煤矿井下用螺旋焊接波纹镀锌钢管-j9游会真人游戏第一品牌
煤矿井下用螺旋焊接波纹镀锌钢管
spiral welded corrugated galvanized steel pipes in coal mining
压力等级：抽放瓦斯气体管材，最高公称压力-0.097mpa。
pressure
grade: the maximum nominal pressure of the methane gas drainage pipes is -0.097mpa.
规格型号：dn200mm～dn800mm。
specification and model: dn200mm～dn800mm
执行标准： gb/t13912-2002《金属覆盖层钢铁制件热浸镀锌层 技术要求及试验方法》。
executive standard: gb/t13912-2002 metallic coatings — hot dip galvanized coatings for steel parts — technical requirements and test methods.
性能特点：
performance features:
1.重量轻：相对于同等规格型号的其他管材，此种管材大大减少了管材重量，使得劳动强度低，施工效率较快；
1. light weight: compared with other pipes with the same specification and model, this kind of pipes greatly reduces the weight of the pipe, which makes the labor intensity low and the construction efficiency relatively fast;
2.耐腐蚀：螺旋焊接波纹镀锌钢管是通过热镀锌工艺在螺旋焊接波纹钢管表面镀上一层镀锌层，锌层厚度高于国家标准对锌层厚度所做的要求，管道的防腐寿命优于一般涂层防腐材料；
2. corrosion resistance: spiral welded corrugated galvanized steel pipe is coated with a galvanized layer on the surface of spiral welded corrugated steel pipe by hot-dip galvanizing process. the thickness of zinc layer is higher than the requirements in national standards for the thickness of zinc layer. the corrosion resistance lifetime of the pipeline is better than that of the general coating anti-corrosive material;
3.环刚度高：抽放瓦斯管材主要要求负压性能，此产品经过实验数据得出结论环刚度均满足sn16；
3. high ring stiffness: the main requirement of the methane gas drainage pipes is the negative pressure performance. the experimental data shows that the ring stiffness meets sn16;
4.锌层均匀：热浸镀锌的管材，锌层厚度均匀，包覆完整；
4. uniform zinc layer: hot dip galvanized pipes have the uniform thickness of the zinc layer and the complete coating;
5.附着力强：镀锌钢带管采用热浸镀锌工艺处理，通过锤击法及锉刀法，锌层无起皮、剥落现象。
5. strong adhesion: the galvanized steel strip pipes are treated by hot dip galvanizing process. through the hammering method and the file method, the zinc layer has no peeling.
规格尺寸：煤矿井下用螺旋焊接波纹镀锌钢管规格尺寸符合下表要求：
specification
and dimension: specification and dimension of spiral welded
corrugated galvanized steel pipes in coal mining meet the requirements in table
below:
管材规格尺寸
pipe
specification and dimension
|
公称内径(dn/mm) |
最小内径(mm) |
螺距*波峰(mm) |
最小钢带厚度(mm) |
镀锌层双面总重量(g/m2) |
镀锌层双面最小重量(g/m2) |
|
200 |
200±5 |
42*7 |
1.2 |
≥600 |
≥550 |
|
250 |
250±5 |
42*7 |
1.2 |
||
|
300 |
300±5 |
42*7 |
1.2 |
||
|
350 |
350±5 |
42*7 |
1.2 |
||
|
400 |
400±5 |
39*10 |
1.4 |
||
|
450 |
450±5 |
39*10 |
1.4 |
||
|
500 |
500±5 |
39*10 |
1.4 |
||
|
600 |
600±5 |
40*16 |
1.6 |
||
|
700 |
700±5 |
40*16 |
1.6 |
||
|
800 |
800±5 |
40*16 |
1.6 |
