Key Service Content

• Hot straightening for bent blade tips, with controlled heating at 700~900℃ and slow cooling

• Professional welding repair for missing blade sections following class-approved WPS

• Precise profile restoration by template and grinding

• Dye penetrant testing (PT) for all repaired areas to ensure quality

• Polishing and dimension inspection to meet propeller performance standards

Project Overview

• Location: Ruitai Shipyard

• Client: Greek Shipowner

• Scope: Propeller straightening, welding repair, non-destructive testing, profile correction

• Result: Repair works fully completed and approved by class and client.
  
  

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Location：Ruitai Nantong Shipyard Co., Ltd.	Propeller Condition Before Repair
Propeller Condition Before Repair
Propeller Condition Before Repair	Blade A: Hot straightening of bent areas
Blade A: Wrapped in blanket for cooling	Blade A: Dye Penetrant Inspection
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Blade A: Dye Penetrant Inspection	Blade A: Suction Surface
Blade B: Hot straightening with gas heating& dedicated spanners	Blade B: Wrapped in blanket for cooling
Blade B: Dye Penetrant Inspection	Stiffening ring weld seam condition
Blade B:Suction Surface	Blade C: Hot straightening of bent areas
Blade C: Wrapped in blanket for cooling	Blade C: Grinding for smooth finish
Blade C: Dye Penetrant Inspection
Blade C: Suction Surface	Blade D: Hot straightening of bent areas
Blade D: Grinding prior to welding	Blade D: Welding as per WPS
Blade D: Template fabricationbased on Blade A profile	Blade D: Position template on Blade D
Blade D: Welding Completed	Blade D: Grinding to specified profile
Blade D: Grinding in progress	Blade D: Dye Penetrant Inspection
Blade D: Dye Penetrant Inspection	Blade A Condition After Repair
Blade B Condition After Repair	Blade C Condition After Repair
Blade D Condition After Repair

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