Manufacturer, Supplier & Exporter of Duplex Steel Threaded Cap

Duplex Steel Threaded Caps are precision-engineered pipe fittings designed to securely close the end of a pipe. These fittings are manufactured by Riddhi Siddhi Impex, a trusted name in the industrial pipe fittings sector, ensuring high-quality standards and long-lasting performance. The threaded design allows for easy installation and removal, making it ideal for maintenance-intensive systems...

Riddhi Siddhi Impex has established itself as a trusted manufacturer and supplier of Duplex Steel Threaded Caps across India. Their products are engineered to meet stringent industry standards such as ASTM A182, ASME B16.11, and ISO 9001, guaranteeing reliability and long-term performance. These caps are suitable for a wide range of applications including oil and gas pipelines, chemical processing plants, marine installations, and power generation facilities, where exposure to corrosive media and extreme environmental conditions is common...

These threaded caps are widely used across industries such as oil and gas, petrochemical, chemical processing, marine, and power generation. They are suitable for applications involving high pressure, temperature fluctuations, and corrosive media, ensuring the reliability of critical piping systems...

In India, these fittings are available in multiple domestic cities including Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, and Rajpipla. This extensive reach ensures easy accessibility and timely delivery for industrial projects nationwide...

Duplex Steel Threaded Caps are essential components in industrial piping systems, specifically designed to close the end of pipes while maintaining system integrity and pressure control. Manufactured by Riddhi Siddhi Impex, these caps are crafted using premium duplex stainless steel, which combines the benefits of austenitic and ferritic stainless steels. This ensures exceptional corrosion resistance, high tensile strength, and durability under both high-pressure and high-temperature conditions. The threaded design facilitates a secure, leak-proof connection without the need for welding, which significantly reduces installation time and labor costs while enhancing safety..

Duplex Steel Threaded Cap

Specification

Grade	Duplex Steel 2205 / 2507
Standard	ASTM A182 / ASME SA182
Size	1/2" to 12"
Schedule	10, 20, 40, 80, 160
End Connection	Threaded
Finish	Polished / Pickled / Passivated
Application	Piping Systems, Oil & Gas, Chemical, Petrochemical

Chemical Composition

Element	Content (%)
Chromium (Cr)	22 – 23
Nickel (Ni)	5 – 6.5
Molybdenum (Mo)	3 – 3.5
Manganese (Mn)	1 – 2
Iron (Fe)	Balance
Nitrogen (N)	0.14 – 0.20
Carbon (C)	≤ 0.03
Silicon (Si)	≤ 1

Mechanical Properties

Property	Value
Tensile Strength	≥ 620 MPa
Yield Strength (0.2% offset)	≥ 450 MPa
Elongation	≥ 25%
Hardness	≤ 320 HB

Dimension Chart

Size (inches)	OD (mm)	Length (mm)	Weight (kg)
1/2"	21.3	38	0.12
1"	33.4	51	0.25
2"	60.3	76	0.60
4"	114.3	127	1.85
6"	168.3	152	3.80

Equivalent Grades

Standard	Grade
ASTM	F51 / F53
EN	1.4462 / 1.4410
JIS	SUS 329J1 / SUS 329J4L
GB	06Cr22Ni5Mo3N

Equivalent Standards

Standard	Description
ASTM A182	Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves
ASME SA182	Standard for Stainless Steel Socket-Weld and Threaded Fittings

Other Types

Grade	Description
SS 304	General-purpose austenitic stainless steel
SS 316	Marine-grade with superior corrosion resistance
SS 321	Titanium stabilized for high-temperature applications
SS 430	Ferritic stainless steel for moderate corrosion resistance

Duplex Steel Threaded Caps are widely appreciated for their superior resistance to stress corrosion cracking, pitting, and crevice corrosion, making them ideal for systems exposed to chlorides and other aggressive chemicals. Their robust construction ensures that they maintain structural integrity even under fluctuating pressures and temperatures, which is critical for industrial applications where safety and reliability are paramount. This makes duplex threaded caps a preferred choice for engineers and plant designers aiming for long-term performance with minimal maintenance..

Frequently Asked Questions (FAQs)

Q1: What is a Duplex Steel Threaded Cap used for?

A1: It is mainly used to seal pipe ends in industrial piping systems for oil & gas, chemical, and petrochemical industries.

Q2: Can Riddhi Siddhi Impex supply custom sizes?

A2: Yes, we provide Duplex Steel Threaded Caps in a wide range of sizes, schedules, and finishes according to client requirements.

Q3: What is the corrosion resistance of Duplex Steel Caps?

A3: Duplex Steel offers excellent corrosion and stress corrosion cracking resistance, making it suitable for aggressive environments.

Q4: Which cities in India are served for supply?

A4: We supply across major Indian cities including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, and more.