Manufacturer, Supplier & Exporter of Duplex Steel Plug

Duplex Steel Plugs are highly reliable and durable piping components manufactured using premium-grade duplex stainless steel, designed to offer superior corrosion resistance, mechanical strength, and thermal stability. Riddhi Siddhi Impex, a trusted manufacturer and supplier, ensures that every Duplex Steel Plug meets international quality standards, making it suitable for a wide range of industrial applications including oil & gas, petrochemical, chemical, and power industries..

Our Duplex Steel Plugs are available in both threaded and socket-weld configurations, offering flexibility for various piping systems. The plugs are manufactured through precision forging and machining processes to guarantee dimensional accuracy and a perfect fit, minimizing leakages and ensuring the longevity of the pipeline infrastructure..

Riddhi Siddhi Impex emphasizes the use of high-quality duplex steel grades such as 2205 and 2507, which provide excellent resistance against chloride stress corrosion cracking and pitting corrosion. This makes the plugs highly suitable for aggressive environments where standard austenitic stainless steel would fail, ensuring both safety and reliability...

As a prominent domestic supplier, Riddhi Siddhi Impex caters to clients across India, including major cities such as Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, and Nagpur. The company ensures timely delivery and excellent after-sales service to support operational efficiency in every project...

Duplex Steel Plugs are essential components in piping systems, engineered to provide reliable sealing and high corrosion resistance in industrial pipelines. Manufactured by Riddhi Siddhi Impex, these plugs are designed from premium duplex stainless steel, typically grades 2205 and 2507, which offer superior mechanical strength, excellent pitting and stress corrosion resistance, and high durability in aggressive environments. These characteristics make Duplex Steel Plugs ideal for use in oil and gas, petrochemical, chemical processing, water treatment, and power generation industries. The plugs are available in both threaded and socket-weld types, providing flexibility for various piping configurations, and are carefully machined to ensure precise dimensions and a leak-proof fit. Riddhi Siddhi Impex emphasizes stringent quality control at every stage of production, including raw material selection, forging, machining, heat treatment, and finishing, to guarantee consistent performance and compliance with international standards such as ASTM and ASME..

Duplex Steel Plug

Specification

Grade	Duplex Stainless Steel 2205 / 2507
Standard	ASTM A182 / ASME SA182
Size Range	1/2" to 12" (Custom sizes available)
Pressure Rating	Class 150#, 300#, 600#, 900#, 1500#
End Connections	Threaded / Socket Weld
Form	Plug (Threaded, Socket Weld, Hex, Square)

Chemical Composition

Element	Duplex 2205 (%)	Duplex 2507 (%)
Carbon (C)	≤ 0.03	≤ 0.03
Chromium (Cr)	21–23	24–26
Nickel (Ni)	4.5–6.5	6–8
Molybdenum (Mo)	2.5–3.5	3–5
Nitrogen (N)	0.08–0.20	0.24–0.32
Manganese (Mn)	≤ 2	≤ 2
Iron (Fe)	Balance	Balance

Mechanical Properties

Property	Duplex 2205	Duplex 2507
Tensile Strength	620–850 MPa	750–950 MPa
Yield Strength	450–620 MPa	650–800 MPa
Elongation	25–35%	15–25%
Hardness	80–90 HRB	85–95 HRB

Dimension Chart

Size (inches)	Threaded Plug Length (mm)	Socket Weld Plug Length (mm)
1/2"	38	40
3/4"	45	50
1"	50	55
2"	70	75
4"	95	100

Equivalent Grades

Standard	Duplex 2205	Duplex 2507
EN	1.4462	1.4410
ASTM	UNS S32205	UNS S32750
Other Standards	ASME, ISO, DIN	ASME, ISO, DIN

Equivalent Standards

Standard	Description
ASTM A182	Forged or rolled alloy & stainless steel pipe fittings
ASME SA182	Specification for stainless steel forged fittings and plugs

Other Types of Duplex Steel Plugs

Type	Description
Threaded Plug	Easy installation and removal for low to medium pressure systems
Socket Weld Plug	High strength welded connection suitable for high-pressure applications
Hex Plug	Standard hexagonal head for easy tightening with wrench
Square Plug	Square head for specialized fittings requiring manual torque

The Duplex Steel Plugs supplied by Riddhi Siddhi Impex are produced in multiple sizes and pressure classes to accommodate different pipe diameters and industrial requirements. Their robust design ensures they can withstand high pressures and temperatures, making them suitable for critical process lines. The plugs are especially resistant to chloride-induced stress corrosion cracking, pitting, and crevice corrosion, which are common issues in seawater, chemical, and offshore environments. This makes them highly reliable for long-term operation, reducing maintenance costs and minimizing the risk of unexpected failures. The versatility of these plugs allows them to be used in both small-diameter instrumentation lines and large-diameter process pipelines.

Frequently Asked Questions (FAQs)

Q1: What are the common applications of Duplex Steel Plug?

A1: It is widely used in chemical, petrochemical, oil & gas, water treatment, and power generation pipelines to block or seal pipe ends.

Q2: Can I get custom sizes and pressure ratings?

A2: Yes, Riddhi Siddhi Impex offers Duplex Steel Plugs in custom dimensions and pressure classes based on client requirements.

Q3: How corrosion-resistant is Duplex Steel Plug?

A3: Duplex Steel Plugs offer high resistance to pitting, crevice corrosion, and chloride stress cracking, making them suitable for aggressive industrial environments.

Q4: Which installation types are available?

A4: Duplex Steel Plugs are available in threaded, socket weld, hex, and square types for different piping systems.