电气工程施工质量控制要点.doc

电气工程施工质量控制要点
一、 概述

二、 配管
１、 钢管必须用专用弯管器弯制，弯曲处不应有折皱、凹陷和裂缝且弯扁程度不应大于管外径
的１０％，管口应平整、光滑。弯曲半径不应小于管外径的６倍，当埋设于地下或混凝土内时，不应小于管外径的１０倍。
２、 钢管管径在Ф５０及以下的，必须采用螺纹连接，不得采用套管连接。钢管管径在Ф６３
及以上的，可以使用套管焊接，套管应处在两管对口的中心，长度为管外径的１•５～３倍，焊接应严密。
３、 镀锌钢管应采用螺纹连接或紧定螺钉式套管连接，不得采用熔焊连接。其跨接接地应采用
专用接地线卡子连接接地线，不得采用熔焊连
Construction Quality Control of Electrical Engineering
I. Introduction

Second, piping
1, tube bending device must be dedicated bending, the bend should not have wrinkles, dents and cracks and the degree of bending flat tube outer diameter not greater than
10% of the nozzle should be flat and smooth. Bending radius of not less than 6 times the external diameter of pipe, when laid on the ground or in concrete should not be less than 10 times the pipe diameter.
2, tube diameter in the Ф50 and below, must be threaded connections, pipe connections shall not be used. Pipe diameter in Ф63
And above, you can use the pipe welding, pipe should be in two counterparts, the center of the length of pipe outside diameter of 1 • 5 ~ 3 times, welding should be tight.
3, galvanized steel pipe should be threaded or screw-type pipe connection adapter may not be connected by welding. The inter-and ground should be
Dedicated ground wire clamp to connect ground wire, not connected by welding
 

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