Factory in 1988 with the Ministry of Communications jointly developed metal bellows, the product has absorbed the advantages of foreign products to industry-standard National Industry (JG/T3013-94), widely used in highways, bridges, railways, and large-span prestressed concrete construction industry, superior product quality, performance, safe and reliable.
一、Large-caliber series: Power plants, steel rolling, paper mills and other large-scale basic building large-caliber bellows Bolts embedded with bellows

Products Photos:

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Technical Parameters:

Diameter	Φ100	Φ125	Φ150	Φ175	Φ200	Φ225	Φ250	Φ275
OD	Φ107	Φ132	Φ157	Φ182	Φ207	Φ232	Φ257	Φ282