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Detail informations: Specifications:400*400,500*500,600*600,700*700 and so on Material:Ductile Iron,Grey iron Size: According the customer's request B-125 300×300 30Kg 200×200 7kg 300x300 10kg 500x500 35kg 400x400 17kg 570x445 35kg 485x360 22.5kg600x600 35kg 500x500 29kg700x70040kg 600x600 42kg800x800 45kg 700x700 55kg C--250 400x400 35kg 300x300 15kg 500x500 40kg 400x400 23kg 550x550 45kg 450x450 30kg 570x445 45kg 485x360 28.5kg 600x600 45kg 500x500 34kg 600x800 60kg 500x700 52.4kg D--400 400x400 75kg 300x300 20kg 500x500 75kg 400x400 32kg 550x550 75kg 450x450 41kg 600x600 75kg 500x500 48kg 600x800 75kg 500x700 69kg 700x700 75kg 600x600 70kg 800x800 80kg 700x700 95kg 900x900 90kg 800x800 113kg 1000x1000 100kg 900x900 154kg The high quality and competitive price can available.We can also produce according per customer's design.