... , straight pipe and locking band , 3.silvery or painting 1. chimney system: mainly including :straight pipe, different degree bend , tee,,lock ... twist wall5.thinckness: 0.5mm6.insulation :ceramicA great chimney system can make you stove clean, and keep the environment good ... with our patent. This product is suitable for chimney system. The producing process of prefabricated stainless steel chinmey is ...