• Buy High Quality Chinese JIS GI Pipes, China High Quality Chinese JIS GI Pipes, High Quality Chinese JIS GI Pipes Producers
  • Buy High Quality Chinese JIS GI Pipes, China High Quality Chinese JIS GI Pipes, High Quality Chinese JIS GI Pipes Producers
  • Buy High Quality Chinese JIS GI Pipes, China High Quality Chinese JIS GI Pipes, High Quality Chinese JIS GI Pipes Producers

High Quality Chinese JIS GI Pipes

The GI pipes, also called pre galvanized steel pipes, are cold rolled round pipes made by galvanized steel strips. The GI pipes are widely used in scaffolding construction, greenhouse pipes, fence pipes, agricultural pipes and other areas.
There are two kinds of galvanization: hot dipped galvanization and pre galvanization. Pre galvanization is also declined to hot dipped galvanization, which the zinc coating formed by immersing steel pipes into the melting zinc. The difference between hot dipped galvanization and pre galvanization pipes is that pre galvanized pipes are made by galvanized steel coils directly. While hot dipped galvanized pipes are made by black steel coils into black pipes at first, then immerse the black pipes into zinc pond.
Tianjin Friend Steel Pipe CO.LTD has more than 15 years experience in steel pipe, we have always tried our best to provide high quality pipes for you.

1. Product Information

JIS GI Pipe

Standard: JIS 3444 

Size: 48.6*2.5mm*6000mm

Surface: Hot dipped Galvanized

Material: STK400, STK500

Tolerance: thickness: min 2.1mm; Length: -0/+20mm; OD:+/-0.5mm

STK500
C  SiMnPSTensile strengthYield StregnthElonggation
<= (%)<= (%)
<= (%)<= (%)MPAMPA%
0.240.350.3-1.30.040.04 50035515
STK400
C  SiMnPSTensile strengthYield StregnthElonggation
<= (%)<= (%)
<= (%)<= (%)MPAMPA>%
0.25//0.040.04 40023521

GI pipes

2. Production Process

JIS pipes

3. Packing and Loading

Pakage: 1. packed by steel strips in bundle, 61 pcs or 100 pcs per bundle

              2. Anti-water plastic wrap

              3. by wooden batten

              4. packed as per cuctomer request

GI pipes

4. Quality Control

JIS pipes

GI pipes

JIS pipes



Product Tag JIS pipes GI pipes
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