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, kehyksiä, suluissa, machinery and vehicle chassis. STANDARDI: GB/T 706 LUOKKA: 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, yksi luokka – vain Q235B. Hot-rolled from billet with stable…
A classic structural section with flat, parallel flanges — the economical choice for purlins, kehyksiä, suluissa, machinery and vehicle chassis.
STANDARDI: GB/T 706LUOKKA: Q235BSIZE: 5# – 40#
TUOTTOVOIMA
≥235 MPa
VETOLUJUUS
370-500 MPa
SECTION HEIGHT
50–400 mm
01 · TUOTTEEN YLEISKATSAUS
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
Yksi materiaali, yksi luokka – vain Q235B. Hot-rolled from billet with stable chemistry, consistent section geometry and guaranteed mechanicals; available in full range from 5# to 40#.
02 · KESKEISET OMINAISUUDET
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 m, 9 m ja 12 m pituudet.
03 · KEMIALLINEN KOOSTUMUS (Cast-analyysi, %) - Q235B
Elementti
C
Ja
Mn
P
S
Suurin sisältö
0.20
0.35
1.40
0.045
0.045
Huom: Arvot ovat enimmäismäärän analyysi prosentteina. Jokaisen erän mukana on myllytestitodistukset.
04 · MEKAANISET OMINAISUUDET
Omaisuus
Arvo
Testimenetelmä
Tuottovoima (ReH)
≥ 235 MPa
GB/T 228.1
Vetolujuus (Rm)
370 – 500 MPa
GB/T 228.1
Pidentymä (A)
≥ 26 %
GB/T 228.1
Charpy vaikutus (20 °C)
≥ 27 J
GB/T 229
Kovuus
≈ 121 HBW
GB/T 231.1
VETOLUJUUS – YLEISET LUOKIEN VERTAILU
Q235B Channel (370-500 MPa)ALUE
Q355B (470-630 MPa)KORKEAMALLA
05 · FYSIKAALISET OMINAISUUDET
TIHEYS
7.85 g/cm³
SULAMISPISTE
≈ 1510 °C
JOUSTUSMODULUS
200 – 210 GPa
POISSONIN SUHDE
0.3
06 · YLEISET TEKNISET TIEDOT (Selected Sizes)
Koko #
Dimensions h×b×d (mm)
Paino (kg/m)
Pituus (m)
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 kg/m) saatavilla. Other sizes and lengths produced to order.
07 · SOVELLUKSET
Steel building purlins & roof members
Kehykset, suluissa & koneen alustat
Bridge secondary members & gantries
Vehicle chassis & perävaunun kehyksiä
Lähetystornit & tukee
Stairs, alustat & kulkutiet
08 · KÄSITTELY & PAKKAUS
Leikkaus pituuteen, poraus, galvanizing and painting available. Channels bundled and steel-banded, with end protection for export shipping.
TOIMITUS
Sea or land freight, täydelliset vientiasiakirjat (CI, PL, CO, MTC) ja lastausvalvonta tarjotaan.
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