Duplex Steel Forged Fittings Manufacturer & Supplier

Duplex Steel Forged Fittings are strong, corrosion resistant components composed of ferritic and austenitic stainless steel mix. These fittings connect piping systems securely in high-pressure environments. Midland Alloys is a leading Duplex forged fittings supplier in Mumbai, India, providing high-quality products made with advanced forging and heat-treatment technologies. We manufacture duplex steel forged fittings that meet ASTM A182 and ASME SA182 standards. Our product line includes Duplex Steel UNS S31803 Forged Fittings and Duplex Steel UNS S32205 Forged Fittings, which are available in a variety of configurations such as socket weld duplex forged fittings and threaded duplex forged fittings. We provide Tees, Elbows (45° and 90°), Couplings (Full/Half), Cross, Union, Swage Nipple, Plug, Cap, and Bush. Sizes range from ¼” to 4″ NB, with custom options available.

Benefits of ASME SA182 Duplex Forged Fittings

Duplex Steel Forged Fittings provide long-lasting, reliable service in demanding applications. They are withstand stress, corrosion and temperature swings.

Resist pitting and crevice corrosion in chloride-heavy environments.
Handle pressure without cracking or deforming.
Excellent strength-to-weight ratio compared to other stainless fittings.
Better fatigue resistance than standard austenitic grades.
Work well across high and low temperatures.
Durable in aggressive chemical conditions.
Available in precise shapes and tolerances for easy installation.

ASTM A182 Duplex Forged Fittings – Uses

Duplex Steel Forged Fittings are widely used in industries that need strong, corrosion-resistant piping systems. In oil and gas plants, UNS S32205 forged fittings are used for flow lines and pipelines exposed to seawater and high pressure. In chemical processing plants, they handle acidic and caustic fluids without breakdown. The power generation sector uses them in boilers and heat exchangers due to their heat resistance. They are also utilized in marine equipment, paper and pulp mills, and offshore structures.

Difference Between Duplex 2205 vs Super Duplex S32750 Fittings

Duplex Steel Forged Fittings, such as Duplex 2205, provide a balanced combination of strength and corrosion resistance. They are suitable for general industrial applications. Super Duplex S32750/S32760 forged fittings offer greater strength and corrosion resistance, particularly in seawater and harsh chemical environments. Super Duplex fittings can withstand more extreme conditions, but they are also more expensive. For most applications, Duplex Steel S31803 & S32205 Forged Fittings deliver excellent performance at a lower cost, while Super Duplex is chosen for more critical setups.

Specification of Duplex Steel Forged Fittings

Types of Duplex Steel 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 Duplex Steel Forged Fittings Needs

Contact us today to discuss how Duplex Steel 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.

Duplex & Super Duplex Steel Forged Fittings Grades We Offer

Duplex Steel Forged Fittings

Duplex Steel UNS S31803 Forged Fittings

Duplex Steel UNS S32205 Forged Fittings

Super Duplex Steel Forged Fittings

Super Duplex Steel UNS S32750 Forged Fittings

Super Duplex Steel UNS S32760 Forged Fittings

Socket Weld Fittings Dimensions

Threaded Fittings Dimensions

Tolerance Chart

Socket Weld Fittings Dimensions

Threaded Fittings Dimensions

Tolerance Chart

Manufacturing Process of Duplex Steel Forged Fittings

Raw Material

Cutting

Sizing

Heat Treatment

Pickling

Beveling

Polishing

Sand Blasting

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping

Applications of Duplex Steel Forged Fittings

Offshore Industry

Nuclear Industries

Refineries

Ship Building

Aerospace

Pharmaceutical

Why Choose Midland Alloys Inc. for ANSI B16.11 Duplex Forged Fittings

Midland Alloys Inc. is a reliable Duplex forged fittings manufacturer in Mumbai. We are ISO 9001:2015 certified and provide PED 2014/68/EU and EN 10204 3.1/3.2 mill test certificates. We also support third-party inspections by TUV, BV, SGS, and DNV. We work with EPC contractors, engineering firms, marine and chemical industries ensures that we understand complex needs and deliver quickly with proper export documents. Every fitting go through in-house and third-party testing. We conduct hydrostatic tests, ultrasonic tests (UT), radiographic tests (RT), and PMI to check pressure, welds, and material grade. We also do tensile, hardness, and bend tests based on your order. As a Duplex stainless fittings exporter India, we serve clients across the Middle East, Europe, and Southeast Asia.

FAQs –Duplex Steel Forged Fittings

What is Duplex forged fittings price per kg?

Price ranges from ₹450–₹750 per kg depending on grade (S31803 or S32205), size, and type.

What is Duplex steel forged fittings sizes?

Standard sizes range from ¼” NB to 4″ NB. Custom sizes are also available.

What is the typical temperature and pressure rating for duplex steel forged fittings?

They work well up to 600°C and pressure ratings up to 6000 PSI, depending on fitting type.

Can duplex steel forged fittings be welded?

Yes, but it needs controlled conditions to avoid damaging the ferritic/austenitic structure. Welding is mostly done with care or avoided if threaded or socket weld types are used.

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