CARBON STEEL · CHANNEL SECTION Q235B Carbon Steel ChannelGB/T 706 Hot-Rolled U-Channel (UPE / UPN) A classic structural section with flat, parallel flanges — the economical choice for purlins, marcos, soportes, machinery and vehicle chassis. ESTÁNDAR: GB/T 706 CALIFICACIÓN: Q235B SIZE: 5# – 40# YIELD STRENGTH≥235 MPa TENSILE STRENGTH370–500 MPa SECTION HEIGHT50–400 mm 01 · PRODUCT OVERVIEW Q235B channels are hot-rolled to GB/T 706 with a U-shaped cross-section, parallel flanges and a straight web. They combine good bending strength in one plane with an easy flat surface for bolting and welding, making them a first choice for secondary structural members across construction and industry. WHY CHOOSE Q235B CHANNEL One material, un grado: solo Q235B. Hot-rolled from billet with stable…
Q235B channels are hot-rolled to GB/T 706 with a U-shaped cross-section, parallel flanges and a straight web. They combine good bending strength in one plane with an easy flat surface for bolting and welding, making them a first choice for secondary structural members across construction and industry.
WHY CHOOSE Q235B CHANNEL
un material, un grado: solo Q235B. Hot-rolled from billet with stable chemistry, consistent section geometry and guaranteed mechanicals; available in full range from 5# a 40#.
02 · CARACTERÍSTICAS CLAVE
One-Plane Bending Strength
High section modulus about the strong axis — ideal as purlins, beams and joists.
Easy Connection
Flat parallel flanges give clean bolting and welding surfaces for fast on-site assembly.
Full Weldability
Q235B welds cleanly in all positions — no pre-heat needed for ordinary shop welding.
Stable Mechanicals
Hot rolling delivers consistent yield and tensile values verified by mill certificate.
Cost Efficient
Efficient material layout and economical rolling cost — a low-cost structural workhorse.
Full Size Range
From 50×37×4.5 (5#) to 400×104×14.5 (40#), stocked in 6 metro, 9 m y 12 m longitudes.
03 · COMPOSICIÓN QUÍMICA (Análisis de reparto, %) —Q235B
Elemento
C
Y
Minnesota
PAG
S
Contenido máximo
0.20
0.35
1.40
0.045
0.045
Nota: Los valores son análisis de reparto máximo en porcentaje.. Los certificados de prueba de fábrica acompañan a cada lote..
04 · PROPIEDADES MECÁNICAS
Propiedad
Valor
Método de prueba
Fuerza de producción (reh)
≥ 235 MPa
GB/T 228.1
Resistencia a la tracción (habitación)
370 – 500 MPa
GB/T 228.1
Alargamiento (A)
≥ 26 %
GB/T 228.1
Impacto Charpy (20 °C)
≥ 27 j
GB/T 229
Dureza
≈ 121 HBW
GB/T 231.1
RESISTENCIA A LA TENSIÓN: COMPARACIÓN DE GRADOS COMUNES
Q235B Channel (370–500 MPa)RANGO
Q355B (470–630 MPa)MÁS ALTO
05 · PROPIEDADES FÍSICAS
DENSIDAD
7.85 gramos/cm³
PUNTO DE FUSIÓN
≈ 1510 °C
MÓDULO DE ELASTICIDAD
200 – 210 GPa
RELACIÓN DE POISSON
0.3
06 · ESPECIFICACIONES COMUNES (Selected Sizes)
Tamaño #
Dimensions h×b×d (milímetros)
Peso (kilogramos/m)
Longitud (metro)
5#
50×37×4.5
5.44
6 / 9 / 12
6.3#
63×40×4.8
6.63
6 / 9 / 12
8#
80×43×5.0
8.05
6 / 9 / 12
10#
100×48×5.3
10.01
6 / 9 / 12
12#
120×53×5.5
12.06
6 / 12
14#
140×60×6.0
14.53
6 / 12
16#
160×65×6.5
17.24
6 / 12
20#
200×73×7.0
22.64
6 / 12
Full range up to 40# (400×104×14.5, 67.6 kilogramos/m) disponible. Other sizes and lengths produced to order.
07 · APLICACIONES
Steel building purlins & roof members
Marcos, soportes & bases de maquinas
Bridge secondary members & gantries
Vehicle chassis & marcos de remolque
Torres de transmisión & apoya
Stairs, plataformas & pasarelas
08 · TRAMITACIÓN & EMBALAJE
Cortar a medida, perforación, galvanizing and painting available. Channels bundled and steel-banded, with end protection for export shipping.
ENTREGA
Sea or land freight, documentación de exportación completa (CI, PL, CO, MTC) y supervisión de carga proporcionada.
Need Q235B channel for your project?
Tell us the size #, Longitud y cantidad. Confirmaremos stock., precio y entrega dentro 24 horas.
PROGRESO
