Stud bolts, also known as double end studs, are used for secure connections between flanges, machinery parts, and structural components. They provide strong fastening performance and are widely applied in pipelines, valves, pressure vessels, machinery, and industrial assemblies.

HDG double end studs comply with DIN938/DIN939 and ASME B16.5, with a smooth unthreaded middle shank for flanges, valves, and pressure vessels. Centrifugal treatment removes excess zinc on dual threads; matched overtapped A194 2H nuts ensure smooth torque tightening. High-strength alloy studs adopt a baking process to avoid hydrogen embrittlement. A thick zinc coating of 50–85μm resists salt and abrasion, with moisture-proof pallet packaging for petrochemical and desalination projects.

In heavy industrial piping, suspended MEP (Mechanical, Electrical, and Plumbing) infrastructure, and chemical plant construction, standard hex bolts a...

This DIN975/DIN976 steel double ended stud bolt is designed for industrial fastening, threaded connections and equipment assembly. Available in grades 4.8 and 8.8 with black and zinc surface options.

Custom M6-M24 double ended stud bolts in steel or stainless steel, with zinc or plain finishes for machinery and industrial fastening.

ASTM A193 Gr B7 double ended stud bolts in M4-M36, with steel and stainless steel options, multiple grades, zinc or plain finishes.

DIN938 double ended stud bolts with right-hand threads, black oxide finish and 4.8-12.9 grade options for industrial fastening.