In brief, pipe, welding material (baking, heat preservation), welding joint treatment (cleaning, type of break), welding precautions (current, voltage, influence of gas welding wind, rain and snow weather)
At present, the commonly used methods of pipe welding include electrode arc welding (SMAW), submerged arc welding (SAW), tungsten gas shielded arc welding (GTAW), GMAW, FCAW and down-welding.
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On March 16, reporters learned from Chongqing water company, the company plans to implement this year in the main city of 90,000 residential water "one household one table" transformation. After the completion of the transformation, the main target of "one household, one table" transformation of the city will be nearly completed, and the remaining finishing transformation projects will be completed in 2017.
In order to solve the energy supply imbalance in park enterprises, reduce production costs, at the same time in order to cooperate with atmospheric pollution prevention and control work, resolutely defend "LinShu blue", overall planning, decisive ShiCe LinShu economic development zone, adhere to the "high starting point positioning, high standard planning, building high quality", to promote the steam pipe network construction within their respective jurisdictions.
Signal pole manufacturer's signal lamp flange plate galvanized 550g/m2, bolt and other anchor parts galvanized 350g/m2.Traffic signal pole manufacturer should carry out in strict accordance with the standard requirements during construction. The mark foundation adopts C20 class reinforced concrete foundation, whose top elevation is consistent with the road surface. The edge of the signal lamp shall be no less than 5500mm away from the ground. The foundation adopts reinforced concrete foundation. The construction of intersection pipelines must comply with the construction code for building engineering and the construction code for municipal engineering.· PCV pipe and pipe diameter shall be used for laying pipelines;
The connection operation of groove pipe fitting is very simple, no special professional skills, ordinary workers through a brief training can operate. This is because products have incorporated a large number of sophisticated skills into the production of the product in a factory way. It only takes a few minutes for the connection of a pipe fitting, which maximizes the technical difficulty of on-site operation, saves working hours, and then ensures the quality of the project and improves the working efficiency. This is also the overall direction of device skills development.
Dahuofang water transmission project south tower water distribution plant water transmission line transformation project has broken ground on March 1, the entire transformation pipeline length of 6.5 kilometers, is expected to be completed in mid-April. The project will provide a comprehensive guarantee for the water supply safety of Shenhe area and Hunnan area.
A few days ago, the author learned from the relevant departments, Debao county natural gas pipeline laying is comprehensive and orderly progress, July is expected to use pipeline natural gas.
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