... different shape, we make ROD, U, W, H, SPIRAL and DOUBLE - SPIRAL types.Diameter 8mm to 55mm elements can be ... little deformation, stable chemical property, long service life, easy installation and maintenance, etc.SiC heating elements can usually make use for ... the fields of metallurgy, ceramics, glass, machinery, analysis test, semiconductor, science & research and so on. U type SiC heating element