Manufacturer, Supplier & Exporter of Stainless Steel Threaded Half Coupling

Stainless Steel Threaded Half Couplings are essential components widely used in piping systems to connect pipes, valves, and other fittings securely. These couplings feature internal threads that provide a tight, leak-proof connection, making them ideal for applications where disassembly and maintenance are frequent. Their threaded design eliminates the need for welding, simplifying installation and reducing downtime...

Riddhi Siddhi Impex, a trusted manufacturer and supplier, specializes in producing premium-grade stainless steel threaded half couplings. With a strong foothold in the Indian market, the company caters to diverse industrial sectors including oil and gas, petrochemicals, pharmaceuticals, and power plants. Their products are known for precision engineering, adherence to international standards, and long-lasting performance..

The key advantage of Acetal (Delrin) Ferrule Fittings is their superior dimensional stability and mechanical strength. These fittings withstand repeated stress, vibrations, and temperature fluctuations without deforming, making them ideal for dynamic and high-pressure applications. Additionally, Acetal is resistant to many solvents, fuels, and chemicals, which extends the lifespan of ferrule fittings even in aggressive environments..

The stainless steel materials used in manufacturing these couplings, such as SS304, SS316, and SS316L, are chosen for their exceptional corrosion resistance and mechanical strength. These alloys contain chromium, nickel, and molybdenum, which enhance durability in harsh environments, including acidic or saline conditions. This ensures reliability even in high-pressure or high-temperature applications..

Mechanical properties of stainless steel threaded half couplings include excellent tensile strength and yield strength, which enable them to withstand significant mechanical stresses. Additionally, their toughness and elongation characteristics provide resistance against cracking or deformation under operational pressures, contributing to the safety and integrity of piping networks..

Stainless Steel Threaded Half Coupling

Specification

Material Grade	SS304, SS316, SS316L
Type	Threaded Half Coupling
Connection	Threaded (Female)
Sizes	1/8" to 4" (Other sizes on request)
Standards	ASTM A182, ASME B16.11
Finish	Polished / Pickled & Passivated
Application	Used in piping for connecting pipes and fittings

Chemical Composition (%)

Element	SS304	SS316	SS316L
Carbon (C)	≤0.08	≤0.08	≤0.03
Chromium (Cr)	18-20	16-18	16-18
Nickel (Ni)	8-10.5	10-14	10-14
Manganese (Mn)	≤2	≤2	≤2
Molybdenum (Mo)	—	2-3	2-3
Silicon (Si)	≤1	≤1	≤1
Phosphorus (P)	≤0.045	≤0.045	≤0.045
Sulfur (S)	≤0.03	≤0.03	≤0.03

Mechanical Properties

Property	Value
Tensile Strength	515 - 750 MPa
Yield Strength (0.2% offset)	205 - 290 MPa
Elongation	30% Minimum
Hardness	≤ 95 HRB
Impact Resistance	Good

Dimension Chart (in Inches)

Nominal Size	Length (L)	Diameter (D)	Thread Size
1/8"	22	15	1/8" NPT
1/4"	25	18	1/4" NPT
1/2"	30	24	1/2" NPT
1"	38	35	1" NPT
2"	50	50	2" NPT
3"	65	65	3" NPT
4"	75	75	4" NPT

Equivalent Grades

Standard	Equivalent Grade
AISI/ASTM	304, 316, 316L
EN	1.4301, 1.4404
JIS	SUS304, SUS316L
DIN	1.4301, 1.4404

Equivalent Standards

Standard	Description
ASTM A182	Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts
ASME B16.11	Forged Steel Fittings, Socket-Welding and Threaded
ISO 4144	Stainless Steel Fittings Threaded for the Food Industry

Other Types of Stainless Steel Couplings

Type	Description
Socket Weld Coupling	Provides a stronger, welded connection for high pressure applications
Butt Weld Coupling	Used to join pipes with a smooth surface by welding
Reducing Coupling	Allows connection of pipes with different diameters
Threaded Coupling	Used for easy assembly and disassembly of pipes via threaded connection

Riddhi Siddhi Impex’s stainless steel threaded half couplings come in various sizes and pressure ratings to meet different project requirements. The couplings are available in standard dimensions, making them compatible with industry-standard pipes and fittings. This flexibility ensures that clients across sectors can find suitable solutions for their piping infrastructure..

Frequently Asked Questions (FAQs)

Q1: What materials are Stainless Steel Threaded Half Couplings made of?

A1: They are commonly made from SS304, SS316, and SS316L stainless steel grades known for corrosion resistance and durability.

Q2: Where are Stainless Steel Threaded Half Couplings used?

A2: They are widely used in industries such as oil & gas, chemical, petrochemical, power plants, and water treatment for pipe connection applications.

Q3: What standards do these couplings comply with?

A3: They conform to ASTM A182 and ASME B16.11 standards ensuring high quality and reliability.

Q4: Can I get custom sizes for threaded half couplings?

A4: Yes, manufacturers like Riddhi Siddhi Impex offer custom sizes as per client requirements.