Aqua Trading Company Luoyang tells you: welding defect is welded pipe welding process, the welded joint design or process does not comply with the requirements of defects. Its manifestations are mainly welding cracks, holes, undercuts, incomplete penetration, lack of fusion, slag, welding tumor, collapse, pits, burn, and inclusions. This is a very interesting phenomenon: the art of welding is usually reflected in a number of failed operation among industrial welding, or welding defects inherent in some of the industrial welding keen to avoid being. Aqua Trading Company Luoyang tells you: stamping elbow elbow was first used in mass forming process seamless large-diameter welded pipe, welded pipe GB currently in production elbow common specifications that have been hot extrapolation or replaced by other forming process welding fittings standard, but in some of elbow due to a small number of production, the thickness is too thick or too thin. When the product is still in use with special requirements. Stamping elbow and elbow using an outer diameter equal to the tube, using a press in a mold direct compression molding. Before stamping, tube placed on the lower mold, the inner core and the end of the tube into the mold, the mold pressing downward movement began, through binding and supporting role within the mold so that the outer mold forming elbow. Hebei welded pipe, welded pipe, Aqua-commerce provided by Luoyang Aqua Trading Company. Luoyang Aqua Trading Company (www.lyhpgj.com) (www.lyhpgj.com) quality of service and products, continue to receive the recognition and trust of new and old customers and the industry. Our company is a certified member of the whole alliance network operators, business alliance customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!