Product Description
Welded Steel Tube ASTM A554 Welded Stainless Steel Mechanical Tubing
ASTM A554 WELDED STAINLESS STEEL MECHANICAL TUBING
As-welded or cold-reduced mechanical tubing.
Welded Steel Tube Shapes:
Round, Square, Rectangle, or special.
Welded Steel Tube Dimension:
OD ≤406.4mm
WT ≥0.51mm
Welded Steel Tube Grade:
MT-301, MT-302, MT-304, MT-309S
MT-310S, MT-316, MT-316L, MT-317
MT-321, MT-347, MT-430, MT-430i
Welded Steel Tube Materials and Manufacture:
The tubes are manufactured from flat-rolled steel by automatic welding process.
Welded Steel Tube Delivery Condition:
1. As welded
2. Welded and annealed
3. Cold reduced
4. Cold reduced and annealed
Welded Steel Tube Inside diameter bead:
a. Bead not removed
b. Bead controlled to 0.005 in. (0.13mm) or 15% of the specified wall thickness, whichever is greater
c. Bead removed
Welded Steel Tube Surface Finish:
Tubes surface are free of scale
Welded Steel Tube Packing:
In bundles with outside protection and seaworthy packing
Wooden box, crate, cartons, with a lifts on the bundles for easy loading and unloading
TABLE 1 Chemical Composition
|
Grade
|
Mfg.Process
|
Chemical composition(%)
|
|
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
Mo
|
|
MT301
|
E,AT
|
0.15max
|
1.00max
|
2.00max
|
0.040max
|
0.030max
|
6.0-8.0
|
16.0-18.0
|
----
|
|
MT302
|
E,AT
|
0.15max
|
1.00max
|
2.00max
|
0.040max
|
0.030max
|
8.0-10.0
|
17.0-19.0
|
----
|
|
MT304
|
E,AT
|
0.08max
|
1.00max
|
2.00max
|
0.040max
|
0.030max
|
8.0-11.0
|
18.0-20.0
|
----
|
|
MT304L
|
E,AT
|
0.035max
|
1.00max
|
2.00max
|
0.040max
|
0.030max
|
8.0-13.0
|
17.0-19.0
|
----
|
|
MT305
|
E,AT
|
0.12max
|
1.00max
|
2.00max
|
0.040max
|
0.030max
|
10.0-13.0
|
22.0-24.0
|
----
|
|
MT309S
|
E,AT
|
0.08max
|
1.00max
|
2.00max
|
0.040max
|
0.030max
|
12.0-15.0
|
22.0-24.0
|
----
|
SUPPLEMENTARY REQUIREMENTS:
S1 Hardness Test
S2 Tension Test
S3 Nondestructive Test
S4 Test Report
Referenced Documents:
ASTM Standards:
ASTM A370 Test Methods and Definitions for Mechanical Testing of Steel Products
ASTM E30 Test Methods for Chemical Anaysis of Steel, Cast Iron, Open-Hearth Iron
and Wrought Iron
ASTM E 59 Practice for Sampling Steel and Iron for Determination of Chemical Composition
Military Standards:
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage
Federal Standard:
Fed. Std. No. 123 Marking for Shipments
Referenced Documents:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
E30 Test Methods for Chemical Analysis of Steel,Cast Iron,Open-Hearth Iron,and Wrought Iron
E59 Method of Sampling Steel and Iron for Determination of Chemical Composition
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