Seamless cold drawn steel tube +A heat treatment for automotitive
1. Automotive and mechanical pipes
2. Petroleum cracking pipes
3. Low and middle pressure fluid transportation pipeline
4. Chemical fertilizer equipment pipes
1. ASTM, ASME, API, ANSI and DIN standards.
2. ASTM A106 / A179 / A192 / A210 / A213 / A519 etc.
3. DIN2391 / DIN17175 / EN10305 / En10083 etc
4. GB8162 / GB8163 / GB3639 etc
Chemical composition and mechanical performance
|Steel Grade||Chemical composition (%)||Mechanical properties|
|C||Si||Mn||P||S||Cr||Tensile strength (MPa)||Yield strength (MPa)||Elongation (%)|
|1. BK (+C)||No heat treatment after last cold forming process.|
|2. BKW (+LC)||After last heat treatment there is a light finishing pass (cold
|3. BKS (+SR)||After the final cold forming process the tubes are stress relieve
|4. GBK (+A)||After the final cold forming process the tubes are annealed in a
|5. NBK (+N)|
After the final cold forming process the tubes are annealed above
the upper transformation point in a controlled atmosphere.
|Package||1. Bundle Packing.|
|2. Plain end or vanished as per customer's request.|
|3. Wrapped in waterproof paper.|
|4. Sackcloth with several steel strips.|
|5. Pack in heavy tri-wall boxes.|
Smooth, bright, oiled, painted, as customer's required.
Beveled end, plain end, vanished, or adding plastic caps to protect
the two ends as per customer's
|EQUIPMENT PRODUCTION||EUIPMENT TESTING|
|1.Cold Drawn Machine;||1.Chemical Analysis Instrument;|
|2.High Pressure Washing Platform;||2.Optical Spectrum Analyze;|
|3.Anaerobic Annealing Furance;||3.Eddy Current Detector;|
|4.Straightening Machine;||4.Mechanical Tester;|
|5.Polishing Machine.||5.Rockwell Harden Tester.|
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