PE给水管材发展前景解析

PE给水管材发展前景解析

　在国外的发达国家和地区，PE管是城际埋地燃气管道中的占有量已达90%以上，在供水管所占市场份额达60%，并且国外在PE管材方面忆经建立起了非常成熟的标准的施工规范。在我国，镀锌管逐步被禁用后，PE管在建筑供水等领域很有竞争优势，在燃气、工业供排水、通讯、农业灌溉等领域PE管材也呈迅速增长的态势，但有些领域的管材标准和规范还未跟上，在一定程度上影响了PE管材的应用和发展。PE管材的分类方法很多，种类也很多。按用途分，可分为建筑和市政给排水管室外燃气管、农用灌溉管、穿线管(电线、电缆及光缆)、排污管等。表1列出了几种常见用途的PE管材。按管材品质和结构分，PE管材可分为普通PE管、铝塑复合管、钢塑复合管、钢塑复合管、加筋(筋为金属丝，网等)管单/双壁波纹管、螺旋管、光缆用硅芯管等。按原材料密度分，可分为高密度管、低密度管以及中密度管(中密度管因用途与高密度管相同，常视为高密度管的一种)。

PE给水管管材与传统的金属管和其它塑料管相比，具有密度低、强度与质量比高、脆给温度化低、韧性好、耐腐蚀绝缘性能好、易着色、易于施工和安装等特点、广泛应用于市政和建筑给排水、燃气、供热采暖、电线电缆穿线、农用节水灌溉和工业排污、矿山矿物输送等领域。与钢管相比，成本可降12%左右，工作寿命长，可达成50a(钢管一般为20a)，而且维护费用低。

　　塑料管的广泛应用，不仅体现在城市场市政和住宅建设中，而且我国农村市场对塑料管的需求也越来越大。与城市大规模、集团化的采购不同的是，农村市场的用户大多是一家一户的个体，采购量小，规格要求多样化。而我国80%的农业人口，又使得这一市场不容被忽视，因此开发多规格、多品种、适合农民使用的各种类型的塑料管，满足农村市场需求，应成为塑料管材加工厂关注的问题。

Analysis of the development prospects of PE water supply pipes

In developed countries and regions abroad, PE pipes account for more than 90% of intercity buried gas pipelines, and account for 60% of the market share of water supply pipes. In addition, foreign countries have established very Mature standard construction specifications. In my country, after galvanized pipes are gradually banned, PE pipes have a competitive advantage in the fields of building water supply. PE pipes are also showing a rapid growth trend in the fields of gas, industrial water supply and drainage, communications, and agricultural irrigation. However, pipes in some areas The standards and specifications have not kept up, which has affected the application and development of PE pipes to a certain extent. There are many classification methods and types of PE pipes. According to the purpose, it can be divided into construction and municipal water supply and drainage pipes, outdoor gas pipes, agricultural irrigation pipes, threading pipes (wires, cables and optical cables), sewage pipes, etc. Table 1 lists several common PE pipes. According to pipe quality and structure, PE pipes can be divided into ordinary PE pipes, aluminum-plastic composite pipes, steel-plastic composite pipes, steel-plastic composite pipes, reinforced (reinforced metal wire, mesh, etc.) pipes, single/double-wall corrugated pipes, Spiral tubes, silicon core tubes for optical cables, etc. According to the density of raw materials, it can be divided into high-density tubes, low-density tubes and medium-density tubes.

Compared with traditional metal pipes and other plastic pipes, PE water supply pipes have the characteristics of low density, high strength-to-quality ratio, low brittle feed temperature, good toughness, good corrosion resistance and insulation performance, easy coloring, easy construction and installation, etc. , Widely used in municipal and building water supply and drainage, gas, heating, wire and cable threading, agricultural water-saving irrigation and industrial sewage, mine mineral transportation and other fields. Compared with steel pipes, the cost can be reduced by about 12%, the working life is long, up to 50a (steel pipes are generally 20a), and the maintenance cost is low.

　　 The wide application of plastic pipes is not only reflected in the municipal market and housing construction in the city market, but also the demand for plastic pipes in the rural market in my country is also increasing. Different from large-scale and group-based purchases in cities, users in the rural market are mostly individual households, with small purchases and diversified specifications. And 80% of my country’s agricultural population makes this market not to be ignored. Therefore, the development of various types of plastic pipes with multiple specifications and varieties suitable for farmers to meet the needs of the rural market should become a concern for plastic pipe processing plants. .