Name: High-strength structural steel beams, H-shaped steel sections
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High-strength structural steel beams, H-shaped steel sections

High Load-Bearing Capacity: Optimized flange and web design for maximum strength
Material Efficiency: Reduced steel consumption through intelligent section design
Excellent Weldability: Compatible with all standard welding methods
Corrosion Resistance: Optional protective coatings available
Dimensional Precision: Consistent profiles ensure easy installation

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◉ PRODUCT SPECIFICATION

Standard Specifications

Parameter	H-Beams	I-Beams
Standards	ASTM A6, A992, EN 10034, JIS G3192	ASTM A36, A992, BS 4-1
Web Height	100-1200 mm	75-1100 mm
Flange Width	50-450 mm	50-400 mm
Web Thickness	4.5-45 mm	3.8-40 mm
Flange Thickness	6-70 mm	5.2-55 mm
Length	6-18 meters (custom up to 24m)	6-18 meters (custom up to 24m)

Material Grades

ASTM A36: General structural purposes
ASTM A572 Gr. 50: High-strength low-alloy
ASTM A992: Preferred for building construction
EN 10025 S355JR: European standard structural steel

Mechanical Properties

Grade	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)
A36	≥250	400-550	≥20
A572 Gr.50	≥345	450-550	≥18
A992	345-450	450-550	≥18
S355JR	≥355	470-630	≥20

Section Tolerances

Depth: ±3 mm (≤400 mm), ±4 mm (>400 mm)
Flange Width: ±3 mm (≤150 mm), ±4 mm (>150 mm)
Web Thickness: ±0.5-1.0 mm (depending on thickness)
Length: +75 mm, -0 mm (standard), ±2 mm (precision)
Straightness: ≤1/1000 of length

Available Sections

H-Sections (Wide Flange)

Standard Series:

W Series (Wide Flange): W100-W1200
HP Series (Bearing Pile): HP100-HP500

Common Sizes:

W200×200, W250×250, W310×310
W360×360, W400×400, W500×500

I-Sections

Standard Series:

S Series (American Standard): S75-S600
UB/UC (Universal Beams/Columns): UK standards

Surface Treatment Options

Mill Finish: Natural hot-rolled surface
Shot Blasted: Clean surface for painting
Primed: Shop primer for corrosion protection
Galvanized: Hot-dip galvanizing available
Fire-Resistant Coatings: Intumescent coatings for fire protection

◉ Surfcae selection

SURFACE	CHARACTERISTIC	SUMMARY OF MANUFACTURING METHOD	APPLICATION
NO.1	Silvery white	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.1	lackluster	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.2D	Silvery white	After cold rolling, heat treatment and pickling are carried out	General material, deep material
NO.2B	Gloss is stronger than No.2D	After No.2D treatment, the final light cold rolling is carried out through the polishing roller	The general material
BA	As bright as a sixpence	No standard, but usually a bright annealed surface with high reflectivity.	Building materials, kitchen utensils
NO.3	Rough lapping	Grind with 100~200# (unit) strop tape	Building materials, kitchen utensils
NO.4	Intermediate grinding	Polished surface obtained by grinding with 150~180# strop abrasive tape	Building materials, kitchen utensils
NO.240	Fine lapping	Grinding with 240# strop abrasive tape	kitchenware
NO.320	Very fine grinding	Grinding was carried out with 320# strop abrasive tape	kitchenware
NO.400	The luster is close to BA	Use 400# polishing wheel to grind	General timber, building timber, kitchen appliances
HL	Hairline grinding	Suitable particle material for hair stripe grinding (150~240#) with many grains	Building, construction material
NO.7	It's close to mirror grinding	Use a 600# rotary polishing wheel to grind	For art or decoration
NO.8	Mirror ultrafinish	The mirror is ground with a polishing wheel	Reflector, for decoration