nipple Stainless Steel

SS 304 Nipple

SS 304 Pipe Nipple
UNS S30400 Buttweld Swage Nipple
DIN 1.4301 Barrel Nipple
ANSI B16.9 SS 304 Buttweld Nipple

Looking for a specific SS 304 fitting type, size, or schedule? Contact our technical sales team for dimensions, availability, and bulk pricing.

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Applications of Stainless Steel 304 Fittings

Stainless Steel 304 Fittings offer high resistance to corrosion, great formability, and strong weldability, making them critical components across a wide range of industrial sectors.

Food and Beverage Industry: Widely used in process equipment, storage tanks, and piping systems because of its non-reactive surface, which prevents contamination and meets hygiene requirements.
Chemical and Petrochemical Industries: Well suited for handling non-aggressive chemicals, solvents, and the transfer of various fluid media where standard corrosion resistance is sufficient.
Oil and Gas Industry: Used in upstream, midstream, and downstream piping where moderate corrosion resistance is required, particularly in non-chloride service and non-sour gas environments. For offshore or H2S-bearing service, specify 316L or duplex grades.
Water Treatment: Specified for components and piping in filtration and purification systems due to its reliable corrosion resistance in water service.
Power Generation: Used in heat exchangers and piping systems handling water, steam, and exhaust in non-chloride environments.
Textile Industry: Utilised in dyeing and finishing operations where moderate chemical resistance is required.
Architectural and Decorative Uses: Selected for its aesthetic finish and resistance to atmospheric corrosion in facades, railings, trims, and other building structures.
Pharmaceutical Industry: Specified for cleanroom process piping and CIP/SIP systems where surface finish (Ra 0.8 micrometer or less) and full traceability to EN 10204/3.1 are required.

Solitaire Overseas supplies SS 304 pipe fittings to 50 or more countries with full EN 10204/3.1 certification.

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SS 304 Pipe Fittings Price

The following indicative prices are for 90 degree long radius elbows in SCH 40 as a reference. Prices vary based on quantity, schedule, end type, and certification requirements.

Type	Size and Schedule	Price (USD per piece)	Price (INR per piece)
90 deg Long Radius Elbow	1/2 inch NB SCH 40	From USD 5.23	From INR 436
90 deg Long Radius Elbow	3/4 inch NB SCH 40	From USD 8.52	From INR 710
90 deg Long Radius Elbow	1 inch NB SCH 40	From USD 16.48	From INR 1,374
90 deg Long Radius Elbow	1.5 inch NB SCH 40	From USD 18.12	From INR 1,511
90 deg Long Radius Elbow	2 inch NB SCH 40	From USD 23.14	From INR 1,929
90 deg Long Radius Elbow	2.5 inch NB SCH 40	From USD 25.00	From INR 2,084

Prices are indicative and subject to change with raw material rates, quantity, and special requirements. Contact us for bulk pricing and project-specific quotations.

Frequently Asked Questions about SS 304 Pipe Fittings

What is the difference between ASTM A403 WP304 and WP304L fittings?

WP304 fittings have a maximum carbon content of 0.08%, while WP304L is limited to 0.035% carbon. The lower carbon content in 304L prevents carbide precipitation during welding, making it the preferred choice for welded assemblies where post-weld annealing is not feasible.

What sizes are available for SS 304 pipe fittings?

SS 304 pipe fittings are available in seamless sizes from 1/2 inch to 10 inch NB and welded sizes from 1/2 inch to 48 inch NB, covering schedules SCH 10 through SCH XXS as per ASME B16.9.

Which standards do your SS 304 pipe fittings comply with?

SS 304 pipe fittings conform to ASTM A403 / ASME SA403 standards, with dimensions as per ASME B16.9, ASME B16.28, and MSS-SP-43. They also comply with international standards such as DIN, JIS, GOST, and EN 10253-2, and are supplied with EN 10204 / 3.1 material test certificates.

Can SS 304 fittings be used in food and pharmaceutical applications?

Yes. Grade 304 stainless steel is non-reactive and suitable for most food-grade fluids, making it widely used in food, beverage, dairy, and pharmaceutical industries. For ultra-high-purity or aggressive chemical environments, 316L is generally recommended.

What is the maximum operating temperature for SS 304 pipe fittings?

SS 304 fittings are rated for continuous service up to 925°C (1697°F) and intermittent service up to 870°C (1598°F). For cryogenic applications, 304 stainless steel maintains adequate toughness down to -196°C.