How to avoid high-temperature thread seizing? Why choose PTFE Coated Stud Bolts With Hex Nuts for industrial flange connections?

Many petrochemical and thermal power projects face frequent thread galling and rust failure after long-term high-temperature operation. Ordinary fasteners fail to resist acid and salt mist erosion, leading to repeated disassembly and high maintenance expenditure. As a reliable anti-corrosion fastener solution, PTFE Coated Stud Bolts With Hex Nuts can effectively solve the above industrial troubles, with certified salt spray resistance reaching 500 hours after complete coating treatment. Ningbo Gangtong Zheli Fastener Co., Ltd has focused on the production of industrial flange fasteners for many years to deliver stable quality for global engineering clients.

Stable Coating Technology & Custom Size Support

The rolling thread processing technology ensures uniform thread pitch and smooth meshing with matching hex nuts. The PTFE coating thickness is controlled within 25μm to 50μm, balancing anti-rust performance and assembly tightness. A wealth of optional length specifications allows engineers to select suitable sizes for different equipment, and customized color coating service is available to match site design requirements. The perfect matching of raw material and surface craft makes PTFE Coated Stud Bolts With Hex Nuts meet all international high-pressure connection standards.

Practical Installation Effect on Pressure Vessel Flanges

Field installation is the most intuitive way to verify fastener performance. Workers install flange fasteners on pressure vessel equipment, and the uniform protective coating can maintain stable fastening performance under continuous temperature fluctuation. The supporting hex nuts adopt the same base material as the stud bolts to keep consistent thermal expansion coefficient, preventing loose connection gaps. Engineering purchasers can check the actual service performance of PTFE Coated Stud Bolts With Hex Nuts through on-site assembly cases.

Strict Inspection Standard to Guarantee Long Service Life

Three core inspection procedures will be carried out for every batch of finished products: raw material hardness test, coating thickness detection and thread matching tightness test. Sufficient raw material inventory supports continuous bulk supply for overseas engineering orders, and multi-type export packaging can adapt to sea and air transportation modes. All testing links are formulated strictly to keep the long-term stable performance of PTFE Coated Stud Bolts With Hex Nuts for global industrial projects.

Ningbo Gangtong Zheli Fastener Co., Ltd provides one-stop customized service of coating, length and packaging for all overseas buyers.