A193 B16 Screw China Manufacturer

QS Fastener: A193 B16 Screw China Manufacturer

Name: A193 B16 Screw China Manufacturer
Standard: ASTM
Material: A193 B16
Size: 1/2 to 4 inch
Total Length: 30 to 1000mm
Thread: UNC
Grade: 8.8
Application: Oil Pipeline, Machinery, Chemical Industry, Building

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The ASTM A193 B16 Screw is a high-performance fastener manufactured in strict accordance with ASTM standards, utilizing chromium-molybdenum alloy steel. This material delivers exceptional strength, toughness, and resistance to corrosion, making it a reliable choice for demanding service environments. Available in diameters from 1/2 to 4 inches and lengths ranging from 30 to 1000 mm, with UNC thread configuration, this screw is engineered to meet the needs of oil and gas pipelines, heavy machinery, chemical processing plants, and structural steel construction.

What sets this fastener apart is its carefully controlled heat treatment cycle. The screws undergo austenitizing at 850–900°C, followed by rapid oil or water quenching to develop a high-hardness martensitic structure. Subsequent tempering at 550–650°C refines the microstructure, reducing brittleness while optimizing the balance between hardness and ductility. This quenched-and-tempered condition ensures the screw achieves a minimum tensile strength of 830 MPa, yield strength of 690 MPa, and a Rockwell hardness range of 22–30 HRC. These mechanical values not only meet but often exceed standard requirements, providing dependable performance under high static loads, vibration, and thermal cycling.

For engineers and procurement specialists, selecting a qualified **China Manufacturer** is critical to ensuring product consistency and traceability. A reputable **China Manufacturer** will supply full mill test reports, heat number tracking, and third-party inspection options, which are essential for projects involving sour service, low-temperature impact, or seismic design. The combination of strict process control and robust raw material sourcing allows these screws to deliver superior fatigue life and resistance to stress corrosion cracking—factors that directly reduce maintenance intervals and lifecycle costs in critical bolted joints.

In practice, the **A193 B16 Screw** has proven itself in flange connections, pressure vessel closures, and high-pressure valve assemblies, where joint integrity directly affects operational safety. Its high yield strength minimizes relaxation and gasket compression loss over time, while the tempered structure provides the toughness needed to absorb shock loads without brittle failure. Whether used in offshore platforms, refinery turnaround projects, or heavy equipment manufacturing, this screw offers a dependable fastening solution that balances strength, durability, and cost-effectiveness. When specifications call for a robust, code-compliant fastener, the **A193 B16 Screw** from a trusted **China Manufacturer** consistently delivers the performance and quality that demanding applications require.

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