Welding construction shall be carried out in strict accordance with the welding operation instruction. The welding equipment must be inspected before use. Unqualified equipment is strictly prohibited from entering the construction site. Self-inspection and mutual inspection shall be carried out during welding to control welding quality.

High temperature steel prefabricated steam directly buried insulation steel pipe is widely used in liquid, gas transmission pipe network, chemical pipeline insulation engineering petroleum, chemical, centralized supply, air conditioning and ventilation pipeline, municipal engineering, etc.

Polyethylene (3PE) anticorrosive coating with three-layer structure has been widely used in the oil pipeline industry due to its good corrosion resistance, water vapor permeability resistance and mechanical properties. This kind of anticorrosive layer steel pipe end is prone to the problem of warping due to corrosion.

In our ordinary life, we will find steel pipes everywhere. Thin-walled welded pipes such as tap water use steel pipes, natural gas transportation use steel pipes, and thin-walled welded pipe bicycle brackets also use steel pipes. So is there a kind of steel pipe can be used in all aspects? In fact, there is really this kind of steel pipe, that is straight seam welded pipe. So the emergence of straight seam welded pipe is really a revolution in the history of steel pipe. So why does the straight seam welded pipe have so many functions? In normal life, we can see that there are many pipeline systems. Except for some special pipes, most of the pipes are made of steel pipes. However, steel pipes exposed to the outside will easily rust.

Many people doubt the corrosion resistance of 3pe elbow anticorrosive steel pipe and 2pe elbow anticorrosive steel pipe. As long as you understand the manufacturing technology of 3pe elbow anticorrosive steel pipe and 2pe elbow anticorrosive steel pipe, you will understand that 3pe elbow anticorrosive steel pipe and 2pe elbow anticorrosive steel pipe have the same corrosion resistance as ordinary anticorrosive steel pipe. The 3pe elbow anti-corrosion steel pipe looks messy because the anti-corrosion of both ends on specific equipment. And the equipment is unable to meet the construction of the elbow. Generally speaking, only straight pipes are required to end construction on the equipment. About 3PE or 2PE anti-corrosion of elbow pipe, the general solution is as follows: