Connection method of large diameter spiral steel pipe (SSAW): The common connection method of large-diameter spiral steel pipe is welding, but in some projects, threaded connection, flange connection, socket connection, groove connection and other forms are often used. 1. Welding, flange connection Welding and flange connection are traditional spiral steel pipe connection methods, which are far from meeting the…
Read MoreSeamless steel pipe (SMLS) is an important type of steel. For seamless steel pipes, seamless steel pipes should also be numbered in the process of production and use. Only when the numbering is properly marked will the performance of the seamless steel pipe be better brought into play. There are also many problems to be paid attention to in…
Read More1. Spiral submerged arc welded steel pipe (SSAW) and longitudinal submerged arc welded steel pipe (LSAW) In the 1950s and 1960s, spiral steel pipes were widely used in oil and gas pipelines. In the 1970s and 1980s, they were severely challenged by longitudinal submerged arc welded steel pipes (LSAW steel pipe) and ERW steel pipes. So far, spiral steel…
Read MoreElbows are used to change the direction of the pipe. The bending angles of commonly used elbows are 90 °, 45 ° and 180 °. The 180 ° elbow is also called a U-shaped elbow. There are also elbows with special angles, but the number is very few. 1. Cast iron elbow Malleable cast iron elbow is the most…
Read MoreXINYUE STEEL GROUP set up several production bases in Tianjin & Hebei Province, manufacturing ERW Steel Pipe, SSAW Steel Pipe, LSAW Steel Pipe, Seamless Steel Pipe, Scaffolding system and couplers, RHS, SHS, etc.
