SS 317 Forged Fittings

SS 317 forged fittings are engineered to deliver unmatched strength, long-lasting durability, and superior resistance to chemical attack, making them indispensable in India’s most demanding industries. Manufactured from stainless steel grade 317, which contains higher molybdenum content than standard 316, these fittings provide excellent protection against pitting, crevice corrosion, and aggressive chemicals like sulfuric and acetic acids. The forging process is central to their performance—starting with high-quality billets that are heated and compressed under controlled pressure to refine the grain structure, enhance toughness, and eliminate weaknesses found in cast fittings. After forging, they undergo precision machining, threading, and rigorous testing to ensure compliance with ASTM, ASME, and ANSI standards. This process results in fittings with tight dimensional accuracy, leak-proof performance, and the ability to withstand high-pressure and high-temperature conditions. Engineers prefer SS 317 forged fittings because they combine reliability with cost efficiency: by reducing downtime, minimizing maintenance, and extending service life, they contribute to substantial long-term savings. Their applications span across petrochemicals, power generation, pharmaceuticals, paper and pulp industries, marine environments, and food processing units where hygiene, efficiency, and resilience are non-negotiable. More than just components, SS 317 forged fittings are precision-crafted solutions that guarantee system integrity and operational safety in the harshest industrial settings.

The historical presence of SS 317 forged fittings in India mirrors the country’s industrial evolution, beginning with the post-independence expansion of refineries, chemical plants, and heavy industries, where the demand for robust stainless steel solutions grew rapidly. Over decades, Indian manufacturers perfected the forging craft, combining traditional metallurgical skills with modern global practices, and established themselves as trusted suppliers not only domestically but also internationally. This legacy has positioned India as a significant hub for forged fittings that meet stringent global standards while being cost-effective. Engineers consistently choose SS 317 forged fittings not just for their corrosion resistance and durability, but also for their economic advantage—longer service life, reduced replacements, and reliable performance even in coastal and chemically aggressive environments. Their story represents more than technical utility; it reflects resilience, adaptability, and a tradition of trust that continues to power India’s infrastructure and exports. Today’s these fittings align seamlessly by embodying expertise, authority, and proven reliability. By choosing SS 317 forged fittings, industries are not only investing in cost-saving, long-lasting components but also in a product that symbolizes India’s engineering excellence and its enduring contribution to global industrial progress.

317/317L Stainless Steel Forged Fittings Equivalent Grades

STANDARD	UNS	WNR.	JIS	EN
SS 317	S31700	1.4449	SUS 317	-
SS 317L	S31703	1.4438	SUS 317L	X2CrNiMo18-15-4

SS 317/317L Socket Weld Elbow

SS 317 Forged Elbow, UNS S31700 / S31703 Threaded Elbow, DIN 1.4438 Forged Elbow, ASME SA 182 SS F317L 45 deg Threaded Elbow, Stainless Steel 317 90 deg Forged Elbow

SS 317/317L Forged Tee

ASME SA182 SS 317L Socket Weld Tee, ASTM A182 Stainless Steel 317 Forged Equal Tee, DIN 1.4449 Reducing Tee, UNS S31703 Unequal Tee, SS 317 / 317L Reducing Tee, SS 317 Threaded Equal Tee

SS 317/317L Forged Cross

SS A182 F317 Threaded Equal Cross, UNS S31700 / DIN 1.4449 Forged Cross, ASME SA182 SS 317L Socketweld Equal Cross, SS 317 Threaded Cross, Stainless 317 Reducing Cross, SS 317L Forged Unequal Cross Supplier

SS 317/317L Full Coupling

DIN 1.4449 Threaded Full Coupling, UNS S31700 Forged Full Coupling, ASME SA 182 Stainless Steel 317L Socketweld Full Coupling, ASTM A182 317 SS Full Coupling

SS 317/317L Forged Half Coupling

ASTM A182 F317 Stainless Steel Socket Weld Half Coupling, SS UNS S31700/ S31703 Half Coupling, ANSI B16.11 SS 317 Threaded Half Coupling

SS 317/317L Forged Pipe Cap

UNS S31700 Forged Pipe End Cap, Stainless Steel 317 Threaded Pipe Cap, ASTM A182 F317 Stainless Steel Socketweld Pipe Cap, ASME SA 182 SS 317L Forged Pipe End Cap

SS 317/317L Forged Union

UNS S31700 Socketweld Union, ANSI B16.5 Stainless Steel 317 Union, ASTM A182 F317 Stainless Steel Threaded Union, ASME SA 182 SS 317 / 317L Forged Union

SS 317/317L Forged Bushing

UNS S31700 Bushing, B16.36 Stainless Steel 317 Hex Head Bushing, ASTM A182 F317 Stainless Steel Threaded Bushing, ASME SA 182 SS 317 / 317L Forged Threaded Bushing

SS 317/317L Forged Nipple

UNS S31700 Threaded Nipple, B16.36 SS 317 Socket weld Nipple, ASTM A182, F317 Stainless Steel Swage Nipple, ASME SA 182 SS 317 Hex Nipple, SS 317/317L Screwed Pipe Nipple

Stainless Steel Forged Fittings Specification :

ASTM A182 / ASME SA182

Dimension Standard :

ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799

Size :

1/8" NB to 4" NB

Type :

Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type)

Rating Pressure :

Threaded End - 2000 /3000/ 6000 LBS. Socket-weld End - 3000 / 6000/ 9000 LBS.

Chemical Composition of SS 317/317L Forged Fittings

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N
317	0.08 max	2 max	1 max	0.040 max	0.03 max	18 – 20	3 – 4	11 – 14	-
317L	0.035 max	2 max	1 max	0.040 max	0.03 max	18 – 20	3 – 4	11 – 15	-

Mechanical Properties Of SS 317/317L Forged Fittings

Density	8.0 g/cm3
Melting Point	1454 C (2650 F)
Tensile Strength	Psi – 75000 , MPa – 515
Yield Strength (0.2%Offset)	Psi – 30000 , MPa – 205
Elongation	35 %

Physical Properties of 317/317L Stainless Steel Forged Fittings

Physical Properties (Room Temperature)
Specific Heat (0-100C)	500	J.kg-1.K-1
Thermal Conductivity	14.6	W.m -1.K-1
Thermal Expansion	16.5	mm/m/C
Modulus Elasticity	193	GPa
Electrical Resistivity	7.4	μohm/cm
Density	7.99	g/cm3