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Our customized steam turbine couplings are key transmission assemblies for turbine main steam valves, governing valves and actuator systems. Made of high-temperature resistant alloy steel through integral forging and multi-axis CNC precision machining, all couplings are tailor-made according to customer drawings, unit parameters and on-site assembly requirements.
As a connecting component between valve stem and lifting mechanism, the coupling converts actuator thrust into stable linear movement to control valve opening and closing. Its symmetrical cross sliding structure ensures uniform force distribution, effectively avoiding jamming, abnormal wear and transmission failure under long-term high-temperature steam and alternating load conditions, securing stable operation of turbine units.
Core Customization Strengths
Full Drawing Customization
Custom overall dimension, flange size, pin hole position, sliding groove depth, through-hole and mounting boss
Support single-piece maintenance spare parts and mass order for new power plant construction
Fully interchangeable spare parts matching for all steam turbine brands
High-Temperature Wear-Resistant Alloy Materials
Optional high-performance steel grades for supercritical & ultra-supercritical units (540℃~620℃): 12Cr1MoV, 2Cr12NiMoWV, F91, F92 alloy steel
High tensile strength, excellent anti-fatigue, anti-creep and oxidation resistance
Complete Material Test Certificates (MTC), chemical composition and mechanical property inspection reports provided for power plant acceptance
Advanced Precision Machining Technology
Integral forging forming to optimize internal metal grain flow, eliminate internal pores and cracks
Multi-axis CNC milling for cross sliding surfaces, pin holes with ultra-tight tolerance control, small assembly clearance and smooth sliding
Burr-free fine finishing; optional nitriding, quenching and tempering surface strengthening treatment to improve wear resistance
Strict symmetry inspection to guarantee balanced stress during reciprocating movement
Outstanding Operating Performance
Stable power transmission: Balanced force bearing, no eccentric wear during frequent valve opening-closing cycles
High temperature adaptability: No permanent deformation under long-term high-temperature working environment
