Schedule 40 WPB Carbon Steel 90 Degree Steel Elbow are mostly connected by welding. In order to improve the quality of welding, elbow pipe end of the car into a groove-like. Leave a certain angle, with a certain edge. Bevel edge angle must be within the specified deviation range. For some special requirements of the elbow pipe, the need for low-temperature toughness impact testing, elbow pipe nondestructive testing, magnetic particle testing and some mechanical testing. roduct line Flange,Elbows, Tees, Concentric and Eccentric Reducers, Pipe Caps, Bends,gaskets, valve(we can also produce the product as the design of the customer) product name: carbon steel elbow Material Carbon steel&nbs…