Duplex BSP / NPT Fittings

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Paul Tube Fittings, based in Houston, USA, is a reliable manufacturer and supplier of top-notch Duplex BSP / NPT Fittings, designed to offer exceptional corrosion resistance and strength in high-pressure fluid systems. Crafted from duplex stainless steel grades like S31803 or S32205, these fittings deliver impressive mechanical performance while standing up to chloride-induced stress corrosion cracking, pitting, and crevice corrosion. Paul Tube Fittings provides a comprehensive selection of British Standard Pipe (BSP) and National Pipe Thread (NPT) configurations, including adapters, elbows, couplings, and tees, ensuring dependable, leak-proof connections for demanding applications in the oil & gas, marine, and chemical processing sectors.

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Duplex BSP / NPT Fittings are generally constructed from duplex stainless steel alloys such as UNS S31803 or S32205, which contain about 22% chromium, 5–6% nickel, and 3% molybdenum, along with nitrogen enhancements. This distinctive composition grants them high tensile strength (around 620–880 MPa) and remarkable resistance to corrosion in chloride-rich and aggressive settings. Paul Tube Fittings guarantees precise threading (BSP/NPT) and high-quality surface finishes for a secure seal under pressure. These fittings excel in systems exposed to vibration, thermal stress, and corrosive media, making them perfect for critical and high-demand fluid handling applications.

Duplex BSP / NPT Fittings Specifications

Specifications: ASTM A182/ ASME SA182
Size: 1/8” NB to 4” NB (Socketweld & Screwed-Threaded)
Dimensions : ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Types : Socketweld Fittings, Screwed-Threaded Fittings
Pressure Rating: Threaded End-2000lb/ 3000lb/ 6000lbs / Socket-weld End-3000/ 6000/ 9000lbs
Thread: NPT, BSPT, BSPP

Duplex BSP / NPT Fittings Chemical Composition

MATERIAL	C	MN	SI	P	S	CR	MO	NI	N	FE
Duplex BSP / NPT Fittings	.030 Max	2.00 Max	1.00 Max	.030 Max	.020 Max	22.0-23.0	3.00-3.50	4.50-6.50	0.14-0.20	Balance

Duplex BSP / NPT Fittings Mechanical Properties

DENSITY	MELTING POINT	TENSILE STRESS	YIELD STRESS (0.2%OFFSET)	ELONGATION
7.8 g/cm3	1350 °C (2460 °F)	Psi – 116000 , MPa – 800	Psi – 80000 , MPa – 550	15 %

Types of Duplex BSP / NPT Fittings

Equivalent Grades of Duplex BSP / NPT Fittings

STANDARD	WERKSTOFF NR.	UNS	JIS	GOST	EN	OR
Hastelloy BSP C276	2.4819	N10276	NW 0276	ХН65МВУ	NiMo16Cr15W	ЭП760
Hastelloy NPT C22	2.4602	N06022	NW 6022	–	NiCr21Mo14W	–

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

Largest Manufacturer and Supplier of Duplex BSP / NPT Fittings in Houston, USA

At Paul Tube Fittings, We are proud to be the largest supplier, manufacturer, and exporter of Duplex BSP / NPT 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 BSP / NPT Fittings Uses

Duplex BSP / NPT Fittings are perfect for corrosive and high-stress environments where strong, dependable pipe connections are crucial. They’re commonly used in offshore oil rigs, desalination plants, petrochemical refineries, marine systems, and high-pressure chemical lines. Paul Tube Fittings’ duplex BSP/NPT fittings ensure leak-free, vibration-resistant sealing in both static and dynamic fluid systems. Their high corrosion resistance and durability make them a go-to choice for demanding applications, providing peace of mind in critical fluid handling scenarios.