I beam

I beam from Junnan Steel

Structural I beam sections with tapered flanges. ASTM A36/A572, GB/T 706, EN 10025. For beams, rafters, and machine frames.

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I beam

I beam Product Range at a Glance

Browse the full product list below or send an inquiry.

I beam
Standard

Standard I beam

ASTM A36/A572 Gr.50. 80x42 to 600x190 mm.

I beam
Custom

Custom I beam

Special lengths and non-standard sizes for volume orders.

I beam
Certified

Certified I beam

Full MTC. SGS/BV/CIQ inspection options.

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I beam Specs

I beam Specifications

Every I beam batch is manufactured under strict quality control. QC covers dimensional checks, tensile testing, bending tests, and surface inspection.

  • Standards: ASTM A36, A572 Gr.50, EN 10025 S235JR/S355JR, JIS SS400, GB/T 706 Q235/Q355
  • Grades: A36 (250 MPa), A572 Gr.50 (345 MPa), S235JR, SS400, Q235B
  • Size Range: 80x42 to 600x190 mm. Tapered flanges.
  • Length: 6-20 m. Standard and custom.
  • Surface: Black as-rolled or primer coated.
  • Certificate: MTC per batch. Third-party inspection accepted.

I beam Applications Across Industries

Our i beam products serve critical roles worldwide.

Building Rafters

Building Rafters

Roof and floor support beams for steel building structures.

Mezzanine Floors

Mezzanine Floors

Intermediate floor beams in warehouses and factories.

Crane Runway Beams

Crane Runway Beams

Support rails for overhead crane systems.

Machine Frames

Machine Frames

Base frames for heavy equipment and machinery.

Why Choose Junnan Steel for I beam Supply

10+ Years Export Expertise

Founded in 2015, exported i beam to 118+ countries.

Factory-Direct Pricing

Mill-level pricing, no middlemen.

Third-Party Inspection

SGS, BV, CIQ. MTC per batch.

Flexible Shipping

15-25 days. FOB, CIF, CFR, EXW.

Global Support

Multi-language. 24h response.

FAQ About I beam

What grades?

ASTM A36, A572 Gr.50, EN S235JR/S355JR, JIS SS400, GB Q235/Q355.

I beam vs H beam?

I beam has tapered flanges for beam use. H beam has parallel flanges for column use.

What sizes?

80x42 to 600x190 mm. 6-20 m. Custom available.

MTC available?

Yes. Full chemical and mechanical data. Third-party inspection available.

Lead time?

15-25 days from deposit.

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