Stainless Steel 304/304L Forged Fittings Manufacturer & Supplier

Stainless steel 304/304L forged fittings, designed for strength, corrosion resistance, and dependable piping performance, are manufactured and exported by Midland Alloys Inc., a reputable company with a global reputation. SS 304/304L is a part of the austenitic stainless steel family, finds extensive use in instrumentation and high pressure piping systems. While 304L, its low-carbon counterpart, guarantees improved weldability without carbide precipitation, grade 304 is the standard alloy.

These forged fittings offer high tensile strength, dimensional stability and superior corrosion resistance, with excellent fabrication characteristics. Forged elbows, tees, couplings, unions, bushings, plugs and outlets are among our goods; they are all made in following ANSI, ASTM A182, and ASME B16.11 standards. These fittings are widely used in the oil and gas, power generation, marine piping, refineries and petrochemical industries. Examine the following sections for mechanical specifications, pressure ratings, and dimensions.

304 / 304L Stainless Steel Forged Fittings Overview

Precision engineered pipe parts like stainless steel 304/304L forged fittings are made to be long-lasting, dependable and corrosion resistant. The versatile austenitic stainless steel include both grades. The 304L variant has lower carbon, enhances weld performance by preventing carbide precipitation.

With a composition of approximately 18% chromium and 8% nickel, these alloys balance corrosion resistance with strength. Long service life is ensured by their resistance to atmospheric conditions, water and mild acids. ASTM A182 and ASME B16.11 standards are followed in the manufacturing of forged elbows, tees, couplings, bushings, unions, plugs, and outlets. Sizes ranging from 1/8″ to 4″ are available in threaded and socket weld ends, catering to the oil and gas, shipbuilding, power, and food-grade piping sectors.

Benefits of 304/304L Stainless Steel Forged Fittings

Stainless steel 304/304L forged fittings deliver strong value in high pressure and corrosive piping environments. Their non-reactive surface and low carbon option make them suitable for both industrial and hygienic applications.

Excellent resistance to oxidation and corrosive agents in diverse environments
Low-carbon 304L minimises carbide precipitation during welding
High strength-to-weight ratio ensures system integrity under pressure
Superior machinability with consistent dimensional accuracy
Non-reactive surface supports food-grade and sanitary piping
Easy fabrication, welding, and installation across industries
Manufactured as per ASTM A182 and ASME B16.11 for proven reliability
Wide availability in forged elbows, tees, couplings, and unions

Difference Between 304 and 304L Stainless Steel

Stainless steel 304 and 304L share the same chromium (~18%) and nickel (~8%) foundation, offering strong corrosion resistance. The primary difference lies in carbon content: 304 allows up to 0.08%, while 304L restricts it to 0.03%. This reduction enhances weldability and lowers the risk of carbide precipitation during welding. While both grades resist corrosion effectively, 304L is more reliable for welded structures and pressure vessels, whereas 304 provides slightly higher tensile strength for non-welded applications.

Specification of Stainless Steel 304/304L Forged Fitting

The ASTM A182 and ASME B16.11 material grades, dimensional tolerances, and pressure classes are covered in the specifications for SS 304/304L forged fittings.

Types of Stainless Steel 304/304L Forged Fitting

SS 304/304L forged fittings are available in different forms to meet varied piping requirements. They are broadly divided into manufacturing types and pipe forms.

Manufacturing Types

Threaded Forged Fittings

Designed with internal or external threads, these fittings allow quick assembly and disassembly without welding.
Socket Weld Forged Fittings

These fittings are joined by inserting the pipe into a recessed area of the fitting and welding around it, ensuring strong, leak-proof joints.
Screwed Fittings

Similar to threaded types, screwed fittings are connected using screw threads, making installation simple and cost-effective.
BSPT

Bushings help reduce the bore size in a fitting or valve connection by joining pipes of varying diameters.
NPT

End caps are used to seal a pipeline's end, shielding it from impurities and guaranteeing closed systems' safety.

Forms

Forged Elbow

Elbows, which come in 45° and 90° varieties shift the direction of flow with little pressure loss.
Forged Bushing

Bushings help reduce the bore size in a fitting or valve connection by joining pipes of varying diameters.
Forged Tee

Used to split or combine flow across three directions essential for branching pipeline.
Forged Coupling

Offer a safe connection between two pipes; threaded and socket-welded options are available.
Forged Plug

Close open pipe ends which are frequently used for isolation or testing.
Forged Cross

With four openings, cross fittings help connect four pipes used when fluid distribution needs to occur in multiple directions.

Contact Midland Alloys Inc. for Your SS 304/304L Forged Fittings Needs

Contact us today to discuss how Stainless Steel 304/304L Forged Fittings can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.

Technical Details & Delivery Condition

Chemical Composition of Stainless Steel 304/304L Forged Fitting

Since nickel (~8%) and chromium (~18%) make up the base alloy the chemical composition of SS 304/304L forged fittings guarantees strength, weldability and resistance to corrosion.

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N
SS 304	0.08 max	2 max	0.75 max	0.045 max	0.030 max	18 – 20	–	8 – 11	–

Mechanical Properties of Stainless Steel 304/304L Forged Fitting

Mechanical properties define tensile strength, yield strength, hardness, and elongation levels, ensuring safe application in high-pressure piping systems.

Density	Melting Point	Tensile Strength	Yield Strength (0.2% Offset)	Elongation
8.0 g/cm³	1400 °C (2550 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %

SS 304/304L Forged Fittings Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 304	1.4301	S30400	SUS 304	304S31	08Х18Н10	Z7CN18‐09	X5CrNi18-10
SS 304L	1.4306	S30403	SUS 304L	304S11	08Х18Н10Т	Z2CN18-10	X2CrNi18-9

Weight Chart of Stainless Steel 304/304L Forged Fitting

Weight charts provide reference for load calculations, system compatibility, and pipeline layout planning.

Normal Pipe Sizes	A	B	QTY	Weight In KG
¼	0.81	0.88	160	0.20
⁄	0.97	1.00	130	0.26
½	1.12	1.31	100	0.57
¾	1.31	1.5	75	0.71
1	1.5	1.81	40	1.08
1 ¼	1.75	2.19	25	1.68
1 ½	2.00	2.44	18	2.38
2	2.38	2.97	10	3.55
2 ½	3.00	3.62	4	6.22
3	3.38	4.31	2	10.36
4	4.19	5.75	1	23.91

Pressure Rating of Stainless Steel 304/304L Forged Fitting

ASME B16.11 defines pressure ratings, which guarantee safe operation at different pressures and temperatures.

Pressure-Temperature
Temperature		Class
		150	300
			1/4 – 1 inch.	1 1/4 – 2 inch.	2 1/2 – 3 inch.
(oF)	(oC)
-20 to 150	-29 to 66	300	2000	1500	1000
200	93	265	1785	1350	910
250	121	225	1575	1200	825
300	149	185	1360	1050	735
350	177	150	1150	900	650
400	204	–	935	750	560
450	232	–	725	600	475
500	260	–	510	450	385
550	288	–	300	300	300

Size of Stainless Steel 304/304L Forged Fitting

Sizes range between 1/8″ and 4″, offered in threaded and socket weld configurations for flexible system design.

NPS (inch)	Pipe Schedule.	OD (inch)	Wall Thick. (in)	Temperature
				100 Fitting	200 Fitting	300 Fitting	400 Fitting	500 Fitting
				Allowable Stress
				16700	16700	16700	15500	14400
1″	40	1.315	0.133	2205	2205	2205	2047	1902
	80	1.315	0.179	3061	3061	3061	2841	2640
	160	1.315	0.250	4493	4493	4493	4170	3874
1 1/2″	40	1.900	0.145	1629	1629	1629	1512	1404
	80	1.900	0.200	2303	2303	2303	2138	1986
	160	1.900	0.281	3362	3362	3362	3120	2899
2″	40	2.375	0.154	1371	1371	1371	1272	1182
	80	2.375	0.218	1985	1985	1985	1843	1712
	160	2.375	0.344	3283	3283	3283	3047	2831
3″	40	3.500	0.216	1301	1301	1301	1208	1122
	80	3.500	0.300	1844	1844	1844	1712	1590
	160	3.500	0.438	2787	2787	2787	2587	2403
4″	40	4.500	0.237	1102	1102	1102	1023	950
	80	4.500	0.337	1596	1596	1596	1482	1377
	160	4.500	0.531	2611	2611	2611	2424	2552
5″	40	5.563	0.258	965	965	965	896	832
	80	5.563	0.375	1428	1428	1428	1325	1231
	160	5.563	0.625	2474	2474	2474	2296	2133
6″	40	6.625	0.280	877	877	877	814	756
	80	6.625	0.432	1379	1379	1379	1280	1189
	160	6.625	0.719	2382	2382	2382	2211	2054
8″	40	8.625	0.322	771	771	771	716	665
	80	8.625	0.500	1218	1218	1218	1131	1050
	160	8.625	0.906	2298	2298	2298	2133	1982
10″	40	10.750	0.365	699	699	699	649	603
	80	10.750	0.594	1159	1159	1159	1075	999
	160	10.750	1.125	2289	2289	2289	2124	1974

Stainless Steel Forged Fittings Grades We Offer

Stainless Steel 304/304L Forged Fittings

Stainless Steel 310/310S Forged Fittings

Stainless Steel 316/316L Forged Fittings

Stainless Steel 316Ti Forged Fittings

Stainless Steel 317/317L Forged Fittings

Stainless Steel 321/321H Forged Fittings

Stainless Steel 347/347H Forged Fittings

Stainless Steel 904L Forged Fittings

Stainless Steel 253MA Forged Fittings

SMO 254 Forged Fittings

Socket Weld Fittings Dimensions

Threaded Fittings Dimensions

Tolerance Chart

Socket Weld Fittings Dimensions

Threaded Fittings Dimensions

Tolerance Chart

Manufacturing Process of Stainless Steel 304/304L Forged Fittings

Raw Material

Cutting

Sizing

Heat Treatment

Pickling

Beveling

Polishing

Sand Blasting

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping

Applications and Uses of Stainless Steel 304/304L Forged Fittings

Industries requiring corrosion resistance, strength and dependability use SS 304/304L forged fittings. It is used in power generation, petrochemical plants, oil refineries, chemical processing, shipbuilding, marine piping, pharmaceuticals and food and beverage systems. The broad applicability is guaranteed by its capacity to function in both high-pressure industrial settings and sanitary grade settings.

Offshore Industry

Nuclear Industries

Refineries

Ship Building

Aerospace

Pharmaceutical

Global Export Destinations

SS 304/304L Forged Fittings Certifications & Compliance

Testing & Packaging

Global Export Destinations

SS 304/304L Forged Fittings Certifications & Compliance

Testing & Packaging

Resistance Capabilities

SS 304/304L forged fittings demonstrate excellent corrosion resistance against oxidising agents, freshwater, and atmospheric conditions due to their chromium-rich oxide layer. They withstand diluted nitric acid but are not suitable for hydrochloric or sulphuric acids. Our grades support furnace parts, exhaust piping and high-temperature systems by maintaining oxidation resistance at ~870°C (intermittent) and ~925°C (continuous). In most circumstances, it is resistant to stress corrosion cracking however, environments that are high in chloride must be handled carefully. 304L, with its low carbon content provides superior weld resistance by preventing carbide precipitation during high-temperature welding.

FAQs – Stainless Steel 304/304L Forged Fittings

What is the hardness and tensile strength of 304/304L forged fittings?

These fittings provide tensile strength of around 515 MPa and hardness up to 201 HB, making them reliable for pressure piping systems.

Are SS 304/304L forged fittings suitable for welding?

Yes, both grades support welding, with 304L preferred due to its lower carbon content, which prevents carbide precipitation.

What types of forged fittings are available in 304/304L?

The range includes elbows, tees, couplings, unions, bushings, plugs, and outlets, manufactured in threaded and socket weld configurations.

Products Categories

ISO Certificate

Nominal Size		Socket Bore Dia	Bore Dia of Fittings			Socket Wall Thickness						Body Wall			Depth of Socket	Center to Bottom of Socket
D N	NPS	B	D			C						Gmin			J min	A
			3000	6000	9000	3000		6000		9000		3000	6000	9000		90° Elbow Tee Cross			45° Elbow
			3000	6000	9000	ave	min	ave	min	ave	min	3000	6000	9000		3000	6000	9000	3000	6000	9000
6	1/8	10.9	6.1	3.2		3.18	3.18	3.96	3.43			2.41	3.15		9.5	11.0	11.0		8	8
8	1/4	14.3	8.5	5.6		3.78	3.30	4.60	4.01			3.02	3.68		9.5	11.0	13.5		8	8
10	3/8	17.7	11.8	8.4		4.01	3.50	5.03	4.37			3.20	4.01		9.5	13.5	15.5		8.0	11.0
15	1/2	21.9	15.0	11	5.6	4.67	4.09	5.97	5.18	9.53	8.18	3.73	4.78	7.47	9.5	15.5	19.0	25.5	11	12.5	15.5
20	3/4	27.3	20.2	14.8	10.3	4.90	4.27	6.96	6.04	9.78	8.56	3.91	5.56	7.82	12.5	19.0	22.5	28.5	13	14	19
25	1	34	25.9	19.9	14.4	5.69	4.98	7.92	6.93	11.38	9.96	4.55	6.35	9.09	12.5	22.5	27.0	32.0	14.0	17.5	20.5
32	1-1/4	42.8	34.3	28.7	22.0	6.07	5.28	7.92	6.93	12.14	10.62	4.85	6.35	9.70	12.5	27.0	32.0	35.0	17.5	20.5	22.5
40	1-1/2	48.9	40.1	33.2	27.2	6.35	5.54	8.92	7.8	12.70	11.12	5.08	7.14	10.15	12.5	32.0	38.0	38.0	20.5	25.5	25.5
50	2	61.2	51.7	42.1	37.4	6.93	6.04	10.92	9.5	13.84	12.12	5.54	8.74	11.07	16.0	38.0	41.0	54.0	25.5	28.5	28.5
65	2-1/2	73.9	61.2			8.76	7.62					7.01			16.0	41.0			28.5
80	3	89.9	76.4			9.52	8.30					7.62			16.0	57.0			32.0
100	4	115.5	100.7			10.69	9.35					8.56			19.0	66.5			41.0

Nominal Size		Center-to-End						Outside Diameter of Band			Wall Thickness			Length of Thread
DN	NPS	A						H			G min			min	mim
		90° Elbows, Tees, Crosses			45° Elbows			H			G min
		2000	3000	6000	2000	3000	6000	2000	3000	6000	2000	3000	6000
6 8 10	1/8 1/4 3/8	21 21 25	21 25 28	25 28 33	17 17 19	17 19 22	19 22 25	22 22 25	22 25 33	25 33 38	3.18 3.18 3.18	3.18 3.30 3.51	6.35 6.60 6.98	6.4 8.1 9.1	6.7 10.2 10.4
15 20 25	1/2 3/4 1	28 33 38	33 38 44	38 44 51	22 25 28	25 28 33	28 33 35	33 38 46	38 46 56	46 56 62	3.18 3.18 3.68	4.09 4.32 4.98	8.15 8.53 9.93	10.9 12.7 14.7	13.6 13.9 17.3
32 40 50	1-1/4 1-1/2 2	44 51 60	51 60 64	60 64 83	33 35 43	35 43 44	43 44 52	56 62 75	62 75 84	84 102	3.89 4.01 4.27	5.28 5.56 7.14	10.59 11.07 12.09	17.0 17.8 19.0	18.0 18.4 19.2
65 80 100	2-1/2 3 4	76 86 106	83 95 114	95 106 114	52 64 79	52 64 79	64 79 79	92 109 146	102 121 152	121 146 152	5.61 5.99 6.55	7.65 8.84 11.18	15.29 16.64 18.67	23.6 25.9 27.7	28.9 30.5 33.0

Minimal Diam.		Outer Dia. For Bevel End	Inner Dia. For End	Elbow		Tee		Reducer	Cap	180° Elbow
DN	NPS			A	B	C	M	H	E	O	K	Roughness
500-600	20-24	+6.4/-4.8	4.8	3.2	3.2	3.2	3.2	4.8	9.6	–	–	–
650-750	26-30
				4.8	4.8	4.8	4.8
800-1200	32-48
1250-1500	50-60	+9.6/-6.4	6.4	9.6	9.6	9.6	9.6	9.6	–
1550-1750	62-70	+12.7/-9.6	9.6	12.7	12.7	–
1800-2000	72-80	+16/-12	12	16	16
15-65	1/2-2 1/2	+1.6/-0.8	0.8	1.6	1.6	1.6	1.6	1.6	3.2	6.4	6.4	0.8
80-100	3-4	1.6	1.6						6.4
125-200	5-8	+2.4/-1.6
250-450	10-18	+4/-3.2	3.2	2.4	2.4	2.4	2.4	2.4		9.6