duplex stainless steel pipes

Duplex Stainless Steel Pipes Manufacturer In India

Duplex Stainless Steel Pipes Manufacturer In India

Introduction to Duplex Stainless Steel Pipes

Duplex stainless steel pipes are renowned for their unique combination of austenitic and ferritic stainless steel properties, offering superior strength and corrosion resistance. This guide delves into various aspects of duplex stainless steel pipes, including types, grades, and applications, to help you understand why they are a preferred choice in many industries.

Key Characteristics and Benefits

  • High Strength and Durability: Duplex stainless steels, such as Duplex 2205 (UNS S31803/32205) and Super Duplex 2507 (UNS S32750/32760), offer twice the strength of regular austenitic or ferritic stainless steels. This makes them ideal for applications requiring high durability and resistance to mechanical stress.
  • Excellent Corrosion Resistance: Duplex steels are highly resistant to various forms of corrosion, including stress corrosion cracking, pitting, and crevice corrosion. This makes them suitable for harsh environments such as chemical processing, marine, and oil and gas industries.
  • Cost Efficiency: Despite their superior properties, duplex stainless steels are more cost-effective due to lower nickel and molybdenum content compared to traditional austenitic stainless steels. This results in reduced material costs and increased economic efficiency.

Popular Grades and Specifications

  • Duplex 2205: One of the most common duplex stainless steels, Duplex 2205 is widely used for its excellent balance of strength and corrosion resistance. It meets ASTM A790 and A815 standards and is ideal for chemical processing and marine applications.
  • Super Duplex 2507: Known for its enhanced corrosion resistance and strength, Super Duplex 2507 is used in more demanding environments, such as offshore oil and gas platforms. It complies with ASTM A790 and A928 standards.

Applications of Duplex Stainless Steel Pipes

Duplex Stainless Steel Pipes

Duplex stainless steel pipes are utilized across various industries due to their robust properties:

  • Oil and Gas Industry: Used in pipelines, heat exchangers, and structural components due to their high resistance to corrosive environments.
  • Chemical Processing: Employed in processing equipment, tanks, and piping systems where high resistance to chemical attack is essential.
  • Marine and Desalination: Ideal for shipbuilding, marine environments, and desalination plants because of their excellent resistance to seawater corrosion.
  • Construction: Used in structural applications requiring high strength and durability, such as bridges and high-rise buildings.

Standards and Specifications

Several ASTM standards govern the production and quality of duplex stainless steel pipes:

  • ASTM A790: Covers seamless and welded duplex and super duplex stainless steel pipes.
  • ASTM A928: Pertains to welded duplex stainless steel pipes with specific requirements for electric fusion welding.
  • ASTM A815: Specifies requirements for duplex stainless steel fittings, ensuring proper material properties and performance.

Duplex stainless steel pipes offer an exceptional combination of strength, durability, and corrosion resistance, making them a versatile choice for numerous industrial applications. At Sachiya Steel International Private Limited, we pride ourselves on being India’s leading manufacturer of duplex pipes, providing high-quality products that meet stringent industry standards.

By |2024-08-08T13:12:12+05:30August 8th, 2024|Pipes|

Duplex Steel Pipes Manufacturers In India

Duplex Steel Pipes Manufacturers In India

Sachiya Steel International Is a  manufactures and Supplier of quality assortment of duplex steel pipes and tubes, Duplex Stainless Steel Pipes Are  widely used in construction and other industries. These pipes and tubes are available in various grades, specifications, sizes and thicknesses as per customer requirements. These pipes are highly appreciated by   our customers for their smooth finish, durability, dimensional accuracy and corrosion resistance. We provide these pipes and tubes to our customers at the best price in the market.

Duplex Steel Pipes Specification

Standard : ASTM / ASME SA 790. SA 789 , SA 790
Grade : UNS NO. S 31803, S 32205
Type : SEAMLESS / ERW / WELDED/ FABRICATED
Length : Single Random, Cut Length
End : Plain End, Beveled End, Threaded

Types of Duplex Steel Pipes & Tubes

  • Duplex Steel UNS S31803 Pipe and Tubes
  • UNS S32205 Pipes & Tubes
  • Duplex Steel SAF 2205 Pipes & Tubes

Duplex Steel Pipes

 

 

Due to the need to overcome the shortcomings of austenitic and ferritic steels, duplex steels have appeared on the market. It was found that a mixture of these two materials resulted in higher strength, reduced weight, good weldability, and improved resistance to stress corrosion cracking.

 

 

 

Chemical Composition of Super Duplex Stainless Steel Butt weld Fittings

C Mn Si P S Cr Mo Ni N Fe
0.030 max 1.20 max 0.80 max 0.035 max 0.020 max 24.00 – 26.00 3.00 – 5.00 6.00 – 8.00 0.24 – 0.32 58.095 min
0.05 max 1.00 max 1.00 max 0.030 max 0.010 max 24.00 – 26.00 3.00 – 4.00 6.00 – 8.00 0.20 – 0.30
57.61 min

Mechanical Properties of ASTM A815 Super Duplex Steel Butt weld Pipe Fittings

Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S32750 / S32760         7.8       0.281          1350
    2460

 

Duplex Steel Pipes Packaging

inconel pipe wooden packing inconel pipe packing

Duplex steel Pipes  may be furnished bare or coated and with capped ends. pipes up to 3” OD will be supplied in bundles. In order to prevent rust during sea shipment, bundles of Alloy 20 Seamless Pipe may be wrapped with polypropylene sheets, and secured with flat steel bands. Over 3” OD will be supplied loose.

Duplex Stainless Steel  Pipes Application Industries

  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry

Material Testing

We at  Sachiya Steel International  ensure that all our materials go through strict quality tests before dispatching them to our clients.

  • Mechanical Testing Such as Tensile of Area
  •  Hardness Test
  •  Chemical Analysis – Spectro Analysis
  •  Positive Material Identification – PMI Testing
  • Flattening Test
  •  Micro and Macro Test
  •  Pitting Resistance Test
  •  Flaring Test
  •  Intergranular Corrosion (IGC) Test

Documentation

  • Commercial Invoice which includes HS Code
  • Packing List including net weight and gross weight, number of boxes, Marks and Numbers
  • Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
  • Fumigation Certificates
  • Raw Material Test Reports
  • Material Traceability Records
  • Quality Assurance Plan (QAP)
  • Heat Treatment Charts
  • Test Certificates certifying NACE MR0103, NACE MR0175
  • Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
  • Guarantee Letter
  • NABL approved Laboratory Test Reports
  • Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
  • Form A for the purposes of the Generalized System of Preferences (GSP)

Duplex  Steel Pipes Test Certificates

We at  Sachiya Steel International  provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.

  • EN 10204/3.1B,
  • Raw Materials Certificate
  • 100% Radiography Test Report
  • Third Party Inspection Report, etc

Country’s We Export

Venezuela, Iraq, United Kingdom, Russia, United Arab Emirates, Croatia, Indonesia, Oman, Kazakhstan, Israel, Kenya, Iran, Bahrain, Bhutan, Colombia, Serbia, Pakistan, Czech Republic, Turkey, Ukraine, Poland, Bulgaria, France, Chile, Slovakia, Belgium, Iran, Ireland, Qatar, Sri Lanka, Sweden, Brazil, Bolivia, Taiwan, Jordan, South Africa, Switzerland, Tibet, Norway, India, Ghana, Costa Rica, Hungary, New Zealand, Vietnam, Ecuador, Afghanistan, Algeria, Peru, Netherlands, Argentina, Austria, Malaysia, Thailand, Portugal, Zimbabwe, Mongolia, Lebanon, Trinidad & Tobago, Tunisia, Mexico, Greece, Angola, Hong Kong, Denmark, Nepal, Finland, Chile, Poland, Yemen, Nigeria, Italy, Bangladesh, Australia, Macau, Azerbaijan, Saudi Arabia, Japan, Gabon, Philippines, Singapore, United States, Namibia, Romania, South Korea, Germany, Puerto Rico, Estonia, Morocco, Belarus, Nigeria, Mexico, Spain, China, Canada, Libya, Lithuania, Kuwait, Gambia, Egypt.

By |2024-05-30T15:19:08+05:30December 27th, 2019|Pipes|
Go to Top