🟦 Product Overview

JIS Channel Steel is produced according to JIS G3192, the Japanese standard for hot‑rolled steel sections. It includes C‑Channel and U‑Channel profiles widely used in Japan, Southeast Asia, and global EPC projects requiring Japanese‑standard structural steel.

JIS channels are known for:

• Excellent dimensional accuracy
• Reliable mechanical performance
• High weldability
• Consistent quality for structural and mechanical applications

Common material grades include SS400, SM490, and SM520, covering both general structural steel and high‑strength welded structural steel.

JIS Channel Steel is widely used in building structures, industrial frameworks, machinery support systems, and civil engineering applications.

🟦 Applicable Standards

• JIS G3192 – Dimensions, shape, mass, and permissible variations of hot‑rolled steel sections
• JIS G3101 – Rolled steels for general structure (SS400)
• JIS G3106 – Rolled steels for welded structures (SM490 / SM520)

🟦 Available Grades

• SS400
• SM490A / SM490B / SM490C
• SM520

These grades provide reliable performance for general and high‑strength structural applications.

🟦 Section Types

C‑Channel (Japanese Standard Channel)

• Traditional Japanese channel steel
• Balanced structural performance
• Suitable for building and industrial structures

U‑Channel (when applicable)

• Wider flange geometry
• Improved load distribution
• Used in machinery and equipment structures

🟦 Dimensions Range

Parameter	Range
Height (H)	50–300 mm
Flange Width (B)	37–90 mm
Web Thickness (t1)	4–13 mm
Flange Thickness (t2)	7–15 mm
Length	6 m / 9 m / 12 m / custom
Tolerance	As per JIS G3192

Designation	Unit Weight (kg/m)	G (mm)	t₁ (mm)	t₂ (mm)	r₁ (mm)	r₂ (mm)	Sectional Area (cm²)
75 × 40	6.92	75	5.0	7.0	8.0	4.0	8.818
100 × 50	9.36	100	5.0	7.5	8.0	4.0	11.92
125 × 65	13.4	125	6.0	8.0	8.0	4.0	17.11
150 × 75	18.6	150	6.5	10.0	10.0	5.0	23.71
150 × 75	24.0	150	9.0	12.5	15.0	7.5	30.59
180 × 75	21.4	180	7.0	10.5	11.0	5.5	27.20
200 × 80	24.6	200	7.5	11.0	12.0	7.0	31.33
200 × 90	30.3	200	8.0	13.5	14.0	6.0	38.65
250 × 90	34.6	250	9.0	13.0	14.0	7.0	44.07
250 × 90	40.2	250	11.0	14.5	17.0	8.5	51.17
300 × 90	38.1	300	9.0	13.0	14.0	7.0	48.75
300 × 90	43.8	300	10.0	15.5	19.0	9.5	55.75
300 × 90	48.6	300	12.0	16.0	19.0	9.5	61.90
380 × 100	54.5	380	10.5	16.0	18.0	9.0	69.39
380 × 100	62.0	380	13.0	16.5	18.0	9.0	78.96
380 × 100	67.3	380	13.0	20.0	24.0	12.0	85.71

🟦 Mechanical Properties

SS400

Property	Value
Yield Strength	245–275 MPa
Tensile Strength	400–510 MPa
Elongation	≥ 20%

SM490

Property	Value
Yield Strength	≥ 325 MPa
Tensile Strength	490–610 MPa
Elongation	≥ 18%

🟦 Chemical Composition (Typical)

SM490

Element	Max (%)
C	0.20
Mn	1.60
P	0.035
S	0.035
Si	0.55

🟦 Applications

• Building structures
• Industrial steel frameworks
• Machinery and equipment support
• Civil engineering projects
• Structural reinforcement
• Welded assemblies

🟦 Why Use JIS Channel Steel

• Standardized Japanese dimensions
• Excellent weldability and fabrication properties
• Reliable mechanical performance
• Suitable for Asian and global EPC projects
• Wide range of sizes and grades

🟦 Why Choose WelSteels

• Full range of JIS G3192 channel steel
• SS400 / SM490 / SM520 grades available
• CNC cutting, drilling, and fabrication services
• SGS / BV third‑party inspection available
• Export‑grade seaworthy packaging
• Fast delivery from stock and mill production