Manufacturing Excellence of ASME SA193M Gr.B7 Bolts

2025-09-23 08:47:59

At ASM, we take pride in delivering high-performance fastening solutions that meet the most demanding industrial standards. The manufacturing process of our ASME SA193M Gr.B7 bolts is carried out with the utmost precision, ensuring reliability, durability, and consistent performance in critical applications across energy, petrochemical, and heavy machinery sectors.

Advanced Heat Treatment for Superior Mechanical Properties
Heat treatment is a defining step in enhancing the mechanical properties of alloy steels. For Gr.B7 bolts, we employ a rigorous quenching and tempering process:

• Quenching – Bolts are heated to a high temperature, held for uniformity, and then rapidly cooled to achieve exceptional hardness and tensile strength.

• Tempering – A subsequent heating at controlled lower temperatures relieves internal stresses, improves toughness and ductility, and ensures long-term stability of the fastener.

Surface Treatments for Corrosion Resistance and Longevity
To further enhance durability and wear resistance, our bolts undergo specialized surface finishing treatments:

• Electro-galvanizing – A protective zinc layer is deposited to guard against corrosion in demanding environments.

• Black oxide finishing – A dense oxide film is formed on the surface, increasing rust resistance and improving overall appearance.

Precision Machining for Perfect Fit and Performance
Every bolt is produced through advanced machining operations, including cold forging, turning, and grinding. This ensures:

• High-precision threading for flawless engagement.

• Structural integrity across the entire bolt body.

• Consistency with stringent design and dimensional standards.

At ASM, we don’t just manufacture fasteners—we engineer confidence and performance into every Gr.B7 bolt. Our unwavering commitment to quality and innovation makes ASM the trusted partner for industries worldwide that demand excellence without compromise.