ASTM A192/Seamless Carbon /Bolier Tube Steel Pipe/Round Seamless Steel Pipe
Short Description:
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we can easily offer you high-quality products and solutions, competitive rate and very best shopper support. Our destination is “You come here with difficulty and we give you a smile to take away” for Seamless Tube and Alloy Steel Pipe, Since always, we adhering to the “open and fair, share to get, the pursuit of excellence, and creation of value”values, adhere to the”integrity and efficient, trade-oriented, best way , best valve” business philosophy. Together with our all over the world have branches and partners to develop new business areas, maximum common values. We sincerely welcome and together we share in global resources, opening up new career together with the chapter.
Manufacture: Seamless process ,Hot-finished or Cold-finished.
Wall thickness(WT): 3.2 mm——21 mm.
Outer diameter (OD): 33 mm——323 mm.
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded.
Port of Shipment: Tianjin, China.
Payment Terms:T / T, LC.
Delivery: 7-15 days after payment.
Surface: Tubes will be varnished (Outside only) to prevent rust.
Marking: Standard + Steel Grade + Size + Heat No + Lot No.
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required.
(1)Method of manufacturing steel
Steel are manufactured by electric furnace, oxygen converter or open hearth method.
(2)Manufacturing method of tube blank
The tube blank can be produced by a hot rolling method, and a continuous casting billet or a steel ingot can also be used.
(3)Manufacturing method of steel pipe
The steel pipe can be manufactured by a hot rolling (extrusion, expansion) or cold drawing (rolling) seamless method.
|
Standard |
Steel Grade |
C |
Si |
Mn |
S |
P |
Cr |
|
GB 3087 |
10 |
0.07-0.13 |
0.17-0.37 |
0.35-0.65 |
0.02 |
0.025 |
≤0.15 |
|
20 |
0.17-0.23 |
0.17-0.37 |
0.35-0.65 |
0.02 |
0.025 |
≤0.25 |
|
Standard |
Steel pipe |
Wall thickness |
Tensile strength |
Yield Strength |
Elongation |
|
(mm) |
(MPa) |
(MPa) |
% |
||
|
|
|
≥ |
|||
|
GB3087 |
10 |
/ |
335-475 |
195 |
24 |
|
20 |
＜15 |
410-550 |
245 |
20 |
|
|
≥15 |
225 |
||||
|
Type of steel pipe |
Outer diameter(mm) |
Tolerance |
||
|
ordinary |
advanced |
|||
|
Hot rolled tube |
OD |
≤159 |
±10%（min±0.50mm） |
±0.75%(min±0.40mm) |
|
＞159 |
±1.0% |
±0.90% |
||
|
WT |
≤20 |
＋15.0%(min＋0.45mm) |
±10%（min±0.30mm) |
|
|
＞20 |
±12.5% |
±10% |
||
|
OD≥351 |
±15% |
|||
|
Cold drawn tube |
OD |
10～30 |
±0.40mm |
±0.20mm |
|
＞30～50 |
±0.45mm |
±0.25mm |
||
|
＞50 |
±1.0% |
±0.75% |
||
|
WT |
1.5～3.0 |
+15% |
±10% |
|
|
＞3.0 |
+12.5% |
±10% |
||
(1)Hydraulic test
The steel pipe should be hydraulically tested one by one.
(2)Flattening test
Steel pipes with an outer diameter of more than 22mm to 400mm and a wall thickness of not more than 10mm shall be subjected to a flattening test.
(3)Flaring test
The steel pipe with a wall thickness of not more than 8 mm can be subjected to a flare test with a top taper of 30°, 45° or 60°.
(4) Bending test
Steel pipes with an outer diameter of not more than 22 mm will be subjected to a bending test.
(5)Non-destructive testing
According to the requirements of the purchaser, the steel pipe will be ultrasonically tested one by one.
The inner and outer surfaces of the steel pipe do not have cracks, folds, creases, crusting or separation, and these defects should be completely removed. The clearance depth shall not exceed the negative deviation of the nominal wall thickness, and the actual wall thickness at the cleaning site shall not be less than the minimum allowed by the wall.
The packaging, marking and quality specifications of steel pipes shall comply with the provisions of GB/T 2102.
we can easily offer you high-quality products and solutions, competitive rate and very best shopper support. Our destination is “You come here with difficulty and we give you a smile to take away” for OEM/ODM Manufacturer ASTM A192/Seamless Carbon /Bolier Tube Steel Pipe/Round Seamless Steel Pipe, Your inquiry will likely be remarkably welcomed in addition to a win-win affluent development are what we’ve been anticipating.
OEM/ODM Manufacturer Seamless Tube and Alloy Steel, Since always, we adhering to the “open and fair, share to get, the pursuit of excellence, and creation of value”values, adhere to the”integrity and efficient, trade-oriented, best way , best valve” business philosophy. Together with our all over the world have branches and partners to develop new business areas, maximum common values. We sincerely welcome and together we share in global resources, opening up new career together with the chapter.
