We are a large manufacturer with a neck flange. In addition, we also produce a variety of models with neck flange, flat flanges, high pressure flanges, pressure vessel flange, flange rolling, forging flange, large-diameter flange flange products dominate the market with quality, with sincere customer service, we hope that more attention at home and abroad and friends into the development of Thailand to Rio, and we work together to push forward the industry sincerely look forward to your visit and call to discuss cooperation! weld neck flange is a flange with good performance, it can show a good performance and value in practical application, able to overcome traditional welded flange Existing shortcomings. This welded flange connecting material is reliable two large-diameter pipe, usually, it is made up of several fastening bolts with flanges formed on both, using materials made of carbon steel. Low carbon steel plasticity better, weak intensity, may be appropriate to add some of the carbon element to greater strength. The advantage of this good weld neck flange is reflected in the following aspects: weld neck flange when this material because of its low thermal conductivity at a temperature of 20 degrees, its thermal conductivity in 0.21-0.24W / mk of Inter, than steel, purple pipe is much smaller, and therefore, it has good insulation properties. This welded flange fittings at normal temperature and pressure conditions, the age up to 50 years or even longer. Also has excellent resistance to UV and radiation resistance, less prone to fading, can long-term use. It's very good impact resistance, impact resistance due to the ring of steel has greatly improved over other solid wall pipe, its ring stiffness is usually 1.3 times as much solid wall pipe, so it's natural shock resistance cinch. Its corrosion resistance is very good, except for a few of hydrogenating agent, such welded flange can resist severe erosion variety of chemical media, with good acid, alkali, salt tolerance, less prone to rust phenomenon, but this band neck flange also easy to breed any bacteria.