boiler chain grate stoker 1. Type: boiler parts 2. Function: for Grate 3. Delivery time: 20 working days after prepayment boiler chain grate stokerMost advanced water-fire tube boiler in China, which is strong, highly effective, and with small volume , quick delivery time. Any questions plz contact with us. Sincerely hope to long term business relationship with your esteemed company.