Duplex Steel Tube Fittings

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Paul Tube Fittings stands out as a top-notch manufacturer and supplier of high-quality Duplex Steel Tube Fittings, proudly based in Houston, USA. With a strong dedication to excellence, they provide precision-engineered products that adhere to international quality and durability standards. Their Duplex Steel Tube Fittings are celebrated for their remarkable corrosion resistance, strength, and reliability, even in the toughest environments. Catering to a diverse array of industries, including oil & gas, petrochemical, and marine sectors, Paul Tube Fittings guarantees timely deliveries, tailored solutions, and competitive pricing, making them a trusted ally for clients both across the United States and around the globe.

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Duplex Steel Tube Fittings are primarily made up of chromium (21–23%), nickel (4.5–6.5%), molybdenum (2.5–3.5%), nitrogen, and manganese, resulting in a well-balanced microstructure of austenite and ferrite. This unique dual-phase composition provides high strength and outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Their mechanical properties boast a tensile strength of up to 620 MPa, yield strength around 450 MPa, and impressive elongation and toughness, even in sub-zero temperatures. These characteristics make duplex steel an excellent choice for high-pressure and corrosive applications.

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 Houston, USA

At Paul Tube Fittings, we are proud to be the largest supplier, manufacturer, and exporter of Duplex Steel Tube Fittings in Houston, USA. Our cutting-edge solutions cater to all your piping needs. With state-of-the-art production facilities strategically located in the USA, 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 extensively utilized in industries where strength, corrosion resistance, and durability are paramount. In the oil and gas sector, they play a crucial role in offshore rigs, pipelines, and processing systems, thanks to their exceptional resistance to chloride-induced stress corrosion. In the chemical and petrochemical fields, they are vital for managing aggressive media. Moreover, these fittings are also employed in desalination plants, power generation, pulp and paper production, and marine environments. Their long service life and low maintenance requirements make them perfect for both high-pressure and high-temperature applications, ensuring performance and safety in demanding operational conditions.