Manufacturer, Supplier & Exporter of Copper Coupling (Full Coupling, Reducing Coupling)

Copper Couplings, including Full Couplings and Reducing Couplings, are essential pipe fittings used to connect two pipes in plumbing, HVAC, refrigeration, and various industrial applications. These fittings are primarily made of high-quality copper, known for its excellent thermal conductivity, corrosion resistance, and durability. Full Couplings are used to join two pipes of the same diameter, while Reducing Couplings connect pipes of different sizes, enabling smooth transition in pipe diameter within a system. Due to copper’s inherent properties, these couplings are ideal for fluid transport systems, including water supply, gas lines, and cooling systems, where reliability and longevity are critical.

Riddhi Siddhi Impex is a leading manufacturer and supplier of copper fittings, including Copper Couplings, in India. With their state-of-the-art manufacturing facilities and stringent quality control processes, Riddhi Siddhi Impex ensures that each coupling meets international standards such as ASTM, IS, and EN certifications. Their products are crafted to provide leak-proof, secure joints, and are available in various sizes to cater to diverse industrial and commercial requirements. The company’s dedication to quality, timely delivery, and customer satisfaction has made it a preferred supplier across India.

DThe availability of Copper Couplings by Riddhi Siddhi Impex spans major Indian cities, including industrial hubs and metropolitan areas like Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, and Kolkata. These cities have thriving construction and infrastructure projects that demand high-quality piping solutions, making copper fittings a sought-after commodity. Riddhi Siddhi Impex’s efficient distribution network ensures that these couplings reach clients promptly, supporting timely project completions in competitive markets.

Beyond the major metros, Riddhi Siddhi Impex supplies Copper Couplings to emerging industrial and urban centers such as Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, and Lucknow. These cities have witnessed rapid industrial growth, boosting demand for copper pipe fittings in sectors like manufacturing, power plants, and commercial real estate. The company’s ability to maintain stock and fulfill orders quickly has positioned it as a reliable domestic supplier in these regions.

Riddhi Siddhi Impex’s reach also extends to smaller yet strategically important cities such as Agra, Varanasi, Amritsar, Chandigarh, Mysuru, Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, and Thiruvananthapuram. Many of these cities are hubs for regional construction and infrastructure projects where dependable copper fittings are crucial. The company collaborates with local distributors and logistics partners to ensure consistent supply despite geographical challenges.

Copper Coupling (Full Coupling, Reducing Coupling) Specifications

Specifications

Parameter	Details
Material	Copper (Cu)
Type	Full Coupling, Reducing Coupling
Application	Plumbing, HVAC, Industrial Piping
Surface Finish	Polished / Cleaned
Connection Type	Socket Weld, Soldered
Standard	ASTM B75 / B88

Chemical Composition (%)

Element	Typical Range (%)
Copper (Cu)	≥ 99.9
Lead (Pb)	≤ 0.05
Oxygen (O₂)	0.02 - 0.05
Phosphorus (P)	≤ 0.03
Others	Trace amounts

Mechanical Properties

Property	Typical Value	Unit
Tensile Strength	210 - 240	MPa
Yield Strength	70 - 140	MPa
Elongation	20 - 35	%
Hardness (Brinell)	50 - 60	HB

Dimension Chart (in mm)

Nominal Pipe Size (NPS)	Full Coupling Outer Diameter	Reducing Coupling Size (Inlet)	Reducing Coupling Size (Outlet)	Length
1/2"	21.3	1/2"	3/8"	40
3/4"	26.7	3/4"	1/2"	45
1"	33.4	1"	3/4"	50
1 1/4"	42.2	1 1/4"	1"	55
1 1/2"	48.3	1 1/2"	1 1/4"	60

Equivalent Grades & Standards

Standard	Equivalent Grade
ASTM B75 / B88	C11000, C12200 (Copper Types)
EN 1254-1	Cu-DHP (CW024A)
JIS H3300	TP1
IS 14923	Copper IS 6911 Grade

Other Types of Copper Couplings

Type	Description
Full Coupling	Connects pipes of the same diameter in a straight run.
Reducing Coupling	Connects pipes of different diameters, reducing or increasing size.
Slip Coupling	Allows for minor pipe movement; usually used for repairs.
Compression Coupling	Uses compression fittings for a secure, solder-free joint.

In industrial corridors and port cities like Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Ankleshwar, Navsari, Valsad, and Rajpipla, Riddhi Siddhi Impex is a trusted name for copper piping solutions. These locations have growing industrial estates, chemical plants, and export-oriented units where high-quality copper couplings are essential for piping networks handling fluids and gases. The company’s capability to deliver customized coupling sizes and grades further enhances its suitability for specialized applications.

Frequently Asked Questions (FAQs)

Q1: What is the difference between Full Coupling and Reducing Coupling?

A1: Full Coupling connects two pipes of the same diameter, while Reducing Coupling joins pipes of different diameters to allow size transition.

Q2: Are copper couplings suitable for gas applications?

A2: Yes, copper couplings are suitable for low to medium pressure gas lines, complying with relevant safety standards.

Q3: What types of connections are available for copper couplings?

A3: Copper couplings are commonly available with solder (brazed) connections, but press-fit and threaded versions are also offered.

Q4: Can copper couplings be used in outdoor plumbing?

A4: Yes, but protective coatings or insulation are recommended to prevent oxidation and maintain appearance over time.