China is already the world's largest producer and consumer of building materials. The production of cement, flat glass, building sanitary ceramics, stone materials and wall materials, etc. is the first in the world for many years. At the same time, the quality of building materials continues to improve, the consumption of energy and raw materials decreases year by year, various new building materials continue to emerge, building materials products continue to upgrade, Cangzhou pipeline equipment manufacturing industry has a solid foundation. There are more than 3200 production enterprises, 222 of which are above Designated Size (with sales revenue of more than 5 million yuan), and 124000 employees. The main products are various kinds of seamless steel pipes with various diameters such as special steel, stainless steel, carbon steel, low, medium and high pressure boiler pipes, oil drilling pipes, etc.; various elbow pipe fittings such as tee, cross, valve, reducer, etc.; various stainless steel flanges, forged flanges, various pipe fittings such as pipe racks, instruments, oil blowout preventers, etc.; various polyethylene pipes, polypropylene pipes and other plastic pipes, totaling 16 There are more than 370 varieties and more than 3500 specifications. The manufacturing process mainly adopts hot-rolled straight seam welding, spiral double-sided submerged arc welding, forging, forging, medium frequency pushing, cold forming, hot extrusion, etc., with the maximum processing diameter of 2020 mm. Products are widely used in municipal, petrochemical, West to east gas transmission, shipping and nuclear power engineering fields, with an annual design and processing capacity of 25 million tons. In 2010, the industrial added value of Enterprises above Designated Size reached 13 billion yuan, a year-on-year increase of 31.7%, accounting for 16.1% of the total added value of Enterprises above designated size. Cangzhou pipeline equipment manufacturing industry is moving towards the goal of "three top" (scale, level and equipment) and "three high" (high-end, high-pressure and high added value), striving to promote the capacity of pipeline equipment manufacturing industry to reach 30 million tons. Cangzhou will become a well-known "pipeline equipment manufacturing and R & D base" and "the capital of pipeline equipment" at home and abroad. The infrastructure investment in the 11th five year plan has reached the middle of the board. The explosive growth of infrastructure construction investment such as roads and railways and the steady growth of ordinary civil construction investment have made the construction industry in a booming stage. At the same time, in the context of building an energy-saving society and strengthening the capacity of independent innovation, the theme of energy-saving and technological innovation will be the development hotspot of the industry.