Customer Case Studies
Build trust with real-world case studies that demonstrate our expertise and service quality.
5MW Wind Turbine Tower Bolt Pre-tightening Project for a Major Wind Power Group
Leading domestic wind power equipment manufacturer
Challenge:Tower flange M64 large-diameter bolt pre-tightening; torque requirement 35000Nm, tolerance ±3%, confined working space at height.
Results:Single turbine fastening time reduced from 8 to 3 hours; torque accuracy met all requirements, earning high customer satisfaction.
Pipeline Flange Bolt Torquing Project at Petrochemical Base
Large-scale petrochemical enterprise
Challenge:DN800 Pipe Flange M48 Bolt Pre-tensioning, Explosion-proof Requirements, Pressure Rating PN160, Zero Leakage Standard
Results:Passed pressure testing on the first attempt with zero leaks, earning recognition for safe production.
Ship Engine Assembly Project at a Shipyard
Leading Shipbuilding Manufacturer
Challenge:Pre-torquing main engine cylinder head bolts: torque range 2000-8000 Nm. Limited cabin space and high corrosion protection requirements.
Results:40% increase in assembly efficiency, 3x longer tool lifespan
Steel Rolling Equipment Maintenance Project at a Steel Mill
Large-scale steel group
Challenge:Rolling mill housing bolt pre-tightening, torque value 15000Nm, high-temperature dust environment, downtime limited to 4 hours.
Results:Complete all fastening in 3.5 hours to resume production early and reduce downtime losses.
Conventional Island Bolt Pre-tightening Project at a Nuclear Power Plant
Nuclear Power Operations Company
Challenge:Turbine casing bolt pre-tightening for nuclear safety class: torque accuracy ±2%, with traceable data.
Results:Passed nuclear safety acceptance; established a complete torque data archive
Steel Bolt Tightening Project for a Cross-River Bridge
Large-scale construction enterprise
Challenge:Main bridge steel box girder M36 high-strength bolt pre-tensioning; working at height with high torque coefficient variability.
Results:100% accepted; digital construction records established