High reputation Seamless and Welded Steel Pipe/ Tube
Short Description:
Cold drawn seamless steel pipe is made from a seamless steel hollow. It is further processed by cold drawing over a mandrel, to control the ID, and through dies to control the OD. CDS is superior in surface quality, dimensional tolerances and strength when compared to hot finished seamless tubing.Due to the characteristics of high-precision, in precision machinery manufacturing, auto parts, hydraulic cylinders, construction (steel sleeve) industry has a very wide range of applications.
Size: 16mm-89mm.
W.T.: 0.8mm-18 mm.
Shape: Round.
Production type: Cold drawn or cold rolled.
Length: Single random length/ Double random length or as customer’s actual request max length is 10m
It is a good way to boost our products and solutions and repair. Our mission is always to establish artistic products and solutions to consumers having a excellent expertise for High reputation Seamless and Welded Steel Pipe/ Tube, We encourage you to make get in touch with as we’re hunting for companions inside our venture. We have been sure you’ll discover doing company with us not only fruitful but also profitable. We are all set to provide you with what you require.
It is a good way to boost our products and solutions and repair. Our mission is always to establish artistic products and solutions to consumers having a excellent expertise for China DIN 1654 Alloy Steel Pipe and Heat Resistant Alloy Pipe, All of our solutions comply with international quality standards and are greatly appreciated in a variety of markets around the world. If you are interested in any of our products or would like to discuss a custom order, be sure to feel free to contact us. We’ve been looking forward to forming successful business relationships with new clients in the near future.
|
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
It is a good way to boost our products and solutions and repair. Our mission is always to establish artistic products and solutions to consumers having a excellent expertise for High reputation Seamless and Welded Steel Pipe/ Tube, We encourage you to make get in touch with as we’re hunting for companions inside our venture. We have been sure you’ll discover doing company with us not only fruitful but also profitable. We are all set to provide you with what you require.
High reputation China DIN 1654 Alloy Steel Pipe and Heat Resistant Alloy Pipe, All of our solutions comply with international quality standards and are greatly appreciated in a variety of markets around the world. If you are interested in any of our products or would like to discuss a custom order, be sure to feel free to contact us. We’ve been looking forward to forming successful business relationships with new clients in the near future.
