| 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 specially crafted using the high-grade material NC21FeDu, also known as Incoloy 825 or NiCr21Mo. These fasteners exhibit exceptional resistance to corrosion, making them highly suitable for various industrial applications. Manufactured in adherence to international standards such as DIN, BSW, ANSI, NF, these bolts and nuts ensure optimum performance and reliability.
Similar brand
| GB/T | UNS | JIS | Trademark | W.Nr |
| NS142 | N08825 | NCF825 | Incoloy825 | 2.4858 |
With a size range from M6 to M100 and a length from 30 to 1000 mm, these NC21FeDu bolts and nuts offer versatility and adaptability to different project requirements. The product grade A and class 8.8 accreditation guarantee the superior quality and durability of these fasteners. Boasting a maximum hardness of 200 HB, these bolts and nuts excel in providing 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 exhibit noteworthy features, making them stand out in the fastener market. One key attribute is their excellent resistance to stress corrosion cracking. This quality ensures that these fasteners can withstand harsh operating conditions with high levels of stress and corrosive elements. Industries that operate 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 find extensive use in various industrial sectors. They are particularly suitable for applications where the temperature does not exceed 550 degrees Celsius. Industries such as oil and gas, chemical processing, petrochemical, marine, and power generation can benefit from the superior corrosion resistance of the NC21FeDu Bolt and Nut. These fasteners are commonly employed in critical areas such as pipelines, flanges, valves, and other crucial components that require exceptional strength and resistance to corrosion.
The NC21FeDu Bolt and Nut are engineered using advanced manufacturing techniques and undergo stringent quality control measures. Each fastener undergoes thorough testing to ensure dimensional accuracy, strength, and resistance to corrosion. With a reliable and robust design, these bolts and nuts offer a long service life, reducing the need for frequent replacements and maintenance.
With an emphasis on high standards and quality, these NC21FeDu bolts and nuts are designed to meet the expectations of customers and exceed industry requirements. Their reliability, durability, and exceptional corrosion resistance make them an ideal choice for demanding industrial applications. Trust in these fasteners to provide dependable performance and safeguard critical operations against premature failure.
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