St52 Cold Drawn Precision Seamless Alloy Steel Pipes
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
We have many excellent staff members good at marketing, QC, and dealing with kinds of troublesome problem in the production process for St52 Cold Drawn Precision Seamless Alloy Steel Pipes, We recognize your enquiry and it truly is our honor to work with each and every pal globally.
We have many excellent staff members good at marketing, QC, and dealing with kinds of troublesome problem in the production process for ST52 Seamless Steel Pipe, With excellent merchandise, high quality service and sincere attitude of service, we ensure customer satisfaction and help customers create value for mutual benefit and create a win-win situation. Welcome customers all over the world to contact us or visit our company. We are going to satisfy you with our expert service!
|
Standard |
Grade |
Chemical Components (%) |
|||||||
|
|
|
C (Max) |
Si(Max) |
Mn |
P |
S |
Mo |
Cr |
V |
|
DIN2391 |
ST52 |
0.22 |
0.55 |
≤1.60 |
≤0.025 |
≤0.025 |
0.90-1.20 |
/ |
/ |
|
Standard |
Grade |
Mechanical Properties（NBK) |
||
|
Tensile |
Yield |
Elonga-tion |
||
|
DIN2391 |
ST52 |
490-630 |
≥355 |
≥22 |
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
- Petrochemical industries
- Shipbuilding and boiler industries
We have many excellent staff members good at marketing, QC, and dealing with kinds of troublesome problem in the production process for High Quality for St52 Cold Drawn Precision Seamless Alloy Steel Pipes, We recognize your enquiry and it truly is our honor to work with each and every pal globally.
High Quality for China Seamless Steel Pipe and Round Seamless Steel Pipe, With excellent merchandise, high quality service and sincere attitude of service, we ensure customer satisfaction and help customers create value for mutual benefit and create a win-win situation. Welcome customers all over the world to contact us or visit our company. We are going to satisfy you with our expert service!
