China Factory for ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tube
Short Description:
So as to give you ease and enlarge our company, we also have inspectors in QC Team and assure you our greatest support and product or service for China Factory for ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tube, Our business eagerly looks ahead to creating long-term and pleasant business partner associations with customers and businessmen from everywhere in the world.
So as to give you ease and enlarge our company, we also have inspectors in QC Team and assure you our greatest support and product or service for , We have been in operation for more than 10 years. We have been dedicated to quality products and consumer support. We currently own 27 product utility and design patents. We invite you to visit our company for a individualized tour and advanced business guidance.
|
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
So as to give you ease and enlarge our company, we also have inspectors in QC Team and assure you our greatest support and product or service for China Factory for ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tube, Our business eagerly looks ahead to creating long-term and pleasant business partner associations with customers and businessmen from everywhere in the world.
China Factory for A519 1020 Carbon Steel Seamless Pipe and A519 4130 Seamless Carbon Steel Pipe, We have been in operation for more than 10 years. We have been dedicated to quality products and consumer support. We currently own 27 product utility and design patents. We invite you to visit our company for a individualized tour and advanced business guidance.
