Pre Painting Galvanized Steel Pipe

Pre painting galvanized steel pipe is difference from hot dipped galvanized pipe on production process. Pre galvanized pipe is made by narrow steel strip coated (this coating layer is also HDG) before fabrication. And this coating is generally thinner than hot dipped galvanized. Also the steel strip is thin (1.0 mm~2.0 mm). The cost of pre galvanized pipe is lower than HDG pipe, and the pre galvanized pipe is also can be used for fluid (water) transport, conduit pipe, scaffolding pipe and decorative pipe etc.

pre painting galvanized steel pipe

Ruijie Steel stocks Painting Galvanized Steel Pipe and Manufacture in:

Circular Hollow Section

  • ERW (electric resistance welded) method
  • 1/4 inch mm to 8 inch diameter
  • Standard 6.0 (5.8) meters length
  • Wall thickness 1.0 to 2.0 mm
  • Q235, Q235B
  • End Finishing: Plain Ends
  • BS1387, BS1139, ASTM A53, GB/T3091, etc

Square Hollow Section

  • ERW (electric resistance welded) method
  • 20*20 mm to 200*200 mm diameter
  • Standard 6.0 (5.8) meters length
  • Wall thickness 1.0 mm to 2.0 mm
  • Q235, Q235B
  • End Finishing: Plain Ends
  • EN-10219, JIS-G3466, GB6728-2002, etc

Rectangular Hollow Section

  • ERW (electric resistance welded) method
  • 20*10 mm to 200*300 mm diameter
  • Standard 6.0 (5.8) meters length
  • Wall thickness 1.0 mm to 2.0 mm
  • Q235, Q235B
  • End Finishing: Plain Ends
  • EN-10219, JIS-G3466, GB6728-2002, etc

Circluar Hollow Section

RAW Materials

Galvanized Steel Strip

We use this steel strip that has been coated with Zinc, and the coating layer is thinner than HDG pipe.

Edge Milling

Edge Milling

The first part of forming machine- uncoiling & vertical squeeze rolls

Forming machine

Forming of Pipe

And this is the second part of the forming machine-horizontal squeeze rolls

Welding

ERW generator

This is the most important process-Electric Resistance Welding, ensuring the seam complete.

Cut Off

Colling & Cutting

The final several steps-water cooling, sizing, flying cutting.

In Stock

Pipe in Stock

Please note: we only have the pipe with normal spec in stock, not all of the dimension. Contact us for more.

SHS & RHS

Round to Square

SHS & RHS Process

SHS & RHS are made by round pipes through the molding machine- making round hollow section into square or rectangular hollow section. And the rest processes are same with round pipes’.

Bundled

Bundled with narrow steel strip

Also, we always have a certain number of square and rectangular tube in our warehouse, but not for all, you need to contact us for more details if you are urgent.
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Detailed Pre-Galvanized Pipe Specifications

Download our pre galvanized steel Pipe specification for reference if necessary.
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