- GI Pipes
- Raw Material In Test
- Load Test
- Mock Up
Raw Material In Test
Load Test
Mock Up
Welmade’s GI Pipes
Wellmade is GI Pipes manufacturer& Supplier In China. You can find all sizes and specifications of the GI Pipes in our factory. Include all types of rectangular hollow section(RHS), square hollow section (SHS) tubes, round steel tubing, oval GI pipes, and special-shaped galvanized tubes and sections.
We custom your GI pipes dimensions too. The longest GI pipes come out from our GI pipes’ production line can reach 12 meters long. While 6m long GI pipes are the most used in the construction scaffolding industry. Wellmade offers a cut service to make your GI pipes into your required lengths.

GI Pipes VS MS Pipes
JIS standard GI Pipes
Wellmade’s GI Pipe Classes
In Wellmade, you can find the different classes for the round-shaped GI pipes. It includes class A, Class B, and Class C.
Class A GI Pipes
GI Pipe in Class A is a type of light gauge steel pipe. It is with thinner wall thickness. The lightweight GI pipes are always marks in yellow color.
Class B GI Pipes
Class B GI pipes are a type of medium gauge steel pipes. It is with a middle thick pipe walls. The medium gauge steel pipes are marked in blue color.
Class C GI Pipes
If you want heavy-duty GI Pipes. You need to buy the Class C steel pipes. Class C is always marked in red. It is a heavy gauge with the thickest tube walls.
According to ASTM standard, the GI pipes are measure according to schedule. Thus, there are sch 20, sch 40 and sch 80 GI Pipes. This measurement is also used in other countries like the Philippines country.
JIS GI Scaffolding Pipe Fittings
In JIS standard scaffolding construction, the GI pipes are always erected by the JIS scaffold fittings. According to the Japanese and Korean standards, there are many types of scaffolding pipe fittings using in connecting different components and parts. Include scaffold fixed clamps, swivel clamps, right angle beam c clamps, swivel beam c clamps, bone joints, sleeve couplers, base plate, etc. All of them are pressed from high-strength steel plates or drop forged from steel round bar structures. The scaffolding clamps are able to match well with the O.D 48.6mm GI pipes.
Wellmade’s JIS GI Pipe in Constuction
For scaffolding construction, Wellmade’s GI pipes are used to form staging access scaffold tower, suspended scaffolding, formwork shoring support system, etc.
More than scaffolding pipes and clamps, scaffolding metal decks are used to form walking boards or work platforms in construction. The metal scaffold panels are galvanized too. It is fixed by limpet clamps or other board retaining couplers to the scaffolding tubular frames. Board clamps make the pipe staging access system more stable and safe.
STK500 GI Pipe JIS Standard Size & Specification
Code | Items | Size (mm) | Length | Surface |
WSTK50 | GI Scaffolding Pipe | O.D 48.6 | 0.3-6.4m | H.D.G |
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