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| Seamless steel pipes are derived from solid steel that is in sheet or bar form and is formed into a solid round shape known as “billets” which are then heated and cast over a form such as a piercing rod to create a hollow tube or shell, the steel pipe without weld seam on the surface is called seamless steel pipe. |
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Product Name
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Seamless steel pipe
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Out Diameter
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1/2 inch - 36 inch (21.3mm-914.4mm) or customization
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Thickness
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2.11mm-60mm or customization
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Length
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1-12m or customization or customization
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Protection
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Plastic caps
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Pipe ends
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Plain, beveled, threaded, socket with holes, with PVC clap / coupling / clamp or as customers requirement
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Technique
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Hot Rolled, Cold Rolled, Cold Drawn
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Standards
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API / 5L / API / 5CT / ASTM / ASME / DIN / BS
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Packing terms
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Labeled and bundled together with steel strip
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Surface Treatment
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1. Galvanized
2. PVC,Black and color painting
3. Transparent oil,anti-rust oil
4. According to clients requirement
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Product Application
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1. Fence, greenhouse, door, greenhouse
2. Low pressure liquid, water, gas, oil, line pipe
3. For both indoor and outdoor the building construction
4. Widely used in scaffolding construction which is much cheaper and convenient
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Seamless steel pipe round
Round Pipe Billet → Heating → Punching → Three-Roller Skew Rolling, Continuous Rolling or Extruding → Pipe Detaching → Micro Tension Sizing or Reducing → Cooling → Straightening → Hydrostatic Test or Inspection → Marking → Warehousing
Cold Drawn Process for Seamless Steel Pipe
Round Pipe Billet → Heating → Punching → Pipe Head Treatment → Annealing → Acid Pickling → Coating Oil → Multi-pass Cold Drawing → Pipe Billet→ Heat Treatment → Straightening →Hydrostatic Test or Inspection → Marking → Warehousing
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| ① Starting material:Steel billets of various dimensions and grades. | ② Piercing:From the billet to the hollow. | |
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| ③ Elongating expanding:From the hollow to the shell. | ④ Finish rolling:From the shell to the tube. |
⑤ Finishing line:From the rolling mill to the dispatch area.
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