Steam and Gas Turbine Bolts

High-Strength Steam and Gas Turbine Bolts for Power Generation and Industrial Turbine Applications

Product Overview

Steam and Gas Turbine Bolts are critical fastening components used in turbine assemblies to secure casings, rotors, diaphragms, bearing housings, exhaust sections, combustion systems, and other high-stress structural components. These bolts operate under extreme conditions involving high temperatures, high pressures, vibration, thermal cycling, and continuous mechanical loading.

Because turbine failures can result in costly downtime and safety risks, turbine bolts must be manufactured from premium alloy materials and produced according to strict quality standards. Precision machining, heat treatment, and comprehensive testing are essential to ensure reliable long-term performance.

At Dawopu, we manufacture OEM-quality Steam and Gas Turbine Bolts for power plants, petrochemical facilities, oil & gas installations, marine propulsion systems, and industrial turbine applications. Our bolts are engineered to provide exceptional strength, fatigue resistance, and durability in demanding operating environments.

Functions of Steam and Gas Turbine Bolts

Turbine bolts perform several critical functions:

• Secure turbine casings and flanges
• Maintain structural integrity under thermal expansion
• Withstand high-pressure operating conditions
• Resist vibration and fatigue loading
• Ensure proper component alignment
• Support safe and reliable turbine operation
• Minimize maintenance and downtime

Properly designed and manufactured bolts are essential for turbine safety and performance.

Product Features

High Temperature Resistance

Designed to maintain mechanical properties under elevated operating temperatures.

Excellent Tensile Strength

Capable of handling extreme clamping forces and operating loads.

Superior Fatigue Resistance

Engineered for long-term operation under cyclic loading conditions.

Outstanding Creep Resistance

Maintains dimensional stability during prolonged exposure to high temperatures.

Corrosion Resistance

Suitable for steam, gas, and industrial process environments.

Precision Manufacturing

Produced to strict dimensional tolerances for critical turbine assemblies.

Material Options

ASTM A193 B16 Alloy Steel

Features:

• Excellent high-temperature strength
• Good creep resistance
• Commonly used in turbine applications

ASTM A453 Grade 660

Features:

• High-temperature corrosion resistance
• Superior mechanical properties
• Excellent stress rupture performance

Inconel 718

Features:

• Outstanding high-temperature performance
• Excellent oxidation resistance
• Superior fatigue strength

Inconel 625

Features:

• Exceptional corrosion resistance
• High strength at elevated temperatures
• Long service life

AISI 4140 Alloy Steel

Features:

• High strength
• Excellent toughness
• Suitable for medium-temperature applications

Custom Materials

Dawopu can manufacture according to customer specifications and OEM requirements.

Available Products

Turbine Casing Bolts

Used to secure turbine upper and lower casing sections.

Turbine Stud Bolts

Designed for high-pressure flange and casing applications.

Rotor Retaining Bolts

Secure critical rotor assemblies.

Bearing Housing Bolts

Used in turbine bearing support systems.

Exhaust Casing Bolts

Suitable for high-temperature exhaust sections.

Combustion System Bolts

Used in gas turbine combustion assemblies.

Technical Specifications

Manufacturing Process

To ensure maximum reliability, Dawopu follows strict production procedures:

1. Material Selection
2. Forging or Bar Stock Preparation
3. CNC Turning
4. Thread Rolling or Thread Cutting
5. Heat Treatment
6. Precision Grinding
7. Surface Finishing
8. Dimensional Inspection
9. Mechanical Testing
10. Final Quality Approval

Applications

Steam Turbines

Used in utility power generation and industrial turbine systems.

Gas Turbines

Applied in power generation, aviation, and industrial gas turbine assemblies.

Combined Cycle Power Plants

Supports turbine and generator fastening systems.

Petrochemical Facilities

Used in high-temperature process equipment.

Oil & Gas Industry

Suitable for turbines, compressors, and power systems.

Marine Turbines

Applied in marine propulsion and onboard power generation equipment.

Industrial Rotating Equipment

Supports critical fastening requirements in heavy machinery.

Dawopu Manufacturing Capability

Dawopu specializes in manufacturing precision fasteners and critical turbine components.

Our capabilities include:

• Hot Forging
• CNC Turning
• Thread Rolling
• Thread Grinding
• Heat Treatment
• Non-Destructive Testing
• Mechanical Testing
• Reverse Engineering
• OEM & ODM Production

We manufacture according to:

• OEM drawings
• ASTM standards
• DIN standards
• ISO standards
• Customer technical specifications

Quality Assurance

Every turbine bolt undergoes comprehensive inspection procedures:

• Raw material certification
• Chemical composition analysis
• Hardness testing
• Tensile testing
• Impact testing
• Dimensional inspection
• Thread profile inspection
• Ultrasonic testing (UT)
• Magnetic particle testing (MPI)
• Final quality approval

These procedures ensure reliable performance in critical turbine applications.

Why Choose Dawopu

• OEM-quality turbine fasteners
• Premium alloy materials
• Advanced manufacturing technology
• Strict quality control system
• Competitive factory pricing
• Fast production lead times
• Global export experience
• Professional engineering support

Steam and Gas Turbine Bolts are essential fastening components that ensure the structural integrity, reliability, and safety of turbine systems operating under extreme conditions. Manufactured from high-performance alloy materials and subjected to rigorous quality control procedures, Dawopu's turbine bolts provide outstanding strength, fatigue resistance, and long-term durability for power generation and industrial applications worldwide.