您知道方管的执行标准和用途范围是怎样的吗？下面济南方管生产厂家就根据有关标准为您讲解内容：

Do you know the executive standard and scope of use of square tube? The Jinan square tube manufacturer will explain the content to you according to relevant standards:

一、低压流体输送用镀锌焊接方管，标准号为GB/T3091-2008。代表材质Q235A,Q235BQ345B等。主要用于输送水、煤气、空气、油和取暖热水或蒸汽，用途限于一般较低压力流体。

1、 Galvanized welded square pipe for low pressure fluid transmission, standard number is GB/T3091-2008. Representative materials: Q235A, Q235BQ345B, etc. It is mainly used to transport water, gas, air, oil and heating hot water or steam, and is limited to general low pressure fluids.

二、低压流体输送用镀锌焊接方管，标准号为GB/T3092-2008。代表材质同上。主要用于输送水、煤气、空气、油和取暖热水或蒸汽等一般较低压力流体，方管外表采用热镀锌或是冷镀锌防腐工艺。

2、 Galvanized welded square pipe for low pressure fluid transmission, standard number is GB/T3092-2008. The representative material is the same as above. It is mainly used to transport water, gas, air, oil, heating hot water or steam and other generally low pressure fluids. The surface of the square pipe adopts hot galvanizing or cold galvanizing anti-corrosion process.

三、矿用流体输送焊接方管，标准号我GB/T14291-2000。代表材质Q235A、B级钢.主要用于矿山压风、排水、轴放瓦斯用直缝焊接方管。

3、 The standard number of welded square pipe for mining fluid transmission is GB/T14291-2000. The representative material is Q235A and B grade steel. It is mainly used for straight seam welded square pipes for mine air pressure, drainage and axial gas drainage.

四、低压流体输送用大直径电焊方管，标准号为GB/T14980-1994。代表材质Q235AB级。主要用于输送水、污水、煤气、空气、采暖蒸汽等低压流体。

4、 Large diameter electric welded square pipe for low pressure fluid transportation, standard number is GB/T14980-1994. The representative material is Q235AB. It is mainly used to transport low pressure fluids such as water, sewage, gas, air, heating steam, etc.

五、机械结构用不锈钢焊接方管，标准号为GB/T12770-1991。代表材质0Cr13、1Cr17、00Cr19Ni11、1Cr18Ni9、0Cr18Ni11Nb等。主要用于机械、汽车、自行车、家具、宾馆和饭店装饰及其他机械部件与结构件。

5、 Stainless steel welded square tube for mechanical structure, standard number is GB/T12770-1991. Representative materials are 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc. It is mainly used for machinery, automobiles, bicycles, furniture, hotel and restaurant decoration and other mechanical parts and structural parts.

六、流体输送用不锈钢焊接方管，标准号为GB/T12771-1991。代表材质为0Cr13、0Cr19Ni9、00Cr19Ni11、00Cr17、0Cr18Ni11Nb、0017Cr17Ni14Mo2等。主要用于输送低压腐蚀性介质。

6、 Stainless steel welded square pipe for fluid transportation, standard number is GB/T12771-1991. Representative materials are 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, 0017Cr17Ni14Mo2, etc. It is mainly used to transport low pressure corrosive media.

七、低压输送用螺旋方管（石油部标准）标准号为SY/T5037-2008。代表材质为Q235BQ345B等碳钢材质。主要用于低压输送水，石油，天然气，供暖等管道。

7、 The standard number of spiral square pipe for low-pressure transportation (standard of the Ministry of Petroleum) is SY/T5037-2008. The representative material is Q235BQ345B carbon steel. Mainly used for low pressure water, oil, natural gas, heating and other pipelines.

方管的执行标准和用途范围就讲解到这里了，您对此有什么疑惑可以随时来我们这边http://www.jnhxtcg.com咨询了解！

The implementation standards and scope of use of Fang Guan are explained here. If you have any doubts about this, you can come to us at any time http://www.jnhxtcg.com Ask about it!