Recommend Products
Name: Fujian Monel 400 Double End Stud Material: Monel 400 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: Resistant to hydrofluoric acidQS Fastener: Monel 400 Double End Stud
Name: Inconel 625 Double End Stud Material: Inconel 625 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 625 Double End Stud
Name: Xiamen Inconel 600 High Strength Fastener Material: Inconel 600 Standard: ASME Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 High Strength Fastener
Name: Inconel 600 Stud Bolt Putian Material: Inconel 600 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 Stud Bolt
Quanzhou 660A Fastener
QS Fastener: Quanzhou 660A Fastener
Name: Quanzhou 660A Fastener
Standard: ANSI/ASTM, DIN
Material: A453 Gr 660A
Size: M6 to M100
Product Grade: A
Length: 30 to 1000 mm
Tensile Strength(Rm): 895 N/mm²
Elongation: 25%
Feature: High Strength, Corrosion Resistance
Application: For Oil Pipeline Flange
Standard: ANSI/ASTM, DIN
Material: A453 Gr 660A
Size: M6 to M100
Product Grade: A
Length: 30 to 1000 mm
Tensile Strength(Rm): 895 N/mm²
Elongation: 25%
Feature: High Strength, Corrosion Resistance
Application: For Oil Pipeline Flange
Delivery
EXW, FOB, FCA
minimum order
10 kilograms
Supply Ability
10000kilograms / Month
Country of Origin
China
Stock Time
15-30Day
Quantity
US $21.50 - US $33.00
/ kilograms
As a senior fastener engineer with extensive experience in high-temperature bolting, I present the Quanzhou 660A Fastener—a premium-grade product manufactured to ASTM A453 Grade 660A specifications. These fasteners are engineered for demanding flange connections in oil pipelines and high-temperature service applications where reliability is paramount.
Product Specifications and Technical Data
The Quanzhou 660A Fastener is available from M6 to M100 diameter, with lengths ranging from 30 to 1000 mm, covering a comprehensive spectrum of industrial bolting requirements. Manufactured in compliance with ANSI/ASTM and DIN standards, these fasteners deliver a minimum tensile strength of 895 N/mm² and elongation of 25%, ensuring robust mechanical performance in critical service conditions. The material—A453 Gr 660A—is a precipitation-hardening iron-based alloy (A-286/UNS S66286) specifically designed for bolting applications requiring expansion coefficients comparable to austenitic stainless steels.
The Quanzhou 660A Fastener is available from M6 to M100 diameter, with lengths ranging from 30 to 1000 mm, covering a comprehensive spectrum of industrial bolting requirements. Manufactured in compliance with ANSI/ASTM and DIN standards, these fasteners deliver a minimum tensile strength of 895 N/mm² and elongation of 25%, ensuring robust mechanical performance in critical service conditions. The material—A453 Gr 660A—is a precipitation-hardening iron-based alloy (A-286/UNS S66286) specifically designed for bolting applications requiring expansion coefficients comparable to austenitic stainless steels.
Quanzhou: A Legacy of Fastener Excellence
Quanzhou, Fujian, has established itself as a powerhouse in China's fastener manufacturing landscape. Since the 1980s, the region has produced automotive and engineering machinery fasteners—including tire bolts, nuts, and high-strength components—that have gained nationwide recognition. Today, Quanzhou's automotive and engineering machinery parts industry comprises over 1,000 enterprises employing more than 100,000 workers, with annual transaction volumes exceeding 20 billion RMB. This deep-rooted industrial heritage underpins the quality and reliability of the Quanzhou 660A Fastener.
Quanzhou, Fujian, has established itself as a powerhouse in China's fastener manufacturing landscape. Since the 1980s, the region has produced automotive and engineering machinery fasteners—including tire bolts, nuts, and high-strength components—that have gained nationwide recognition. Today, Quanzhou's automotive and engineering machinery parts industry comprises over 1,000 enterprises employing more than 100,000 workers, with annual transaction volumes exceeding 20 billion RMB. This deep-rooted industrial heritage underpins the quality and reliability of the Quanzhou 660A Fastener.
Quality Assurance: Raw Material Visual Inspection
To guarantee product integrity, all incoming materials undergo rigorous visual inspection using calibrated measuring tools such as calipers. Surface defects—particularly rust—are evaluated against stringent acceptance criteria:
To guarantee product integrity, all incoming materials undergo rigorous visual inspection using calibrated measuring tools such as calipers. Surface defects—particularly rust—are evaluated against stringent acceptance criteria:
Slight Rust: Rust area ≤5% of total surface—acceptable; minor reddish-brown spots do not compromise fastener performance.
Moderate Rust: Rust area 5–15%, penetration depth ≤0.1 mm—marginally acceptable; grinding and coating treatments are recommended to prevent further deterioration.
Severe Rust: Rust area >15% or penetration depth >0.1 mm—unacceptable; such defects may compromise structural integrity and require immediate rejection.
For high-safety applications such as aerospace or nuclear service, even 0.5% rust may be deemed unacceptable. All inspections follow applicable industry standards and customer-specific requirements.
Application and Performance
The Quanzhou 660A Fastener offers exceptional resistance to relaxation under thermal cycling—a critical advantage in oil pipeline flange connections where operating temperatures demand materials with thermal expansion characteristics matching austenitic stainless steel flanges. The combination of high strength, corrosion resistance, and reliable quality control makes this product the preferred choice for engineers seeking dependable bolting solutions.
The Quanzhou 660A Fastener offers exceptional resistance to relaxation under thermal cycling—a critical advantage in oil pipeline flange connections where operating temperatures demand materials with thermal expansion characteristics matching austenitic stainless steel flanges. The combination of high strength, corrosion resistance, and reliable quality control makes this product the preferred choice for engineers seeking dependable bolting solutions.
With Quanzhou's manufacturing expertise and rigorous quality assurance protocols, the 660A Fastener delivers proven performance in the most demanding industrial environments.
Send Message
