Steel pipe sc means welded steel pipe.
Welded steel pipe laying used in the labeling, according to the national standard atlas "construction electrical engineering design commonly used graphic and text symbols" (00DX001) in the provisions of: SC-indicates that the conductor through the welded steel pipe laying. sc (run in welded steel conduit).
Welded steel pipe refers to the use of steel strip or steel plate bending and deformation into a round, square and other shapes and then welded into the surface of the steel pipe with seams, welded steel pipe billet used is a steel plate or strip.
Since the 1930s, with the rapid development of high-quality strip steel rolling production and welding and inspection technology progress, the quality of welded seams continue to improve, welded steel pipe varieties and specifications are increasing, and in more and more areas to replace the seamless steel pipe. Welded steel pipe than seamless steel pipe low cost, high production efficiency