| Customization: | Available |
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| Material: | Stainless Steel |
| Type: | Round Head |
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XIAMEN QISHINE
XIAMEN QISHINE IMP. & EXP. Co., Ltd., is a globally recognized and renowned pipeline product supplier specializing in the provision of a wide array of pipeline essentials, from fasteners to gaskets. 
We take pride in catering to a broad range of clientele across various industries and projects worldwide, with a strategic focus on Engineering, Procurement, and Construction (EPC) companies and pipeline construction projects.
We have more than ten years of pipeline product development & sales experience, so we have a wealth of relevant experience and problem solving ability.
The NC21FeDu bolt and nut are crafted from the high-grade NC21FeDu material, also known as Incoloy 825 or NiCr21Mo. These fasteners offer excellent corrosion resistance, making them ideal for a range of industrial applications. Manufactured in accordance with international standards such as DIN, BSW, ANSI and NF, these bolts and nuts guarantee optimum performance and reliability.
Similar brand
| GB/T | UNS | JIS | Trademark | W.Nr |
| NS142 | N08825 | NCF825 | Incoloy825 | 2.4858 |
With sizes ranging from M6 to M100 and lengths ranging from 30 to 1000 mm, these NC21FeDu bolts and nuts are highly versatile and adaptable to a variety of project requirements. Product grade A and class 8.8 accreditation guarantee the superior quality and durability of these fasteners. With a maximum hardness of 200 HB, these bolts and nuts provide the utmost safety and reliability.
Chemical composition of NC21FeDu Bolt and Nut
| alloy | % | Ni | Cr | Fe | C | Mn | Si | Cu | Mo | Al | Ti | P | S |
| Incoloy825 | Min | 38 | 19.5 | REM | 1.5 | 2.5 | 0.6 | ||||||
| Max | 46 | 23.5 | 0.05 | 1 | 0.5 | 3 | 3.5 | 0.2 | 1.2 | 0.03 | 0.03 |
The NC21FeDu bolt and nut stand out in the fastener market thanks to their noteworthy features. One such attribute is their excellent resistance to stress corrosion cracking. This ensures that these fasteners can withstand harsh operating conditions involving high levels of stress and corrosive elements. Industries operating in challenging environments where corrosion is a significant concern can rely on these fasteners to maintain structural integrity and safety.
Minimum mechanical properties of bolts at room temperature
| Condition | Rm N/mm² |
RP0.2 N/mm² |
A5 % |
Hardness HB |
| annealing conditions | 550 | 220 | 30 | Max. 200 |
These bolts and nuts are widely used in various industrial sectors. They are particularly well-suited to applications where the temperature does not exceed 550°C. The superior corrosion resistance of the NC21FeDu Bolt and Nut makes them ideal for industries such as oil and gas, chemical processing, petrochemicals, marine and power generation. These fasteners are commonly used in critical areas such as pipelines, flanges, valves and other vital components that require exceptional strength and corrosion resistance.
The bolts and nuts are engineered using advanced manufacturing techniques and undergo stringent quality control measures. Each fastener is thoroughly tested to ensure dimensional accuracy, strength and corrosion resistance. Thanks to their reliable and robust design, these bolts and nuts have a long service life, reducing the need for frequent replacement and maintenance.
Designed to meet the expectations of customers and exceed industry requirements, these NC21FeDu bolts and nuts are manufactured to the highest standards of quality. Their reliability, durability and exceptional corrosion resistance make them an ideal choice for demanding industrial applications. You can trust these fasteners to deliver dependable performance and protect critical operations against premature failure.
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