CARBON STEEL · CHECKER PLATE

Q235B钢楼板
国标/T 33974 Diamond Checker / Tread Plate

Raised diamond pattern for maximum anti-slip grip — the standard choice for stair treads, 平台, walkways and vehicle flooring.

STANDARD: 国标/T 33974 PATTERN: DIAMOND THICKNESS 3–8 mm

YIELD STRENGTH

≥235兆帕

TENSILE STRENGTH

370–500兆帕

PATTERN HEIGHT

1.0–2.5 mm

01 · 产品概述

Q235B checker plates carry a raised diamond pattern rolled directly into a hot-rolled carbon steel base. The pattern provides dependable anti-slip friction even when wet, oily or dusty, while the Q235B base keeps full structural strength for load-bearing floors and steps.

WHY CHOOSE Q235B CHECKER

One material, one grade — Q235B only. Uniform diamond pattern, consistent base thickness, weldable and cuttable, with mill certificates on every batch.

02 · 主要特点

Anti-Slip Grip

Raised diamond points grip footwear and tyres in wet, oily and dusty conditions.

Full Structural Strength

Q235B base keeps full yield and tensile strength for load-bearing floors and stairs.

Easy Fabrication

Cuts cleanly with plasma, laser or shear; welds and bends without special treatment.

使用寿命长

Hot-rolled surface and optional painting or galvanizing extend life in outdoor and industrial use.

Standard Stock Sizes

3/4/5/6/8 mm base in 1000/1250/1500 mm widths, 6000 mm lengths ready to cut.

Custom Cutting

Treads, gussets and panels cut to drawing — ready for installation on arrival.

03 · 化学成分 (Cast Analysis, %) — Q235B

元素	C	和	锰	磷	S
Max Content	0.20	0.35	1.40	0.045	0.045

笔记: Values are maximum cast analysis in percent. Mill test certificates accompany each batch.

04 · 机械性能 (Base Plate)

财产	价值	Test Method
屈服强度 (ReH)	≥ 235 兆帕	国标/T 228.1
抗拉强度 (Rm)	370 – 500 兆帕	国标/T 228.1
伸长 (A)	≥ 26 %	国标/T 228.1
Charpy Impact (20 ℃)	≥ 27 J	国标/T 229
Pattern Height	1.0 – 2.5 毫米 (diamond)	国标/T 33974

TENSILE STRENGTH — COMMON GRADES COMPARISON

Q235B Checker (370–500兆帕)RANGE

Q355B (470–630 MPa)HIGHER

05 · 物理性能

DENSITY

7.85 g/cm³

MELTING POINT

≈ 1510 ℃

MODULUS OF ELASTICITY

200 – 210 GPa

POISSON’S RATIO

0.3

06 · 通用规格

Base Thickness (毫米)	Pattern Height (毫米)	宽度 (毫米)	长度 (毫米)
3.0	1.0	1000 / 1250 / 1500	2000 / 3000 / 6000
4.0	1.0	1000 / 1250 / 1500	2000 / 3000 / 6000
5.0	1.5	1000 / 1250 / 1500	2000 / 3000 / 6000
6.0	1.5	1250 / 1500	6000
8.0	2.0	1500 / 1800	6000
表面	Hot-rolled mill finish; painted, oiled or galvanized on request

Custom size, hole punching and cut-to-shape service available — send your drawing for a quote.

07 · 应用领域

Stair treads & step plates
工厂车间 & machine platforms
Walkways, 舷梯 & 坡道
卡车床 & trailer flooring
船舶甲板 & 海上平台
Anti-slip covers & gantry walk plates

08 · 加工 & 包装

Laser / plasma cutting, shearing, 冲孔, bending and painting available. Plates packed on pallets with protective film or paper interlayers, steel-banded for export.

DELIVERY

Sea, rail or truck freight worldwide, full export documentation (CI, PL, CO, MTC) and loading supervision provided.

Need checker plate cut to your tread size?

Send thickness, 宽度, length and pattern — we will confirm stock and price within 24 hours.

REQUEST A QUOTE