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NA16 Bolt
NA16 Bolt
NA16 Bolt
NA16 Bolt

NA16 Bolt Chinese Factory Direct

QS Fastener: NA16 Bolt Chinese Factory Direct
Name: NA16 Bolt Chinese Factory Direct
Material: Incoloy 825
Standard: BSW, ANSI, DIN, NF
Size: M45*3
Length: 450 mm
Hardness: Max. 200 HB
Feature: Good resistance to stress corrosion cracking
Application: For Industrial areas where the temperature does not exceed 550 degrees Celsius, Oil Pipeline, Machinery, Chemical Industry, Building
Price: USD 69 -99/ Kg
MOQ: 10kg
Customization: yes
Delivery time: 7-30 Day
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The NA16 Bolt, supplied directly from our Chinese factory, is a high-performance fastener manufactured from Incoloy 825. With dimensions of M45×3 and a total length of 450 mm, this bolt complies with BSW, ANSI, DIN, and NF standards. Its hardness is capped at 200 HB, and it delivers exceptional resistance to stress corrosion cracking. Designed for industrial environments operating up to 550°C, it is widely used in oil pipelines, chemical plants, machinery, and construction. Priced between USD 69–99/kg with a 10 kg MOQ, customization is available, and delivery ranges from 7 to 30 days.
 
Heat Treatment & Performance Optimization
The NA16 Bolt undergoes a two‑stage heat treatment to unlock its full potential. Solution treatment at 980–1020°C (optimized at 1000°C) for 30–60 minutes, followed by water quenching (>100°C/min), creates a supersaturated solid solution that eliminates internal defects. Subsequent aging treatment—first at 720°C for 8 hours, then at 620°C for 8 hours, with air cooling (10–20°C/min)—precipitates strengthening phases (e.g., γ′) that refine the grain structure. This precise regime yields tensile strength ≥650 MPa, yield strength ≥300 MPa, hardness ≥200 HV, and impact toughness ≥100 J/cm², while dramatically improving resistance to pitting and crevice corrosion.
 
Reliability in Extreme Conditions
By sourcing the NA16 Bolt Chinese Factory Direct, customers gain both cost efficiency and strict process control. Every batch is traceable, and the heat treatment parameters are digitally monitored to ensure consistency. Whether exposed to sour gas, seawater, or high‑temperature steam, the bolt maintains dimensional stability and clamping force over extended service life. Its combination of high strength, ductility, and corrosion resistance makes it a preferred choice for petrochemical, nuclear, and aerospace fastening applications.
 
Why Choose This Bolt?
The NA16 Bolt stands out for its balanced mechanical properties and robust corrosion protection. The direct factory model eliminates intermediaries, allowing competitive pricing without compromising quality. With full customization support and short lead times, it offers a turnkey solution for demanding projects. For engineers seeking a fastener that performs reliably above 500°C and resists chloride‑induced stress corrosion, this product delivers proven results.
 
FAQ
Q1: What is the maximum operating temperature for the NA16 Bolt?
A: Up to 550°C continuously, with intermittent exposure slightly higher.
 
Q2: Can the NA16 Bolt be customized in length or coating?
A: Yes, full customization is available—length, thread, and surface finishes upon request.
 
Q3: Is the NA16 Bolt suitable for offshore environments?
A: Absolutely. Incoloy 825 offers excellent resistance to seawater and chloride attack.
 
Q4: How is the hardness of 200 HB verified?
A: Each batch is tested per ASTM E10 using a Brinell hardness tester.
 
Q5: What certifications accompany the NA16 Bolt?
A: Material test reports, heat treatment charts, and dimensional inspection reports are provided.
 
Q6: Does the direct factory price include packaging for export?
A: Yes, standard wooden cases or pallets are included; special packaging is available on request.

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