Stainless Steel 317/317L Forged Fittings Manufacturer & Supplier

Stainless Steel 317/317L Forged Fittings are austenitic alloy fittings containing molybdenum that are noted for their chemical resistance, extended life, exceptional surface quality, and anti-oxidation qualities. Midland Alloys is a reputable SS 317L forged fittings manufacturer in Mumbai, offering high-quality products with long-lasting performance. We use innovative machinery and a controlled manufacturing environment to ensure that each fitting meets ASTM A182 and ASME SA182 specifications. We provide stainless steel 317L forged fittings in a variety of styles and sizes. We offer socket weld SS 317L and threaded SS 317 forged fittings in diameter ranging from ¼” NB to 4″ NB, with custom options. We offer schedule SS 317 forged pipe fittings to fulfil various piping system requirements.

Benefits of ASTM A182 F317L Forged Fittings:

ASTM A182 F317L forged fittings are known for their superior strength, durability, and resistance in demanding industrial environments. These fittings provide dependable performance and a long service life in chemical plants, refineries, and maritime applications.
These fittings provide good resistance to sulphuric, acetic, and formic acids, making them ideal for highly corrosive applications.

SS 317L forged pipe fittings socket-weld provide a secure and leak-free connection which is especially useful for high-pressure pipelines.
DIN 1.4449 / UNS S31703 forged fittings ensure less maintenance resulting in reduced operating downtime and expenses.
Their low carbon content improves weldability while protecting against sensitisation and intergranular corrosion.
These fittings maintain mechanical strength and stability even at high temperature to deliver consistent thermal performance.
The clean internal surface finish of SS 317L forged fittings increase flow efficiency and lowers pressure loss.
They are highly flexible across industries, delivering consistent results in chemical processing, power generation, and offshore operations.

ASME B16.11 SS 317 Forged Fittings Uses:

DIN 1.4449 / UNS S31703 forged fittings are widely used in industries that require high strength and chemical resistance. These fittings are useful in the petrochemical industry for managing acidic and high-pressure fluids. SS 317L fittings for petrochemical operations provide durable performance in refineries and chemical facilities. 317 forged fittings food & beverage are chosen for their hygienic surface and ability to resist process chemicals. 317/317L forged fittings are suitable for marine systems, pulp and paper industries and wastewater treatment because to its ability to withstand corrosion, moisture, and temperature fluctuations.

Difference Between 317L vs 316L Stainless Forged Fittings:

The main difference between stainless steel 317L forged fittings and SS 316L forged fittings is corrosion resistance. 317L has more molybdenum which provide superior resistance in hostile situations such as acidic or high chloride levels. It is great for chemical facilities, whereas 316L is suitable for a wider range of industrial uses. Both have low carbon levels for better weldability, although 317L has an advantage for aggressive settings.

Specification of Stainless Steel 317/317L Forged Fittings

Types of Stainless Steel 317/317L Forged Fittings

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 317/317L Forged Fittings Needs

Contact us today to discuss how Stainless Steel 317/317L 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 317/317L Forged fitting

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	Fe
SS 317	0.08 max	2.00 max	1.00 max	0.045 max	0.030 max	18.0 – 20.0	3.00 – 4.00	11.0 – 15.0	Balance
SS 317L	0.035 max	2.00 max	1.00 max	0.045 max	0.030 max	18.0 – 20.0	3.00 – 4.00	11.0 – 15.0	Balance

Mechanical Properties of Stainless Steel 317/317L Forged fitting

Grade	Density	Melting Point	Tensile Strength	Yield Strength (0.2% Offset)	Elongation
SS 317	8.0 g/cm³	1370 – 1400 °C (2500 – 2550 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %
SS 317L	8.0 g/cm³	1370 – 1400 °C (2500 – 2550 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %

Stainless Steel 317/317L Forged Fittings Equivalent Grade

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 317	1.4449	S31700	SUS 317	317S16	03Ch17N14M3	Z12CND17-13	X5CrNiMo17-12-2
SS 317L	1.4438	S31703	SUS 317L	317S11	03Ch17N13M3	Z3CND17-13	X2CrNiMo18-15-4

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 Standards of Stainless Steel 317/317L Forged Fittings

Raw Material

Cutting

Sizing

Heat Treatment

Pickling

Beveling

Polishing

Sand Blasting

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping

Applications of Stainless Steel 317/317L Forged Fittings

Offshore Industry

Nuclear Industries

Refineries

Ship Building

Aerospace

Pharmaceutical

Why Choose Midland Alloys Inc. for MSS SP‑79/83 317L Socket Weld Fittings:

Midland Alloys Inc. is a reliable stainless steel 317 fittings exporter India, known for quality products and global service. Our certifications include ISO 9001:2015, PED 2014/68/EU, and EN 10204 3.1/3.2 Mill Test Certificates. We support third-party examinations by TÜV, BV, SGS, and DNV. Our team collaborates with engineering firms, EPC contractors, marine operators, and chemical industries. We are well-known for timely delivery, export knowledge, and prompt assistance. As a supplier of SS 317L forged fittings, we conduct hydrostatic, ultrasonic, radiographic, and PMI tests. We also run tensile, hardness, and bend testing as needed. With clientele across the Middle East, Europe, and Southeast Asia, we are proud of our repeat business, constant quality, and professionalism. Check the SS 317 forged fittings price list India for the best value today.

FAQs – SS 317/317L Forged Fittings

What is the difference between SS 317L vs 304L forged fittings?

SS 317L has more molybdenum, offering better corrosion resistance than 304L. Ideal for chemical-heavy use.

Can Stainless Steel 317/317L fittings be used in seawater applications?

Yes. Their high molybdenum content resists saltwater corrosion effectively.

How do I maintain Stainless Steel 317/317L forged fittings?

Clean regularly with mild detergent and rinse thoroughly to prevent buildup or contamination.

What is the typical temperature range for Stainless Steel 317/317L forged fittings?

Stainless Steel 317/317L forged fittings work effectively at cryogenic temperature up to 870°C (1598°F).

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

Stainless Steel 317/317L Forged Fittings Manufacturer & Supplier

Benefits of ASTM A182 F317L Forged Fittings:

ASME B16.11 SS 317 Forged Fittings Uses:

Specification of Stainless Steel 317/317L Forged Fittings