Preparation of rubber sheets

Make rubber sheets of different thickness and fabric reinforced rubber sheets by mill and mixer. Cut down these sheets into proper pieces accordingly.

Manual wrapping of fabric reinforced rubber sheets

Raw rubber expansion joint body is mainly manufactured by manual wrapping of rubber sheets and fabric reinforced rubber sheets around a mandrel. Also reinforced steel wires are enwound at both ends for additional reinforcement.

Molding of rubber expansion joints

Rubber expansion joints are placed in molding machines and molded into shape and vulcanized at certain temperature range. Gongyi HuanZhong Pipeline Equipment Co., Ltd. has molds for DN15-DN4000 single sphere rubber expansion joints.

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