ST 52 hollow circular steel pipe E235 cold rolled carbon steel pipe

ST 52 hollow circular steel pipe / E235 cold rolled carbon steel pipe
ST52 Alloy Steel Pipe TubeChemical Composition(%)Mechanical PropertyCSiMnSPCrNiCuMoYield StrengthTensile Strength( σs )( σb )0.12~0.200.20~0.55 1.20~1.60≤0.04≤0.35≤0.30275~345 (MPa)470~660(MPa)End ShapeBeveled end, plain end, vanished, or adding plastic caps to protect the two ends as per customer's requirementsSurfaceOiled, Galvanized, Phosphate etcTreatmentTechniqueCold drawnApplication1. Automotive and mechanical pipes2. Petroleum cracking pipes3. High Pressure Boiler Pipe4. Low and middle pressure fluid transportation pipeline5. Chemical fertilizer equipment pipes6. Heat exchanger pipesDelivery1. BK (+C)No heat treatment after last cold forming process.Conditions2. BKW (+LC)After last heat treatment there is a light finishing pass (cold drawing) 3. BKS (+SR)After the final cold forming process the tubes are stress relieve annealed. 4. GBK (+A)After the final cold forming process the tubes are annealed in a controlled atmosphere. 5. NBK (+N)After the final cold forming process the tubes are annealed above the upper transformation point in acontrolled atmosphere.Package1. 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.
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Product Description
Company Information
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Qualification
1.We adopt special techniques and special skills in the acid cleaning process to deal with the place where it is easy to form fold crevice;
2.Well organized process,especially annealing treatment in a severely technical manner;
3.In respect with lubrication, we adopt the international advanced level treating process in the world, and put the surface quality of our products under strict control in order to prevent causing surface crack.
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ST52 carbon steel tube ST52 carbon steel tube ST52 carbon steel tubeST52 carbon steel tubeST52 carbon steel tube ST52 carbon steel tubeST52 carbon steel tube
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