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B16 Stud Bolt China Manufacturer
QS Fastener: B16 Stud Bolt China Manufacturer
Name: B16 Stud Bolt China Manufacturer
Standard: ASME
Material: A193 B16
Thread: 10 UNC
Size: 1-1/2 Inch
Total Length: 30 to 1000 mm
Surface Treatment: Black
Standard: ASME
Material: A193 B16
Thread: 10 UNC
Size: 1-1/2 Inch
Total Length: 30 to 1000 mm
Surface Treatment: Black
Quantity
ASME A193 B16 Stud Bolt – High-Strength Fastener for Critical Service
The ASME A193 B16 stud bolt is a high-strength threaded fastener manufactured from chromium-molybdenum alloy steel, designed and produced in full compliance with ASME standards. It delivers outstanding mechanical properties and retains excellent tensile strength at elevated temperatures, making it a preferred choice for bolting pressure vessels, pipeline flanges, valves, and reactor nozzles in oil and gas, petrochemical, chemical, and power generation facilities. Available in overall lengths from 30 mm to 1000 mm with a 1-1/2 inch 10 UNC thread configuration, this stud bolt accommodates a wide range of equipment designs and installation conditions.
The ASME A193 B16 stud bolt is a high-strength threaded fastener manufactured from chromium-molybdenum alloy steel, designed and produced in full compliance with ASME standards. It delivers outstanding mechanical properties and retains excellent tensile strength at elevated temperatures, making it a preferred choice for bolting pressure vessels, pipeline flanges, valves, and reactor nozzles in oil and gas, petrochemical, chemical, and power generation facilities. Available in overall lengths from 30 mm to 1000 mm with a 1-1/2 inch 10 UNC thread configuration, this stud bolt accommodates a wide range of equipment designs and installation conditions.
A key factor that determines the service life and reliability of the B16 stud bolt is its surface finish. To combat corrosion, galling, and wear in harsh service environments—including exposure to H₂S, CO₂, steam, and dilute acids—the bolt is typically given a black oxide coating (magnetite, Fe₃O₄). This conversion coating, applied via a controlled hot alkaline bath at 130–150°C for 10–30 minutes, forms a dense, uniform layer 0.5 to 1.5 microns thick. The oxide film not only improves corrosion resistance by 30–50% in dry or low-humidity atmospheres but also imparts a microporous structure that retains lubricants, reducing friction during make-up and minimizing the risk of thread galling. With a surface hardness of approximately HV 300–400, the coating enhances abrasion resistance, helping the fastener maintain clamping force over extended service intervals.
Rigorous process control is essential to achieving consistent coating quality. Pre-treatment steps—degreasing, descaling, and surface activation—ensure a clean substrate, while post-treatment rinsing, drying, and oil sealing complete the process. These measures significantly mitigate stress corrosion cracking and hydrogen embrittlement, particularly critical in sour-service applications. When you source this component from a reputable China manufacturer, you gain access to vertically integrated production lines with in-house heat treatment and coating facilities, enabling strict adherence to dimensional and metallurgical specifications while keeping lead times competitive. Many established China manufacturer operations also offer third-party testing and certified material test reports, providing full traceability from melt to finished part.
In short, the ASME A193 B16 stud bolt combines high-temperature strength, ductility, and fatigue resistance with a proven black oxide surface treatment that extends service life in demanding conditions. Whether used in refinery heaters, subsea manifolds, or superheater headers, this fastener delivers the safety margin and long-term stability that engineers require. Partnering with a qualified China manufacturer ensures that each lot meets ASME dimensional tolerances, thread fit, and coating thickness requirements—backed by modern quality systems that support global project specifications. For critical bolting applications where failure is not an option, the B16 stud bolt remains a technically sound, cost-effective solution.
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