SMC Waffle Tapered DrumUsed as ventilation channels in cleanrooms with high purity requirements and as interior surface materials in workshops, the product necessitates the use of high-grade unsaturated resins, glass fibers, and other chemical materials. Besides meeting requirements such as environmental protection, non-toxicity, resistance to acids and alkalis, anti-corrosion, and no volatile substances on the product surface, it must also comply with international fire prevention, flame-retardant, and low smoke-toxicity standards.Compared to straight barrels, its advantage is that it reduces the amount of concrete used, thereby reducing its own weight.