Cold rolled seamless carbon steel tube
Features:
a. High precision
b. Good brightness
c. No oxidize residual sbustance in inner and outer surface
d. Withstand high pressure
e. Nodeforamtion after cold banding
f. No crack and break after flattening and flaring
g. Good mechnical property
h. No deformation after bending at any angle
a. High precision
b. Good brightness
c. No oxidize residual sbustance in inner and outer surface
d. Withstand high pressure
e. Nodeforamtion after cold banding
f. No crack and break after flattening and flaring
g. Good mechnical property
h. No deformation after bending at any angle
Specifications
- Specification for normal pipe
- Outer Diameter: 4mm-50mm;Wall Thickness: 0.5mm-5mm
- Length: 4-12 Meters
- Specification for high pressure pip
- Outer Diameter: 6mm;6.36mm;7-17mm
- In Diameter: 1.0mm-3.0mm;3.0mm;4.0mm;5.0mm;6.0mm
- Length: 4-12 Meters
- Diameter tolerance
- 0.05mm (Enterprise internal control) or 0.03mm(Special high-precision)
- Surface treatment :
- 1. Bare Tube (No coating)-Bright and smooth; Surface Roughness: BK≤0.2Ra; NBK≤2Ra
- 2. Surface coating
- silver galvanized;yellow galvanized;olive green coated
- Layer thickness:8-25um; saity spray test: 48-150 hours
Features
- Application
- automotive pipeline system;
- hydraulic system of diesel engine and engineering machinery;
- hydraulic system of locomotive, aerospace and aviation,
- shipbuilding and various machinery;
- metal processing of wind power equipment;etc.
- Delivery condition
- a. BK(+C) Cold finished/hard (cold finished as drawn)
- No heat treatment after the last cold forming process
- b. BKW(+CC) Cold finished/soft (lightly cold worked)
- After the last heat treatment there is a light finishing pass (cold drawing)
- c. BKS(+SR) cold finished/stress relieve annealed
- After the final cold forming process the tubes are stress relieve annealed
- d. GBK(+A) Annealed
- After the final cold forming process the tubes are annealed in a controlled atmosphere
- NBK(+N) Normalized
- After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere
Certificate
- ISO9001:2008
Main Products
Seamless steel pipe