（一）踏步板：
(I) step board:
踏步板也称为楼梯踏步板、钢梯踏步板、梯踏板，是用于上平台的一种楼梯板，其安装方式有焊接联接和螺栓联接两种类型。
Treads, also known as stair treads, steel stair treads and stair treads, are a kind of stair plate used for landing. There are two types of installation: welding connection and bolt connection.
（二）踏步板两种安装方式介绍：
(II) introduction to two installation methods of step board:
A，焊接固定的踏步板，直接焊接到梯梁上的，不需要加踏步板的侧板，相对比较经济耐用但是不易拆解。
A. the fixed step plate welded directly to the ladder beam does not need the side plate with step plate, which is relatively economical and durable but not easy to disassemble.
B，螺栓固定的踏步板两边需要加厚的侧板，在侧板上打孔，安装是直接由螺栓固定，可重复回收再利用。
B. both sides of the bolted step plate need to be thickened with side plates. Holes are punched on the side plates. The installation is directly fixed by bolts and can be recycled.
客户可根据自己的实际需要选择。
Customers can choose according to their actual needs.
（三）型号：
(III) model:
按照样式可分为：
According to the style, it can be divided into:
焊接固定T1，T3，T2，T4
Welding fixation T1, T3, T2, T4
按照用料一般有两种:
There are generally two kinds of materials:
G255/30/100
G255/30/100
G325/30/100
G325/30/100
1. T1型踏步板
1. T1 type step board
该型号踏板使用普通扁钢制作，普通扁钢包边，不焊接花纹护板和防滑条，不加侧板，其结构简单。安装时焊接在钢梁上，简单、经济、实用，此种踏步板被很多工程采用比较广泛。此类型的踏步板比起其他型号成本要低20%左右。
The pedal of this model is made of ordinary flat steel, which is wrapped with ordinary flat steel. It does not weld pattern guard board and anti-skid strip, and does not add side plate. Its structure is simple. When installed, it is welded on the steel beam, simple, economical and practical. This kind of step board is widely used in many projects. The cost of this type of treads is about 20% lower than that of other models.
2. T2型踏步板
2. T2 stepping board
该型号采用普通扁钢焊接制作，踏板两端焊接安装侧板，侧板上打直径为14mm的圆孔和 长圆孔各一个。侧板打长圆孔的角部倒角，其目的是便于安装。制作完成后需要再钢梁上打孔用螺栓安装。此种被采用也较为广泛， 特点：可拆卸和重复利用。
The model is made of ordinary flat steel by welding. The two ends of the pedal are welded and installed with side plates. A round hole with a diameter of 14mm and a long round hole are punched on the side plates. The corner chamfering of the long round hole of the side plate is made for the convenience of installation. After the fabrication, the steel beam needs to be drilled and installed with bolts. It is also widely used, characterized by: detachable and reusable.
3. T3型踏步板
3. T3 stepping board
此种型号的踏步板在踏步板品种中被采用最为广泛。前端焊接花纹板护角，起到了 美观、防滑、耐磨损的作用。安装时采用焊接安装的方式，简单省时。此种踏板用 花纹板盖住了锐利的棱角，避免了滑到磕碰造成的严重伤害。
This type of stepping board is widely used in the stepping board varieties. The front end is welded with checkered plate corner guard, which plays the role of beauty, anti-skid and wear resistance. Welding installation is adopted during installation, which is simple and time-saving. This kind of pedal covers sharp edges and corners with pattern plate, avoiding serious injury caused by sliding to bump.
4. T4型踏步板
4. T4 type step board
T4踏步板集合了T2踏步板螺栓安装的优势和T3踏步板美观安全的优点。其既可 以用螺栓安装，便于拆装；又焊接了花纹板护角， 美观安全两不误。重复利用率高，集合了以上几种的优点，产品价格在这个系列里也是最高的。
T4 step board combines the advantages of T2 step board bolt installation and T3 step board beauty and safety. The utility model can be installed by bolts, which is convenient for disassembly and assembly, and the decorative pattern plate angle guard is welded, which is beautiful and safe. It has high reuse rate and combines the above advantages. The product price is also the highest in this series.
（四）尺寸：
(IV) size:
a）踏步板的常用尺寸为600mm,700mm，800mm，900mm，1200mm。一般尺寸小于900毫米以内需要G255/30/100,大于900毫米需要采用G325/30/100的型号，都是满足图集要求的。
A) the commonly used sizes of treads are 600mm, 700mm, 800mm, 900mm and 1200mm. Generally, g255 / 30 / 100 is required for sizes smaller than 900mm, and g325 / 30 / 100 is required for sizes larger than 900mm, all of which meet the requirements of atlas.
b）对于单人通过的楼梯,其两斜梁或护栏之间的宽度应不小于600mm.
B) for stairs passing by single person, the width between two inclined beams or guardrails shall not be less than 600mm
c) 当楼梯频繁地承受几个人同时交叉通过或用作人员的撤离路线时,梯宽应增加到1200mm.
C) when the stairs frequently bear several people crossing at the same time or are used as evacuation routes, the width of the stairs shall be increased to 1200mm
d)楼梯踏步板的突沿处应能承受1.5kN 的荷载，当宽度不大于1200mm,该荷载作用在100mmX100mm面积上; 当宽度大于1200mm,在每对称的600mm处加荷载1.5kN,楼梯踏板的挠度应不超过跨距的1/500。
D) the protruding edge of stair treads shall be able to bear a load of 1.5kn. When the width is not more than 1200mm, the load acts on the area of 100mmx100mm; when the width is more than 1200mm, add a load of 1.5kn at each symmetrical 600mm, and the deflection of stair treads shall not exceed 1 / 500 of the span.
（五）表面处理
(V) surface treatment
踏步板可采用热镀浸锌或涂防锈漆等表面处理后出厂。
Step board can be hot-dip galvanized or coated with antirust paint and other surface treatment before leaving the factory.