Construction

The importance of erw pipe operation

By |2018-09-30T07:22:26+00:00December 7th, 2015|Construction, News|

Welding pressure is one of the main parameters of the welding process. After the two edges of the tube are heated to the welding temperature, common metal grains are formed under the action of the pressing force to form the welding with each other. Due to the possible tolerances of the erw tube

Pipeline welding operation requirements

By |2018-09-27T22:01:18+00:00December 7th, 2015|Construction, Engineering|

All instructions, instruments for measuring, testing is used, instruments, test tools must be qualified and accredited through the period used in the period, such as ammeter, temperature and humidity, wind speed meter, voltmeter, weld inspection and feet, infrared thermometer, etc. and so on. Procurement of steel pipe, flanges, welding, pipe fittings, valves and other