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  • ASTM A312 TP347 steel  pipe
  • 347 stainless steel pipe
  • a312 tp347
  • TP347 steel pipe

ASTM A312 TP347 steel pipe

  • Material Standard: ASTM A312
  • Grade No.: TP347, UNS S34700, 1.4550
  • Type: Seamless & Welded tubes
  • End: Beveled End,Plain End


ASTM A312 TP347 is a standard specification for seamless, welded, and heavily cold worked austenitic stainless steel pipes. The stainless steel grade 347 used in the manufacture of these pipes is a stabilized stainless steel that provides excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500°F. ASTM A312 TP347 stainless steel pipes offer excellent resistance to intergranular corrosion and find applications in various industries due to their wide range of sizes and customizations. The pipes go through rigorous testing to ensure they meet industry standards and are of the required quality.

ASTM A312 TP347 Erw / Welded Pipes

  • Size: 1/8” - 36” NB, 1/4” - 36” OD

  • OD: 6.35 - 114.3 mm

  • Thickness : 0.8 - 12.7 mm

  • Length: up to 26 Meters

Specification Chart of ASTM A312 TP347

Specification as per American standard ASTM A312 / ASTM SA312
ANSI Standard ANSI/ASME B36.19M, ANSI/ASME B36.10M
Shapes and Types Hydraulic, Rectangle, Honed, Square, Hex, Round
Available Shapes and Types ERW, Fabricated, 100% X Ray Welded, CDW, Seamless, Welded
Pipe End Finishing Bevel one end, Bevel large end, Plain One End, Bevel small end, Treaded Both Ends, Beveled end, Plain Both Ends, Bevel both ends, Treaded On End, Beveled One End
Types of Delivery Conditions Annealed and Pickled, Bright Annealed, Polished, Cold Drawn
Surface Condition 2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements
Pipe Wall Thickness Chart SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Services for oil gas pipelines Machining, Export Documentation, Non MTR’s Available, Material testing, Color Coding, Destructive, Beveling, Destructive, Customer Tagging/ Marking, Grooving, Ultrasonic Testing, Polishing, Export Packaging, Cutting, Threading, Threading
Marking we do on SS 347 Pipe
  1. Specification

  2. Material Grade

  3. Nominal Pipe Sizes (NPS)

  4. Pipe Schedule or Wall Thickness

  5. Manufacturing Method (Seamless / Welded)

  6. Heat Number

  7. Manufacturer’s Name or Custom Logo - on request

Marked Pipe example: ANSI B36.19 ASTM A312 TP347 12" NB SCH 40S SEAMLESS HEAT NO. XXXX

ASTM A312 SS 347 stainless steel Pipe Mechanical Characteristics

AISI Tensile Strength minimum (MPa) Yield Strength 0.2% Proof minimum (MPa) Elongation minimum (% in 50mm) Hardness
Rockwell B (HR B) maximum Brinell (HB) maximum
347 515 205 40 95 201

A312 TP347 Composition Analysis

ASTM A312 Mn Si C Ni P S Cr Mo N
TP347 min. - - - 9.0 - - 17.0 2.00 -
max. 2.0 1.00 0.08 13.0 0.045 0.030 20.0 3.00 -

Equivalent of SA 312 TP 347 stainless steel Pipe

ASTM A312 347 S34700 1.4550 - - - 08Ch18N12B X6CrNiNb18-10 -

The applications of ASTM A312 TP347 stainless steel pipes are vast and varied. They are used in industries such as chemical processing, petrochemicals, power generation, food processing, and many others. In chemical processing industries, these pipes find application in the transfer of acids, alkalis, and other corrosive chemicals. In the food processing industry, they are used in the transfer of edible oils, fats, dairy products, and many others.
To ensure the quality of the pipes, ASTM A312 TP347 goes through several tests such as hydrostatic testing, non-destructive testing, eddy current testing, and many others. These tests help to ensure that the pipes are of the desired quality and free from any defects such as cracks or voids.

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