According to ASTM\ASME\GB\GD\HG\SH and other standards to produce high, medium and low elbow, reducing pipe, tee, tee, big bend, pipe cap, tube fittings and flanges and all kinds of pipe fittings anti-corrosion and insulation technology, annual production capacity of more than 25,000 tons. Products are widely used in petroleum, chemical industry, power, boiler, heating, pharmaceutical, construction, and shipbuilding and many other fields. The leading products of our group are butt welded pipe fittings made of large diameter steel plate (bending radius is 1D-5D, model is DN600-DN3800), of which 90 degrees 2692 is a single sheet hot pressing molding technology for butt welded elbow, which fills the domestic gap and has won the national patent.