3) Seamless and welded pipe
Grade
|
Condition
|
Manufacturing Method
|
OD
|
Wall Thickness
|
Long
|
Standard
|
Gr1
Gr2
|
Annealed
|
Cold rolling
Seamless
|
10-15MM
|
0.5-4.5 MM
|
500-4000MM
|
ASTM B337
ASTM B338
|
15-20MM
|
0.6-2.5 MM
|
500-9000MM
|
20-30MM
|
0.6-2.5 MM
|
30-40MM
|
1.0-2.5 MM
|
40-50MM
|
1.5-3.0 MM
|
50-60MM
|
1.5-3.5 MM
|
60-80MM
|
2.0-4.5 MM
|
Welded
|
16MM
|
0.5-1.0 MM
|
500-15000MM
|
19MM
|
0.5-1.25MM
|
25 27MM
|
0.5-1.5 MM
|
500-6000MM
|
31 32 33MM
|
0.8-2.0 MM
|
38MM
|
1.5-2.5 MM
|
500-4000MM
|
50MM
|
2.0-2.5 MM
|
63MM
|
2.0-2.5 MM
|
Welded
-------
Rolling
|
6-10MM
|
0.5-1.25 MM
|
500-8000MM
|
10-15MM
|
0.5-1.5 MM
|
15-20MM
|
0.5-2.0MM
|
500-5000MM
|
20-25MM
|
0.5-2.0 MM
|
25-30MM
|
0.5-2.0MM
|