... : We can produce gate, globe, check, ball and butterfly valves with the materials of ductile iron, carbon steel, alloy steel, stainless ... to order. Our products are designed and manufactured in accordance with the standards of GB, ASME, ANSI, API, BS, DIN, JIS ... facilities and inspecttion equipments have been employed in Shanghai Huatong Valve Co., Ltd. Based on the first-class management and advanced ...