Threaded Coupling

Teshi Fittings’ Threaded Couplings are meticulously engineered to meet rigorous standards across a range of industries, including Petroleum, Chemical, Hydraulic, and Food sectors. Each coupling is crafted with precision, ensuring reliable sealing and effortless integration into piping systems. Committed to surpassing expectations, Teshi Fittings consistently delivers exceptional durability and performance with every coupling. Rely on our expertise to customize solutions for your project requirements, and discover the unparalleled quality of Teshi Fittings’ Threaded Couplings for all your piping needs.

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Specification
Material & Grades
Dimensions

Standard Specification of Threaded Coupling

Threaded Coupling Dimensions	ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799
Threaded Coupling Size	1/8″ NB TO 4″ NB
Threaded Coupling Type	Threaded (S/W) & SCREWED (SCRD) – NPT, BSP, BSPT
DIN	DIN2605, DIN2615, DIN2616, DIN2617, DIN28011
EN	EN10253-1, EN10253-2
Threaded Coupling Production Grades	Stainless Steel, Alloy Steel, Duplex, Nickel Alloys, Low temperature Steel, Carbon Steel, Cupro Nickel
Threaded Coupling Form	Threaded Full Coupling, Threaded Reducing Coupling

Material & Grades of Threaded Coupling

Stainless Steel Threaded Coupling	ASTM A182 F304, F304L, F306, F316L, F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F904L, ASTM A312/A403 TP304, TP304L, TP316, TP316L
Duplex & Super Duplex Steel Threaded Coupling	ASTM A 182 – F 51, F53, F55 S 31803, S 32205, S 32550, S 32750, S 32760, S 32950.
Carbon Steel Threaded Coupling	ASTM/ ASME A 105, ASTM/ ASME A 350 LF 2, ASTM / ASME A 53 GR. A & B, ASTM A 106 GR. A, B & C. API 5L GR. B, API 5L X 42, X 46, X 52, X 60, X 65 & X 70. ASTM / ASME A 691 GR A, B & C
Nickel Alloy Threaded Coupling	ASTM / ASME SB 336, ASTM / ASME SB 564 / 160 / 163 / 472, UNS 2200 (NICKEL 200) , UNS 2201 (NICKEL 201 ) , UNS 4400 (MONEL 400 ) , UNS 8020 ( ALLOY 20 / 20 CB 3 ) , UNS 8825 INCONEL (825) , UNS 6600 (INCONEL 600 ) , UNS 6601 (INCONEL 601) , UNS 6625 (INCONEL 625) , UNS 10276 (HASTELLOY C 276)
Alloy Steel Threaded Coupling	ASTM / ASME A 182, ASTM / ASME A 335, ASTM / ASME A 234 GR P 1, P 5, P 9, P 11, P 12, P 22, P 23, P 91, ASTM / ASME A 691 GR 1 CR, 1 1/4 CR, 2 1/4 CR, 5 CR, 9CR, 91
Copper Alloy Steel Threaded Coupling	ASTM / ASME SB 111 UNS NO. C 10100 , C 10200 , C 10300 , C 10800 , C 12000, C 12200, C 70600 C 71500, ASTM / ASME SB 466 UNS NO. C 70600 ( CU -NI- 90/10) , C 71500 ( CU -NI- 70/30)

Dimension of Threaded Coupling

NPS	End to End	Outside Diameter	Minimum Length of Thread
NPS	A	D	B	J
1/2	48	28	10.9	13.6
3/4	51	35	12.7	13.9
1	60	44	14.7	17.3
1.1/4	67	57	17	18
1.1/2	79	64	17.8	18.4
2	86	76	19	19.2
2.1/2	92	92	23.6	28.9
3	108	108	25.9	30.5
4	121	140	27.7	33

Threaded Reducing Coupling Class 6000 Dimensions NPS 1/2 to 4

NPS	End to End	Outside Diameter	Minimum Length of Thread
NPS	A	D	B	J
1/2	48	38	10.9	13.6
3/4	51	44	12.7	13.9
1	60	57	14.7	17.3
1.1/4	67	64	17	18
1.1/2	79	76	17.8	18.4
2	86	92	19	19.2
2.1/2	92	108	23.6	28.9
3	108	127	25.9	30.5
4	121	159	27.7	33

Manufacturing process and features of Threaded Coupling

Manufacturing Process:

Material Selection: Typically stainless steel, brass, aluminum, or plastic based on application needs.
Machining: Shaped initially through turning and machining operations.
Thread Cutting: Threads are precisely formed using threading tools.
Surface Treatment: Often undergoes plating or coating for enhanced durability.
Quality Control: Rigorous inspection ensures precise dimensions and thread integrity.

Features of Threaded Coupling:

Secure Closure: Ensures reliable sealing of connections.
Variety: Available in multiple thread standards and sizes.
Durability: Designed to resist mechanical stress and corrosion.
Precision Fit: Threads cut to ensure tight and reliable connections.
Application-Specific: Offered in various designs to meet specific sealing requirements.
Ease of Use: Allows easy installation and removal using standard tools.

This format provides a streamlined overview suitable for quick reference and understanding of threaded couplings.

Application Of Threaded Coupling

Oil and Gas	Secures pipeline connections for maintenance and pressure containment.
Plumbing Systems	Seals pipes in residential, commercial, and industrial plumbing for easy maintenance.
Water Supply Networks	Closes pipes during maintenance in water distribution systems.
HVAC Systems	Prevents leaks by sealing openings in heating and cooling installations.
Process Industries	Caps pipelines in chemical, pharmaceutical, and food processing for safety.
Fire Protection Systems	Essential for sealing fire sprinkler components during installation and maintenance.
Industrial Equipment	Caps fluid lines in machinery to prevent contamination and ease maintenance.
Shipbuilding and Marine	Seals pipe ends on ships and offshore platforms to prevent corrosion.
General Plumbing and Mechanical	Used across various applications for sealing and maintenance access.
Agricultural Irrigation	Caps irrigation pipes and valves during adjustments and maintenance.

Threaded Coupling Available Types

Forged Threaded Full Coupling	Forged Screwed Reducing Coupling
Stainless Steel Screwed Full Coupling	SS Forged Threaded Full Coupling
Carbon Steel Threaded Full Coupling	High Quality Threaded Coupling
ASTM A182 Threaded Full Coupling	Duplex Steel Threaded Full Coupling
Titanium Forged Threaded Full Coupling	Inconel Threaded Forged Coupling
Super Duplex Steel Screwed Coupling	Copper Nickel Threaded Coupling
150 lb. Threaded Full Coupling Fittings	6000LBS Forged Steel Threaded Coupling
ASME B16.11 Forged Threaded Full Coupling	Threaded Forged Full Coupling 3000LBS
ANSI B16.11 Forged Threaded Full Coupling	BS 3799 Forged Screwed Full Coupling
High Nickel Alloy Threaded Full Coupling	Hastelloy Screwed Full Coupling Pipe Fittings

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Frequently Asked Questions

Most frequent questions and answers

A threaded coupling is a type of pipe fitting used to join two pipes of the same or different diameters together. It features internal threads that match the external threads of the pipes, allowing for a secure and leak-proof connection. Threaded couplings are commonly used to extend the length of a pipe or to connect pipes in various piping systems.

Threaded couplings are available in a range of sizes to accommodate different pipe diameters. Standard sizes typically range from 1/8 inch to 4 inches. Custom sizes and specifications can also be manufactured to meet specific needs.

Threaded couplings are installed by threading them onto the ends of the pipes to be joined. A suitable thread sealant or tape is usually applied to ensure a leak-proof connection. The coupling is then tightened by hand or with a wrench until secure. Proper alignment and fit are crucial to prevent leaks and ensure system integrity.

Yes, we offer custom manufacturing solutions for threaded couplings to meet specific requirements. Please contact us with your detailed specifications, and we will work with you to produce couplings tailored to your needs.

The lead time for threaded couplings depends on the complexity and volume of the order. After reviewing your specifications, we will provide an estimated lead time. We are committed to delivering all projects on schedule while maintaining the highest quality standards.

Regular inspection of threaded couplings involves checking for leaks and ensuring that the coupling remains securely tightened. It is important to inspect for any signs of corrosion, wear, or damage that might affect the connection or the integrity of the piping system.

Threaded couplings are made from various materials, including carbon steel, stainless steel, brass, and other alloys. The choice of material depends on the specific application requirements, such as the type of fluid or gas, temperature, pressure, and environmental conditions.

Threaded couplings are used in various industries, including oil and gas, petrochemical, plumbing, water treatment, and construction. They are essential for connecting pipes, extending pipe lengths, and facilitating repairs and maintenance in piping systems.

Threaded couplings are manufactured to comply with various industry standards, such as ASME B16.11, MSS SP-79, and ASTM specifications. These standards define the dimensions, tolerances, and material requirements to ensure compatibility and reliability in piping systems.

Threaded couplings offer several advantages, including:

Easy installation and removal: Can be quickly screwed on and off without the need for special tools or equipment.
Strong, leak-proof connections: Ideal for high-pressure and high-temperature applications.
Versatility: Suitable for a wide range of pipe sizes and materials.
High strength and durability: Made from robust materials to handle demanding conditions.
Compliance with standards: Ensures quality and reliability in piping systems.

Yes, threaded couplings are versatile and can be used for both liquid and gas applications, provided they are made from appropriate materials and installed correctly to handle the specific conditions of the system, including pressure and temperature.