About Us
Focus on Precision Investment Casting & Valve Manufacturing Since 1987

SDPLDL is specialized in manufacturing in precision investment casting valves, stainless steel large-diameter valves and wear resistant valves for diverse industries ranging from flow control applications in water treatment, pharmaceuticals, and food & beverage, to heavy engineering projects in mining, oil & gas, and power plant.

  • Support custom working pressures, nominal diameters, and actuation.
  • Tailored to your drawings, from food-grade to wear-resistant solutions.
  • Built with over 200 sets of advanced equipment, tested via in-house testing facility.
  • Compliance with ISO 9001 standard
About Us
About Us
Explore Our Global Impact
Industrial Valves
Ball Valves

Ball Valves

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Gate Valves

Gate Valves

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Globe Valves

Globe Valves

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Check Valves

Check Valves

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Actuated Valves

Actuated Valves

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Investment Casting Hollow Balls & Valve Balls

Investment Casting Hollow Balls & Valve Balls

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Industrial Stainless Steel Large Diameter Valves

Industrial Stainless Steel Large Diameter Valves

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Wear-Resistant Valves/Slurry Valves

Wear-Resistant Valves/Slurry Valves

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Customer Projects
All Projects
Customer Projects
Shandong Gold Group – Jiaojia Gold Mine

The tailings system at Jiaojia Gold Mine adopted the wear-resistant ball valves, which have received positive feedback for their stable long-term performance.

Customer Projects
Angang Group – Gongchangling Mining

Gongchangling Mining has continuously used the wear-resistant ball valves in its mining operations for many years.

Customer Projects
Baowu Group – Luohe Mining

Luohe Mining has long adopted our slurry valves, featuring a compact structure design, reduced installation space requirements, and minimized dust accumulation during operation.