Excellent quality 4140 4135 4130 Heat Treatment Alloy Seamless Steel Tube/ Seamless Steel Pipe/Seamless Pipe/Steel Pipe
Short Description:
We pursue the administration tenet of “Quality is top-quality, Services is supreme, Popularity is first”, and will sincerely create and share success with all clients for Excellent quality 4140 4135 4130 Heat Treatment Alloy Seamless Steel Tube/ Seamless Steel Pipe/Seamless Pipe/Steel Pipe, “Making the Products and solutions of Large Quality” may be the everlasting aim of our organization. We make unremitting efforts to recognize the intention of “We Will Always Keep in Pace with all the Time”.
We pursue the administration tenet of “Quality is top-quality, Services is supreme, Popularity is first”, and will sincerely create and share success with all clients for , We expect to provide solutions and services to more users in global aftermarket markets; we launched our global branding strategy by providing our excellent merchandise all over the world by virtue of our well reputed partners letting global users keep pace with technology innovation and achievements with us.
|
Standard |
Grade |
Chemical Components (%) |
|||||||
|
|
|
C |
Si |
Mn |
P |
S |
Mo |
Cr |
V |
|
ASTM A519 |
4130 |
0.28-0.33 |
0.15-0.35 |
0.40-0.60 |
≤0.040 |
≤0.040 |
0.15-0.25 |
0.8-1.10 |
/ |
|
Grade |
Delivery |
Tensile Strength |
Yield Strength |
Elongation |
Hardness |
|
|
Condition |
(Mpa) Min. |
(Mpa) Min. |
(%) Min. |
(HB) Min. |
|
4130 |
HR |
621 |
483 |
20 |
89 |
|
|
SR |
724 |
586 |
10 |
95 |
|
|
A |
517 |
379 |
30 |
81 |
|
|
N |
621 |
414 |
20 |
89 |
Annealing
After the goods are cold drawn to sizes, the tubes are put on annealing furnace for heat treatment and normalising.
Straightening
Post annealing, the goods are passed through a seven roller straightening machine to achieve proper straightening of the tubes.
Eddy current
Post straightening, each tube is passed through eddy current machine to detect for surface cracks and other defects . Only the tubes that pass eddy current are fit for delivery to customers.
Finishing
Each tube is either oiled with corrosion resistant oil or varnished for surface protection and corrosion resistant as per customers requirement, each tube end is covered by plastic end caps to avoid damage in transit, the marking and specs are put and the goods are ready for dispatch.
|
Designation |
Symbol |
Description |
|
Cold drawn/hard |
+C |
No heat treatment after the final cold drawing process |
|
Cold drawn/soft |
+LC |
After the final heat treatment there is a suitable drawing pass |
|
Cold drawn and stress relieved |
+SR |
After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere |
|
Annealed |
+A |
After the final cold drawing process the tubes are annealed in a controlled atmosphere |
|
Normalized |
+N |
After the final cold drawing operation the tubes are normalized in a controlled atmosphere |
Cold Drawn Carbon steel seamless pipes are extensively applied in the nuclear device, gas conveyance, petrochemical, shipbuilding and boiler industries, with characteristics of high corrosion resistance combined with suitable mechanical properties.
- Nuclear device
- Gas conveyance
We pursue the administration tenet of “Quality is top-quality, Services is supreme, Popularity is first”, and will sincerely create and share success with all clients for Excellent quality 4140 4135 4130 Heat Treatment Alloy Seamless Steel Tube/ Seamless Steel Pipe/Seamless Pipe/Steel Pipe, “Making the Products and solutions of Large Quality” may be the everlasting aim of our organization. We make unremitting efforts to recognize the intention of “We Will Always Keep in Pace with all the Time”.
Excellent quality Carbon Steel Pipe and Seamless Carbon Steel Pipe, We expect to provide solutions and services to more users in global aftermarket markets; we launched our global branding strategy by providing our excellent merchandise all over the world by virtue of our well reputed partners letting global users keep pace with technology innovation and achievements with us.
