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ASTM A691 Pipe

Solitaire Steel & Engineering LLP is a distinguished ASTM A691 Alloy Steel Pipe Manufacturer and Supplier in Mumbai, India, specializing in the production and supply of ASTM A691 Electric Fusion Welded (EFW) Alloy Steel Pipes. Our product range includes various grades such as 1-1/4CR, 2-1/4CR, 5CR, and 9CR, designed for high-temperature and high-pressure service applications. As a prominent ASTM A691 Pipe Stockist and Exporter, we are committed to meeting rigorous international standards and providing robust piping solutions to clients worldwide.

We proudly serve industries across multiple countries, including Finland, Netherlands, Denmark, Iran, Kenya, Sweden, Thailand, Indonesia, and Bangladesh. Our ASTM A691 Pipes are engineered for durability and high performance, making them ideal for critical applications in oil refineries, chemical plants, and power generation facilities. As trusted Suppliers, Exporters, and Dealers, Solitaire Steel & Engineering LLP ensures that each product meets stringent quality standards to support global infrastructure and industrial demands.

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At Solitaire Steel & Engineering LLP, we manufacture ASTM A691 pipes that are available in various grades and class designations to suit specific requirements. Our pipes are suitable for electric fusion welding processes and are fabricated from pressure-vessel-quality plates. With extensive options such as seamless and welded forms, these pipes are ideal for high-temperature and high-pressure applications, including petrochemical processing, industrial boilers, and power plant operations.

The ASTM A691 specification is recognized globally for its high standards, ensuring that our pipes meet the stringent demands of various industries, guaranteeing reliability and superior performance under extreme conditions. Our extensive inventory and commitment to quality make us a preferred choice for ASTM A691 Alloy Steel Pipes.

Our Supply Range for ASTM A691 Pipes

At Solitaire Steel & Engineering LLP, we offer ASTM A691 pipes with the following specifications to meet diverse industrial needs:

Grades: ASTM A691 Grades 1-1/4CR, 2-1/4CR, 5CR, 9CR, and 91, each engineered for high-pressure and high-temperature service.
Class Designations: Class 10, 11, 12, 22, 32, 42, and 52, depending on the required heat treatment, radiography, and pressure testing conditions.
Outer Diameter: Available in a wide range, from 1/2″ to 36″, ensuring flexibility for various applications.
Wall Thickness: Options include SCH 10, SCH 20, SCH 40, SCH 80, SCH 120, SCH 160, and even up to XXS for robust performance under demanding conditions.
Manufacturing Types: Fabricated from pressure-vessel-quality plates with options for Electric Fusion Welded (EFW), Seamless, and Welded types, offering both strength and reliability.
End Types: Choices include Plain, Beveled, and Threaded ends, tailored to client requirements.
Length: Available in Single Random Length (SRL), Double Random Length (DRL), 20 FT (6 meters), 40 FT (12 meters), and customized lengths to match specific project needs.
Surface Treatment: Options for Natural, Varnished, Black Paint, Zinc Coated, FBE (Fusion Bonded Epoxy), and 3LPE (3-Layer Polyethylene) coatings, ensuring corrosion resistance and extended durability.

Chemical Composition and Mechanical Properties for ASTM A691 Pipes

Chemical Composition for ASTM A691 Pipes (Typical)

Grade	Carbon (max)	Manganese (max)	Phosphorus (max)	Sulfur (max)	Silicon (max)	Chromium (%)	Molybdenum (%)	Vanadium (max)	Niobium (max)	Titanium (max)
1-1/4CR	0.15	0.65	0.025	0.025	0.80	1.00 – 1.50	0.45 – 0.65	–	–	–
2-1/4CR	0.15	0.60	0.025	0.025	0.50	2.00 – 2.50	0.90 – 1.10	–	–	–
5CR	0.15	0.60	0.025	0.025	0.50	4.00 – 6.00	0.45 – 0.65	–	–	–
9CR	0.15	0.60	0.025	0.025	1.00	8.00 – 10.00	0.90 – 1.10	0.04	–	–
91	0.08 – 0.12	0.60	0.020	0.010	0.50	8.00 – 9.50	0.85 – 1.05	0.18 – 0.25	0.06 – 0.10	–

Note: The specified chemical composition ensures durability and corrosion resistance, making ASTM A691 pipes suitable for high-stress, high-temperature environments.
Mechanical Properties for ASTM A691 Pipes

Grade	Yield Strength (MPa Min)	Tensile Strength (MPa Min)	Elongation % (Min)	Reduction of Area % (Min)
1-1/4CR	240	415 – 585	22	–
2-1/4CR	205	415 – 585	18	40
5CR	205	415 – 585	18	40
9CR	205	415 – 585	18	40
91	415	585 – 760	18	–

Note: These mechanical properties ensure that ASTM A691 pipes withstand high pressures and resist deformation, making them ideal for demanding industrial applications.

For additional reliability, our ASTM A691 pipes undergo extensive testing to confirm they meet these stringent requirements. This ensures that each pipe performs optimally in demanding industrial environments.

Testing and Quality Assurance for ASTM A691 Pipes

At Solitaire Steel & Engineering LLP, every ASTM A691 alloy steel pipe undergoes rigorous testing to ensure adherence to the highest international quality standards. Our quality assurance process is designed to verify the durability and reliability of each pipe, confirming its suitability for high-temperature, high-pressure applications. The key tests and quality assurance processes we follow include:

Hydrostatic Testing: This test subjects the pipes to high-pressure conditions to confirm that they are leak-free and can withstand the intense pressures typically encountered in industrial applications. This step is essential to ensure the structural integrity of ASTM A691 pipes, especially in environments where pressure resistance is critical.
Bend and Flattening Tests: These tests evaluate the flexibility and durability of ASTM A691 pipes, ensuring they can endure physical deformation during installation and in-service conditions without cracking. These properties are vital for maintaining pipe performance in industries where bending and handling stress are common.
Hardness Testing: Hardness testing verifies that each pipe meets specified hardness levels, essential for grades that are expected to perform under extreme stress. This test ensures the mechanical properties are within desired ranges, confirming suitability for high-stress applications like power generation and petrochemical processing.
Non-Destructive Examination (NDE): We employ advanced NDE techniques, including ultrasonic and radiographic testing, to detect internal and surface defects without affecting the structural integrity of the pipe. This method allows for a thorough inspection and ensures the pipe’s robustness and safety under operational conditions.
Tensile Testing: This test assesses the tensile strength and elongation properties of ASTM A691 pipes, ensuring they can withstand high-stress environments and retain their structural integrity during high-pressure applications. Tensile testing is particularly critical in determining the pipe’s durability and strength.
Impact Testing: Impact testing is performed to evaluate the pipe’s ability to endure sudden shocks and impacts, essential in dynamic industrial environments such as power plants, refineries, and chemical processing facilities. This test ensures that the pipes can perform reliably even in the most challenging conditions.

By implementing these stringent quality assurance processes, Solitaire Steel & Engineering LLP ensures that each ASTM A691 pipe meets and exceeds industry standards, delivering superior performance and reliability in high-demand sectors. Our commitment to quality assurance provides our clients with dependable alloy steel pipes engineered to excel in various demanding industrial applications.

Industry-Wise Applications of ASTM A691 Pipes

Power Generation Industry

Application: ASTM A691 pipes are critical in power plants for transporting steam, water, and gas, used across thermal, nuclear, and hydroelectric power plants for fuel management and cooling processes.
Process Specific Use:
- Steam Transmission: In thermal power plants, ASTM A691 pipes transport high-temperature steam from boilers to turbines. Grades like 1-1/4CR and 2-1/4CR are preferred due to their high pressure and temperature resistance.
- Cooling Systems: These pipes circulate cooling water to turbines and generators, ensuring efficient temperature control. Pipes with anti-corrosion coatings such as 3LPE or FBE are widely used.
Specification:
- Common Grades: 1-1/4CR, 2-1/4CR, 5CR
- Thickness: SCH 80 to SCH 160
- Size: 2” to 36”
- Surface Coating: 3LPE, FBE, and Concrete Weight Coating (CWC) for underwater applications in cooling systems.

Chemical & Petrochemical Industry

Application: ASTM A691 pipes are essential in chemical plants and refineries for transporting fluids under high pressure and extreme temperatures.
Process Specific Use:
- Process Piping: Utilized to convey chemicals within plants. ASTM A691 pipes with high corrosion resistance are ideal for preventing contamination. Grades like 5CR and 9CR are common in these settings.
- Refinery Piping: These pipes transport crude oil derivatives. Grades such as 9CR and 91 are favored for handling sour gases and aggressive chemicals.
Specification:
- Common Grades: 5CR, 9CR, 91
- Thickness: SCH 40 to SCH 80
- Size: 2” to 36”
- Surface Coating: 3LPE, CRA Clad, and 3PP for superior corrosion and chemical resistance.

Marine & Offshore Applications

Application: ASTM A691 pipes are widely used in marine environments, including offshore platforms and subsea pipelines for transporting oil and gas.
Process Specific Use:
- Subsea Pipelines: Grades like 2-1/4CR and 5CR are ideal for subsea pipelines, providing resilience against high-pressure and corrosive deep-sea conditions.
- Offshore Platforms: Used to transport oil and gas from rigs to processing units onshore, these pipes offer superior mechanical properties and corrosion resistance.
Specification:
- Common Grades: 2-1/4CR, 5CR, 9CR
- Thickness: SCH 80 to SCH 160
- Size: 10” to 40”
- Surface Coating: 3LPE, 3PP, and CWC to withstand the harsh marine environment.

Construction & Structural Applications

Application: ASTM A691 pipes serve structural purposes in construction projects, such as buildings, bridges, and foundations, due to their robustness and load-bearing capabilities.
Process-Specific Use:
- Foundation Piling: Used in pile foundations, especially with grades like 1-1/4CR, which offers excellent stability.
- Structural Supports: Employed in high-rise buildings and bridges, providing structural integrity. Grade 1CR is commonly used for cost-effective strength.
Specification:
- Common Grades: 1CR, 1-1/4CR
- Thickness: SCH 40 to SCH 80
- Size: 2” to 40”
- Surface Coating: Varnished or Painted for structural durability.

Oil & Gas Industry

Application: ASTM A691 pipes are widely used in the oil and gas sector for transporting crude oil, natural gas, and refined products, from extraction sites to refineries.
Process Specific Use:
- Upstream: Used in drilling operations, with grades like 1-1/4CR for durability under high-stress conditions.
- Midstream: Suitable for transporting crude oil and gas over long distances. Grades like 5CR and 9CR handle high pressures in harsh terrains.
- Downstream: Employed in transporting refined products like gasoline, meeting strict specifications for safety and corrosion resistance.
Specification:
- Common Grades: 1-1/4CR, 2-1/4CR, 5CR
- Thickness: SCH 40 to SCH 160
- Size: 1/2” to 40”
- Surface Coating: 3LPE, FBE, Varnished for corrosion protection.

Automotive Industry

Application: ASTM A691 pipes are utilized in the automotive industry, particularly for exhaust systems and fuel pipelines in large vehicles.
Process Specific Use:
- Exhaust Systems: ASTM A691 pipes, especially Grade 1CR, are chosen for their high heat resistance, crucial in exhaust systems.
- Fuel Lines: Used in fuel systems of large vehicles, ensuring safe fuel transport. Grades like 1-1/4CR provide strength for leak-proof fuel delivery.
Specification:
- Common Grades: 1CR, 1-1/4CR
- Thickness: SCH 20 to SCH 40
- Size: 1/2” to 6”
- Surface Coating: Varnished or Black Paint for corrosion resistance.

Price List for ASTM A691 Pipes

(Prices are approximate and subject to change based on specifications, bulk orders, and delivery conditions.)

Industry	Pipe Grade	Size Range (inches)	Thickness (SCH)	Price per Meter (INR)	Price per Meter (USD)	Surface Coating
Power Generation	1-1/4CR	4” to 24”	SCH 80	₹3,500 – ₹5,500	$45 – $70	FBE, 3LPE
	2-1/4CR	6” to 36”	SCH 160	₹6,500 – ₹9,500	$80 – $115	CWC, CRA Clad
Chemical & Petrochemical	5CR	2” to 20”	SCH 40	₹2,800 – ₹4,500	$35 – $55	CRA Clad, 3PP
	9CR	4” to 30”	SCH 60	₹4,000 – ₹7,000	$50 – $85	3LPE, FBE
Marine & Offshore	2-1/4CR	10” to 40”	SCH 120	₹7,500 – ₹10,500	$95 – $135	3PP, CWC
	9CR	12” to 48”	SCH 160	₹9,000 – ₹12,500	$110 – $155	3LPE, CRA Clad
Water & Sewage	1CR	1/2” to 10”	SCH 20	₹500 – ₹1,500	$6 – $18	Varnished, Black Paint
	1-1/4CR	4” to 20”	SCH 40	₹1,200 – ₹2,500	$15 – $30	3LPE
Construction & Structural	1CR	2” to 36”	SCH 40	₹1,000 – ₹2,200	$12 – $27	Painted, Varnished
	1-1/4CR	6” to 24”	SCH 60	₹1,800 – ₹3,500	$22 – $45	Black Paint, Varnished
Automotive	1CR	1/2” to 6”	SCH 20	₹400 – ₹800	$5 – $10	Varnished
	1-1/4CR	2” to 6”	SCH 40	₹800 – ₹1,500	$10 – $18	Black Paint

Key Pricing Factors for ASTM A672 Pipes

Pipe Grade: Higher grades, such as 2-1/4CR, 5CR, and 9CR, come at a premium due to their enhanced strength, resistance to high temperatures, and superior material composition.
Size: Larger diameter pipes (e.g., 10” and above) are more costly due to the additional materials and specialized manufacturing processes.
Thickness (SCH): Pipes with higher schedules (e.g., SCH 120 or SCH 160) are designed for high-pressure conditions and are priced accordingly.
Surface Coating: Advanced anti-corrosion coatings such as 3LPE, FBE, and CRA Clad add to the overall price due to the protection they provide in challenging environments.
Application: Industries with specialized needs, such as offshore drilling, power generation, and chemical transport, require higher-quality pipes, which is reflected in the pricing.

As a premier supplier and exporter of ASTM A691 pipes, Solitaire Steel & Engineering LLP caters to various industries worldwide, providing seamless and welded pipes that meet the rigorous demands of high-performance applications. We ensure timely delivery to key regions both domestically and internationally, supporting the growing demand for robust, high-quality steel pipes.

Delivery Conditions for ASTM A691 Alloy Steel Pipes

Our ASTM A691 alloy steel pipes are designed for high-temperature and high-pressure applications, tailored to meet the specific requirements of various demanding industries. Each grade of ASTM A691 pipe is produced under carefully controlled conditions to ensure durability, reliability, and superior performance. Below are the key delivery conditions for ASTM A691 alloy steel pipes, based on standard industry practices:

Heat Treatment: Depending on the grade, ASTM A691 pipes may undergo specific heat treatment processes to enhance their mechanical properties. Common treatments include normalizing and tempering to ensure the pipes offer high strength and stability under elevated temperatures and pressures. For higher grades, quenching and tempering may be applied to improve toughness and resistance to wear.
Normalization: Some grades require normalization, which involves heating the pipe to a high temperature and cooling it in air. This process enhances the pipe’s grain structure, providing uniform strength and stability, making the pipes suitable for moderate to high-temperature service environments.
Quenching and Tempering: Certain grades, such as those used in highly stressful applications, are quenched and tempered. This process involves heating the pipes, then rapidly cooling them (quenching) before reheating (tempering) to achieve the desired mechanical properties. This treatment is essential for improving strength and toughness, making ASTM A691 pipes reliable under high-stress conditions.
Post-Weld Heat Treatment (PWHT): For welded pipes, post-weld heat treatment is applied to relieve internal stresses from the welding process. This treatment is crucial for maintaining the integrity of the welded sections, especially in environments with high thermal or mechanical stresses. PWHT ensures that the welded areas meet performance standards and maintain durability.
Surface Condition: Based on the application requirements, ASTM A691 pipes are supplied in either their natural condition or with protective surface coatings. Options include pickling, polishing, and other coatings that enhance corrosion resistance, ensuring a long service life even in challenging environments, such as those with exposure to corrosive chemicals or high humidity.

Country and City Supply and Export of ASTM A691 Pipes

India

Mumbai, Delhi, Chennai, Kolkata, Ahmedabad
These industrial centers are experiencing growing demand for ASTM A691 pipes, especially in sectors like power generation, petrochemicals, and construction. Solitaire Steel & Engineering LLP ensures a consistent supply of ASTM A691 pipes to support the booming infrastructure projects in these regions.

United States

Houston, New York, Los Angeles, Chicago, Dallas
With a robust oil and gas industry, especially in Texas, the demand for ASTM A691 pipes is strong. Solitaire Steel & Engineering LLP exports high-quality fusion-welded pipes, adhering to ASTM standards, for applications in power plants, refineries, and petrochemical facilities.

Middle East

Dubai, Abu Dhabi, Riyadh, Doha
The Middle East remains a crucial market for ASTM A691 pipes due to its vast energy reserves and infrastructure development projects. We export durable pipes that are used in high-temperature and high-pressure applications, supporting the growth of the energy sector across the region.

Europe

Germany, Italy, France, United Kingdom
Europe’s ongoing investments in industrial and energy infrastructure have led to a significant demand for high-performance pipes. Solitaire Steel & Engineering LLP exports ASTM A691 pipes to meet the needs of large-scale projects across Europe, particularly in sectors like power generation and chemical processing.

Southeast Asia

Singapore, Malaysia, Indonesia, Thailand
As industrialization accelerates across Southeast Asia, the demand for ASTM A691 pipes is growing, particularly for power generation and chemical processing. Our supply chain serves these countries with pipes suited for high-pressure and high-temperature environments, ensuring reliable operation in critical industrial applications.

Africa

South Africa, Nigeria, Egypt
With expanding energy and infrastructure projects, Africa presents a promising market for ASTM A691 pipes. Solitaire Steel & Engineering LLP exports robust, corrosion-resistant pipes that meet the unique demands of projects in oil refineries, power plants, and industrial facilities across the continent.

Latin America

Brazil, Mexico, Argentina
Latin America’s growing industrial sectors, including oil, gas, and power, rely on high-strength pipes like ASTM A691. Our exports to this region support exploration, processing, and infrastructure construction, ensuring the longevity and durability required for demanding applications.

Partner with Solitaire Steel & Engineering LLP for high-quality ASTM A691 pipes that meet the stringent demands of your projects. Contact us today for a customized quote and expert guidance on your industrial pipe requirements. We provide quick delivery and complete support for all your high-pressure, high-temperature applications.

ASTM A691 Pipe

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Table of Contents

Call Us

Email Us

Our Supply Range for ASTM A691 Pipes

Chemical Composition and Mechanical Properties for ASTM A691 Pipes

Testing and Quality Assurance for ASTM A691 Pipes

Industry-Wise Applications of ASTM A691 Pipes

Power Generation Industry

Chemical & Petrochemical Industry

Marine & Offshore Applications

Construction & Structural Applications

Oil & Gas Industry

Automotive Industry

Price List for ASTM A691 Pipes

Delivery Conditions for ASTM A691 Alloy Steel Pipes

Country and City Supply and Export of ASTM A691 Pipes

India

United States

Middle East

Europe

Southeast Asia

Africa

Latin America

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