Duplex Steel Tube Fittings

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Max Tube Fittings is a well-respected manufacturer and supplier of Duplex Steel Tube Fittings based in Delhi, India. They specialize in creating precision-engineered solutions that ensure leak-proof connections in piping and instrumentation systems. Crafted from top-notch Duplex Stainless Steel grades like S31803 and S32205, these tube fittings strike a perfect balance between impressive mechanical strength and outstanding corrosion resistance. They’re a go-to choice in critical industries where it’s vital to resist chloride stress corrosion cracking and pitting. Thanks to their durability and reliability, they’re perfect for tough environments like offshore, marine, chemical, and power generation applications.

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Duplex Steel Tube Fittings feature a unique dual-phase microstructure, comprising about 50% austenite and 50% ferrite, which gives them remarkable toughness and high yield strength. Typically, they include 21–23% chromium, 4.5–6.5% nickel, and 2.5–3.5% molybdenum, enhancing their ability to resist pitting, crevice corrosion, and erosion in chloride-heavy settings. On the mechanical side, Duplex Steel boasts a tensile strength of around 620 MPa, a yield strength of about 450 MPa, and impressive elongation with impact toughness, even in low temperatures. This combination guarantees a long service life, dependable performance, and strength that outshines standard austenitic stainless steels.

Duplex Steel Tube Fittings Specifications

Specification	ASTM A276, ASTM A182 ASME SA479, ASME SA182
Tube Size	1/16 OD to 2 OD, Od to 50mm OD
Type	Seamless/ Welded/Fabricated
Thread	BSPT, UNF, SAE, BSP, NPT, ISO, etc.
Material Grades	Duplex 2205 Duplex S31803 Duplex S32205
PTFE Standard	ASTM D1710 and D3294
Pressure Rating	1000/300/6000/3000/10000 PSI for Duplex Steel
Temperature	150-400°C
PACKING DETAIL	size of the wooden box – 382717CM size of carton – 211614CM/312116CM/364550CM

Duplex Steel Tube Fittings Sizes

Duplex SS Seamless Compression Fittings :

Size: 1/8 to 2

Pressure Rating: 3000 psi to 10000 psi

Threads: NPT, BSPT, BSPP

Duplex SS Welded Compression Fitting and Tube Adapters :

Size: 24 to 94 and Custom

Pressure Rating: 30000 psi to 10000 psi

Threads: NPT, BSPT, BSPP

Types of Duplex Steel Tube Fittings

Dimension of Duplex Steel Tube Fittings

Threads Dimension of BSPP and BSPT
SIZE	PITCH & SIZE	OD THREAD		OD THREAD		ID THREAD		ID Thread
DASH	BSPP & BSPT	MALE BSPT		MALE BSPP		FEMALE BSPT		FEMALE BSPP
	Inch to TPI	mm	inch	mm	inch	mm	inch	mm	inch
-4	1/4 to 19	12,8	0.5	13,0	0.51	11,2	0.44	11,9	0.47
-2	1/8 to 28	9,5	0.37	9,6	0.38	8,4	0.33	8,6	0.34
-6	3/8 to 19	16,3	0.64	16,5	0.65	14,7	0.59	15,2	0.6
-10	5/8 to 14	22,5	0.89	22,8	0.9	20,6	0.81	20,8	0.82
-8	1/2 to 14	20,4	0.8	20,8	0.82	18,3	0.72	19,1	0.75
-12	3/4 to 14	25,9	1.02	26,3	1.04	23,9	0.94	24,6	0.97
-20	1.1/4 to 11	41,1	1.62	41,8	1.64	38,6	1.52	39,4	1.55
-16	1 to 11	32,6	1.28	33,1	1.3	29,7	1.17	30,7	1.21
-24	1.1/2 to 11	47,0	1.85	47,7	1.88	44,5	1.75	45,5	1.79
-40	2.1/2 to 11	74,1	2.92	75,1	2.95	71,9	2.83	72,6	2.86
-32	2(11)	58,6	2.31	59,5	2.34	56,4	2.22	57,4	2.26
-48	3 to 11	86,6	3.41	87,9	3.46	84,6	3.33	85,4	3.36

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We offer These Products as per DIN, ISO, JIS or ANSI Standard.

Largest Manufacturer and Supplier of Duplex Steel Tube Fittings in Delhi, India

At Max Tube Fittings, we are proud to be the largest supplier, manufacturer, and exporter of Duplex Steel Tube Fittings in Delhi, India. Our cutting-edge solutions cater to all your piping needs. With state-of-the-art production facilities strategically located in the India, we maintain a vast inventory of over 16,000 tons of premium-quality materials, ensuring we have the stock readily available to meet your demands.

Duplex Steel Tube Fittings Uses

Duplex steel tube fittings are widely used in various industries due to their exceptional corrosion resistance, high strength, and durability. Common applications include oil and gas exploration, chemical processing, and marine environments, where they handle harsh conditions. They are also utilized in pulp and paper manufacturing, wastewater treatment, and power generation. Their excellent weldability makes them suitable for complex piping systems, ensuring leak-tight connections and enhanced performance in high-pressure and high-temperature applications. Overall, duplex steel tube fittings provide reliable solutions for demanding industrial requirements.