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API 5L
Generally speaking, API 5L refers to API 5L line pipe,which is out of the ground the oil, gas, water, transported by pipeline to pipe oil and gas industry companies. according to the manufacture process and the tube bloom used different shapes, api 5l can be divided into api 5l seamless steel pip...Read more -
Advantages and disadvantages of hot rolled steel
Hot rolled is relative to the terms of the cold-rolled, cold-rolled is in the recrystallization temperature below the rolling, and the hot rolling is carried out at above the recrystallization temperature rolling. Advantages: hot rolled can damage the cast microstructure of the steel ingot, refin...Read more -
Accident causes and prevention of oil and gas pipeline engineering disasters
Gas Pipeline Hazardous Factors Under normal circumstances, the gas is transported in a closed system, once the system failure leading to custody transfer of natural gas leaks, natural gas is mixed with air to form an explosive gas to reach the explosive limit or a case of point water will fire ex...Read more -
Do you Know the History of Scaffolding ?
Antiquity Sockets in the walls around the paleolithic cave paintings at Lascaux, suggest that a scaffold system was used for painting the ceiling, over 17,000 years ago. The Berlin Foundry Cup depicts scaffolding in ancient Greece (early 5th century BC). Egyptians, Nubians and Chinese are also re...Read more -
Difference between black steel pipe and carbon steel pipe
In general, black steel pipe and carbon steel pipe have about the same procedures for welding. That is if you are talking about general welding and not for some specific application like very cold temperatures. Black steel pipe is not really a specification but rather a generic term used primaril...Read more -
Cold drawn precision pipe welding quality problems and solutions
1. Cold drawn precision tubes Weld Butt Weld occur during welding, the main welding jig is not enough stroke and docking jig when two conditions caused by too fast. a, butt welding jig stroke enough. Cold drawn precision pipe connections before and after docking with the milling cutter mark trial...Read more
