Industrial Valves
Industrial Valves
Custom-engineered to deliver capabilities required for your unique flow control environments

Industrial Stainless Steel Large Diameter Valves

Casting Range
  • Materials: Stainless steel and carbon steel, including SS304, SS316, SS316L, WCB, 1.4408, and others
  • Dimensional Accuracy: Standard accuracy CT4–CT6; selected special workpieces can reach CT3 level
  • Surface Quality: Standard surface roughness Ra ≤ 6.3; can be improved to Ra ≤ 3.2 with special finishing
Large Diameter Ball Valve

Large Diameter Ball Valve

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Large Diameter Gate Valve

Large Diameter Gate Valve

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Large Diameter Check Valve

Large Diameter Check Valve

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Large Diameter Knife Gate Valve

Large Diameter Knife Gate Valve

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Investment Casting & Valve Manufacturing Since 1987

At SDPLDL, we are a trusted manufacturer specializing in precision investment casting and industrial valves for global markets. We operate our own manufacturing facility featuring over 200 sets of advanced manufacturing equipment and an in-house testing center equipped with 16-ton dynamic balancing machines. Our integrated manufacturing capabilities allow us to seamlessly produce precision investment casting valves, custom stainless steel large-diameter valves, and slurry valves under strict compliance with ISO 9001 standards.