Nowadays, energy saving has become the development theme of all countries in the world, so more environmentally friendly prefabricated direct-buried thermal insulation pipes are widely sought after by everyone, especially since the 1970s and 1980s, to save energy, reduce emissions, and reduce energy consumption, Its application gradually began to be valued by everyone.
Today, the most widely used insulation pipe is made of polyurethane material. This material has been widely used abroad due to its many advantages and characteristics, especially in some countries in Europe and the United States. The content of this material in thermal insulation materials has reached 20%. However, in China, due to its late start, there is little demand for this material. High-standard insulation materials are still lagging, and the content of our polyurethane in insulation materials is only about five percent. Against this background, there is still a lot of room for progress in the development of insulation pipe materials in our country.
The production of
spiral steel pipes is by industry standards to ensure that the basic conditions are met. It is the most basic to make pipes according to the needs of customers, regardless of whether the customers indicate it in the contract. This inspection must be carried out by the standards and ensure that the inspection results comply with the standards. Such as chemical composition, mechanical properties, dimensional deviation, surface quality, flaw detection, hydraulic pressure test, or process performance tests such as flattening or flaring, are all must-have conditions.
