ASTM A789 Tube

Supplier of ASME SA 789 Boiler Tube and ASTM A789M Condenser Tube in India

Table of Content

• ASTM A789 Tube Specification
• SA 789 Seamless Tube Working Pressure
• ASTM A789 Tubes Sizes
• Benefits of ASTM A789 Pipe
• What are the 3 chemicals that are not suitable for ASTM A789 tubing
• ASTM A789 Tube Chemical Composition
• Hardness and tensile properties of ASTM A789 Pipe
• ASTM A789 Equivalent Material

• Why Saudi Arabia used ASTM A789 Tubes for petroleum industry
• Heat Treatment of ASTM A789 Tube
• How to choose between seamless and welded ASTM A789 duplex steel tubes?
• Testing performed by ASTM A789 Tube manufacturers in India
• Which certificates of ASTM A789 Austenitic Stainless Steel Tubing provide at the time of delivery
• Why hydrostatic test required for ASTM A789 Seamless Pipe?

A789 Heat Exchanger Tube are Widely Used for High Corrosive Conditions

ASTM A789 Tube Specification

OD

• ASME SA 789 seamless Tube : 4 to 219 mm
• A789 welded Tube : 5 to 1219.2 mm

Wall thickness

• 0.035" to 0.134"
• Thinner wall thickness

Length

• 6 meters (21 feet)
• Customized/ cut to size

ID

• ID : 8.8 TO 150.0

Custom size/ cut to length

• Mail us at info@namanpipe.com

Schedule chart

• SCH5 to SCH XXS

Need urgent delivery

• Get Quick Quote & delivery by Air, mail us at info@namanpipe.com

Manufacturing type

• Seamless
• ERW
• Welded
• EFW

Elastic modulus of ASTM A789 Tube

• 200 GPa 

Delivery time (If not in Stock)

• 10-12 days

Inventory delivery time

• 3-5 days

A789 Boiler Tubes treatment

• Annealed
• Aging
• Solution Annealed

MTC

• EN 10204 type 3.1

Manufacturing process

• Hot finished
• Cold finished

Manufacturing tolerance

• ±12.5%

SA 789 Round Tube pickling and passivation

• ASTM A380 (descaled and acid cleaned)
• Pickling not required for Machined surface

Delivery state choice

• Pickled
• Polished
• Annealed
• Cold rolled / cold drawn
• Sand blasted

ASTM A789M Bright Annealed Tube surface finish

• Pickled
• Cleaned
• Passivated
• Precleaned

Value added services offer by Naman pipe & tubes

• Ultrasonic Testing
• Polishing
• Cutting
• Beveling
• Destructive & Non Destructive
• Threading

SA 789 Welded Tube Welding methods

• TIG
• SAW welding
• GTAW welding
• Plasma

Marking as per MSS-SP-25

• Heat Number & Batch Number.
• The nominal pipe size (NPS).
• Identification and marking of pipe
• Specification and grade of material.
• A789 pipe shall be marked by vibro-etching.
• Sizes & wall thickness

Mechanical test of ASTM A789M Hot Drawn Tubes

• 100% PMI tested
• Hardness test
• Tension test
• Reverse flattening test
• Flange test
• Flaring test

Origin of material

• Ukraine
• Indian
• European
• Japanese
• USA
• Korean
• Russian

Uses & applications

• Heat exchangers
• Offshore platforms
• Injection & ballast water systems
• Fire-fighting systems

View a latest price list of ASTM A789M Bright Annealed and Instrumentation Tube

SA 789 Seamless Tube Working Pressure

Check sizes and wall thickness of ASME SA 789m Welded and Condenser Tube

• Lower price of A789 pipe in Mumbai
• Better price stability
• ASTM A789 Tube material have higher strength leading to weight saving
• Greater corrosion resistance particularly stress corrosion cracking
• SA 789 Pipe have high corrosion resistance
• ASTM A789 Tube known for extended long life durability
• Double the strength of austenitic stainless steels
• Improved resistance to stress corrosion cracking
• SA 789 Tubing Can be used in harsh environments such as seawater
• Low thermal expansion

• 1. H2SO4 - Sulfuric Acid
• 2. HCl - Hydrochloric Acid
• 3. HF - Hydrofluoric Acid

Refer Yield and Tensile strength of SA 789 Electropolish and Round Tube

• Seamless : For high-pressure applications
• Welded : Suitable for lower pressure applications

• Tension Tests
• Flaring Test (for ASTM A789/ 1789m Seamless Tubes)
• Flange Test (for ASTM A789/ 1789m Welded Tubes)
• Brinell or Rockwell hardness tests
• Reverse Flattening Test

• Mill Test Certificate
• Mechanical Test Report
• Chemical Analysis Report
• Dimensional Inspection Report
• NDT Test Report
• Inspection Certificate
• Heat Treatment Certificate
• Traceability Certificate
• Packing List

A type of pressure test used to check the strength and leaks of pipeline, pressure vessels, piping, and fuel tanks