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Location: HOME > PRODUCTS > Section Steel / Profile Steel > JIS G3101/JIS G3106 Steel Angle

JIS G3101/JIS G3106 Steel Angle

Japanese standard hot-rolled angle steel dimensions conform to JIS G3192, covering the external dimensions, weight, and tolerances of equal and unequal angle steel, ensuring high precision and regular cross-sections. The core materials follow JIS G3101 and JIS G3106, with mainstream grades being SS400, SM490A/B, and SM490YB. Suitable for general load-bearing, high-strength structures, and low-temperature seismic applications, it meets stringent quality requirements.

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Material	S235JR,S275JR,S355JR、S355NL,S355JR A36,A572 Gr50 SS400,SM490 Q235B,Q355B,Q355C,Q355D
Regular inventory size	Equilateral angle steel	25×25、30×30、40×40、50×50、60×60、70×70、75×75、80×80、90×90、100×100、120×120、150×150
	Unequal-sided angle steel	32×20、40×25、50×32、63×40、75×50、80×50、100×63、125×80、150×90
Edge Thicknes	3mm、4mm、5mm、6mm、8mm、10mm、12mm
Fixed length	6m / 12m (most common), custom cut to length 3–15m available
Surface treatment	Hot Rolled Black ,Hot Dipped Galvanized,Shot Blasted / Painted
Delivery condition	Hot rolling forming, centerless straightening, precision end face cutting
Certificate	ISO, SGS, BV
Supply Capacity	1230 tons/Day
Business Type	Manufacturer
Packaging	Binding + Rust-proof film + IPPC fumigation wooden base, suitable for shipping containers

Based on the popular brands and sizes, we can help you quickly select the appropriate products:

Enforce Standards	Brand	Core applications
EN	S235JR、S355JR	Steel structure factories, supports, bridge load-bearing
ASTM	A36、A572 Gr50	North American building frames, engineering structures
JIS	SS400、SM490	Southeast Asian infrastructure, mechanical parts
GB	Q235B、Q355B/Q355C	Custom cutting, galvanization processing and deepening

B/(mm)	t/(mm)	Common applications
25×25	3、4	Small supports, hardware accessories
30×30	3、4、5	Lightweight structures, small components of curtain walls
40×40	4、5、6	Global standard mass-produced items
50×50	4、5、6、8	Main products for engineering, regular stock
60×60 / 63×63	5、6、8	Load-bearing frames, steel structures
70×70、75×75	6、8、10	Heavy-duty supports, equipment bases
80×80、100×100	8、10、12	Large-scale infrastructure, bridge auxiliary materials

Material Selection

SS400 (JIS G3101): A general-purpose basic material, easy to weld, and cost-effective; used in light-load structures, supports, and general secondary components; a mainstay in export sales.

SM490A/B (JIS G3106): High strength, good toughness, and excellent seismic resistance; used in factory load-bearing frames, main mechanical components, and bridge engineering.

SM490YB: Controlled rolling process, excellent low-temperature impact performance; used in high-altitude and cold regions, and high-end precision steel structures.

Our factory's core export advantage in JIS standard angle steel:

Full range of specifications in stock, one-stop purchasing: We maintain a full inventory of mainstream JIS standard equal/unequal angle steel, which can be combined with JIS H-beams, I-beams, channel steel, and steel plates for joint shipment, reducing customers' overall procurement, communication, and logistics costs.

Strictly adhering to JIS G3101 / JIS G3106 standards, the SS400 and SM490 series meet composition and mechanical property requirements; official JIS material certificates are provided, and international third-party testing is supported. High-precision customized rolling ensures quality meets Japanese standards. Dedicated JIS-standard shaped rolls are used for production, ensuring dimensions, angles, straightness, and surface precision meet JIS tolerance requirements; the surface is free of cracks, folds, and oxidation defects, and is highly adaptable to welding, galvanizing, and deep processing.

Large-scale hot-rolling production lines allow for fast delivery of in-stock items and efficient scheduling of customized and deep-processing orders; professional container loading optimizes loading rates and saves on sea freight costs.

No middlemen's markup, factory base price supply;

Comprehensive customization service: arbitrary measurement, cutting, drilling, beveling, sandblasting, anti-corrosion painting, hot-dip galvanizing integrated processing

Support for third-party re-inspection, in line with the engineering acceptance standards of various countries

Payment Methods

Flexible payment terms available: T/T and L/C. For new clients, 30% advance payment for production, balance against copy of B/L. L/C is acceptable for large & regular orders to secure both parties.

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Warehousing Management

Before each batch of steel leaves the factory, a complete process inspection is strictly carried out. From chemical composition, mechanical properties to dimensional tolerance and surface quality, each item is carefully checked to ensure compliance with national standards and export regulations. At the same time, the quantity, packaging and rust prevention treatment are also verified. An original factory warranty certificate is attached, guaranteeing the quality. Before shipment, inspection photos are provided. Any non-compliant items will not be released, and the quality is fully controllable throughout the process. This ensures your overseas purchasing is safe and worry-free.

All items are visually inspected before delivery. No cracks, deformation, rust, scratches or cutting marks are allowed; edges must be smooth. Only visually sound products will be shipped.

Thickness, width, length, wall thickness, outer diameter have been measured. Straightness, curvature, torsion, diagonal tolerance all meet the corresponding tolerance requirements.

Quality inspection includes: mechanical property tests (yield strength, tensile strength), elongation rate, impact energy, hardness testing, chemical composition testing, process performance testing, etc.

Inspection according to packaging requirements: secure binding, moisture-proof film, rust-proof paper, export fumigation/fumigation-free wooden crates, shipping marks, gross weight, net weight, etc.

We will provide full reception services to support the customers' on-site inspection of the goods.

Hot Rolling Production Line

Cold rolling precision processing

Cold drawing/cold rolling line

Hot Rolling Production Line

Hot rolling production line (producing hot-rolled coils/medium-thick plates, thickness 2–60mm)

Cold rolling precision processing

(Producing ultra-thin / high-precision / shiny panels, with thickness ranging from 0.1 to 3mm, for high-end products)
Cold drawing/cold rolling line

(High-precision cold-drawn round steel, square steel, hexagonal steel, and special-shaped bars)

Cold drawing/cold rolling line

(High-precision cold-drawn round steel, square steel, hexagonal steel, and special-shaped bars)

Warehousing Management

A ten-thousand-ton standardized warehouse with grid-based zoning and system positioning enables rapid material retrieval and reduces the time spent searching for materials.

Inbound inspection: Verify the physical items against the inbound form, inspect the appearance, dimensions, and labels. Once confirmed to be correct, the materials are entered into the ERP system and processed for storage.

Logistics and Global Delivery: Self-operated fleet + contracted logistics partners; expedited service available for urgent orders.

International Shipping: Supports FOB, CIF, DDP, and other trade terms, covering 100+ countries and regions.

Process: Booking → Trucking → Customs Declaration → Loading onto Ship/Aircraft → Bill of Lading Issuance → Document Delivery → Destination Port Customs Clearance (Optional) → Last-Mile Delivery.

Provides door-to-door one-stop logistics with full tracking to ensure safe and timely arrival of goods.

After-Sales Service and Traceability: Delivery receipts, logistics information, and quality inspection documents are sent to customers within 24 hours of shipment.

Established a full product lifecycle traceability system, allowing tracking of production, quality inspection, warehousing, and transportation records.

Follow-up inspection within 72 hours of arrival; rapid response and handling of quality issues; assistance in resolving customs clearance issues for foreign trade orders.

Packaging Method