ASTM A778 Stainless Steel Welded Tubes
Product Description
GNEE supplies ASTM A778 standard products that are manufactured using a shielded arc welding process to process flat rolled stainless steel sheets, coils or plates into pipes. It is used to regulate the production of welded, unannealed austenitic stainless steel pipes, common materials include TP304, TP304L, TP316 and TP316L, etc.
Schedule 5S ASTM A778 Welded Pipe
ASTM A778 Standard Specification For Welded, Unannealed Austenitic Stainless Steel Tubular
|
Tube Sizes |
3 In (75 Mm) To 48 In (1200 Mm) Od – 0.062 In (1.5 Mm) To 0.5 In (12.5 Mm) Wall Thickness |
|
Grades |
ASTM A778 TP304L,ASTM A778 TP316L,ASTM A778 TP317L,ASTM A778 TP321,ASTM A778 TP347 |
|
Length |
10 Ft (3 M) Lengths Or Over. |
|
Length Tolerances |
No Tube Shall Be More Than 0.25 In (6 Mm) Over That Specified. No Tube Shall Be Shorter Than Specified. |
|
Straightness |
0.25 In (6 Mm) Max Deviation From 10 Ft (3 M) Straight Edge. |
ASTM A778 Stainless Steel Welded Pipe Specifications
|
Nominal Pipe Size |
Outside Diameter |
Wall Thickness |
Inside Diameter |
Weight |
Grade |
|
3 |
3.500 |
0.083 |
3.334 |
3.029 |
304L/316L |
|
4 |
4.500 |
0.083 |
4.334 |
3.915 |
304L/316L |
|
5 |
5.563 |
0.109 |
5.345 |
6.349 |
304L/316L |
|
6 |
6.625 |
0.109 |
6.407 |
7.585 |
304L/316L |
|
8 |
8.625 |
0.109 |
8.407 |
9.914 |
304L/316L |
|
10 |
10.750 |
0.134 |
10.482 |
15.190 |
304L/316L |
|
12 |
12.750 |
0.156 |
12.438 |
21.070 |
304L/316L |
Comparison Of ASTM A778 Vs ASTM A312 Stainless Steel Welded Pipes
|
Comparison Item |
ASTM A778 |
ASTM A312 |
|
Product Condition |
As-welded (no annealing) |
Annealed (heat-treated) |
|
Common Wall Thickness |
Schedule 5S, 10S (thin-walled, ≤0.180" |
Schedule 40S, 80S (thick-walled, ≥0.237") |
|
Cost |
Lower (no annealing required) |
Higher (includes heat treatment) |
|
Material Grades |
304L, 316L (low-carbon for corrosion resistance) |
304, 304L, 316, 316L (various alloy options) |
|
Standard Version |
ASTM A778/A778M-24a |
ASTM A312/A312M-24 |
Why Choose GNEE
- Welding methods: TIG welding (argon arc welding), MIG welding or laser welding to ensure the quality of the weld.
- Testing standards: hydraulic test (1.5 times the working pressure), ultrasonic flaw detection (UT), penetrant testing (PT), provide material certification (MTR) and third-party test report.
ASTM A778 TP304L ERW Tube Manufacturer, Supplier
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