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Premium Forged Round Bars & Heavy Steel Forgings from China

Zhangjiagang Guangda Special Material Co., Ltd. – ISO-certified manufacturer of high-performance alloy steel, precision gears, wind turbine components, and large castings. Trusted by global industrial leaders since 2003.

About Guangda Special Material

Zhangjiagang Guangda Special Material Co., Ltd. was established in 2003 and is located in Jiangsu Province, beside Shanghai. As a high-tech enterprise, we specialize in advanced special alloy materials and belong to the "advanced iron and steel materials" industry – a state-supported strategic emerging sector.

With strong scientific research capabilities, extensive market experience, and a complete industrial supply chain, we offer integrated services from smelting and casting to forging, heat treatment, and precision machining.

  • ISO-Certified Quality Control
  • Advanced Automatic Production Lines
  • Global Export Experience
  • Professional R&D and Testing Lab
Heavy Steel Forgings

Our Premium Products

Discover our wide range of high-performance forged and cast components for wind energy, industrial machinery, and heavy equipment.

Alloy Steel Forging Transmission Shaft

Alloy Steel Forging Transmission Shaft

Industrial Drive Shaft for heavy-duty applications, precision-forged for durability.

  • Material: 35CrMo4, 42CrMo
  • Standards: DIN, ASTM, GB
  • Application: Crushers, grinders, industrial drives
Lead Ingot

Lead Ingot

High-purity lead ingots for industrial and chemical applications.

  • Purity: 99.99% Pb
  • Weight: 25kg, 40kg
  • Supply: Factory-direct, China
Forged Gear Blanks

Forged Gear Blanks

High-strength gear blanks for wind turbines and industrial gearboxes.

  • Material: 18CrNiMo7-6, 17CrNiMo6
  • Diameter: Up to 2000mm
  • Standards: DIN 1.6587, AISI 4320
Internal Bevel Helical Gear

Internal Bevel Helical Gear

Precision-cut internal gears for wind turbine gearboxes.

  • Material: 18CrNiMo7-6
  • Type: Ring & Pinion, Planetary
  • Application: Wind power, heavy machinery
Wind Turbine Castings

Wind Turbine Castings

Rotor hubs, nacelle elbows, and main carriers in ductile iron.

  • Material: EN-GJS-400-18-LT
  • Capacity: 2-12MW turbines
  • Standards: QT400-18AL
Planetary Gears

Large Diameter Planetary Gears

High-torque gears for wind turbine gearboxes and industrial drives.

  • Material: 18CrNiMo7-6
  • Module: Up to 20
  • Application: Gearbox components
Forged Shaft

Forged Shaft

Custom drive shafts and turbine shafts for power transmission.

  • Material: 42CrMo4, 34CrNiMo6
  • Length: Up to 10,000mm
  • Heat Treatment: QT, Normalizing
Precision Gears

Precision Gears

Custom spur, helical, and bevel gears for high-load applications.

  • Materials: Alloy steel, stainless steel
  • Tolerance: DIN 5 to DIN 7
  • Processing: CNC hobbing, grinding

Why Choose Guangda?

High Quality Assurance

Strict quality control system with professional testing laboratory. ISO-certified processes ensure consistency and reliability.

Advanced Manufacturing

Equipped with automated forging, casting, and machining lines. Full in-house control from ingot to finished product.

100% Customer Service

Dedicated support team for technical consultation, order tracking, and after-sales assistance. We solve your industrial challenges.

2003
Founded
+50
Countries Served
1000+
Custom Projects
100%
Quality Inspected

Contact Guangda Special Material

Reach out for quotes, technical support, or custom manufacturing inquiries.

0086-0512-58591731
+86 139 6247 3889
Langanqiao Development Zone, Fenghuang Town, Zhangjiagang City, Jiangsu Province, 215614, China

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