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
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 |
-
Specification
-
Material Grade
-
Nominal Pipe Sizes (NPS)
-
Pipe Schedule or Wall Thickness
-
Manufacturing Method (Seamless / Welded)
-
Heat Number
-
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
| GRADE |
UNS |
WERKSTOFF NR. |
JIS |
AFNOR |
BS |
GOST |
EN |
SS |
| |
USA |
GERMAN |
JAPAN |
RUSSIAN |
BRITISH |
RUSSIAN |
EUROPE |
SWEDISH |
| 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.
