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NXF UNS S32760 F55/S32760/1.4501 M3-M48 Length 4-360MM Gride4.9-12.9 Super Duplex F55 Stainless Steel S32760 Hex Head Bolts
2025-12-03 19:54 NXF-GROUP
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S32760 Introduction
Stainless steel grade F55 has excellent corrosion resistance to a wide range of areas, especially resistance to pitting andcrevice corrosion in seawater and other chloride containing environments, with critical pitting temperature that is more than50°C(122°F). This material is known to also have high strength and extended lifecycle. It is 10% lighter than grade 316steel,ideal for subzero service, and more cost effective than nickel alloys. Stainless steel grade F55 can be easily machined and welded. The following datasheet provides an overview of stainless steel grade F55.Hex Head Bolt Introduction
Hex head bolts are one of the most commonly used fasteners, mainly composed of a hexagonal head and a threaded shank . They are designed to be rotated by a wrench for tightening or loosening . Here is a detailed introduction: Classification - By Head Type: Divided into external hexagon bolts and internal hexagon screws. The former has a hexagonal head outside, while the latter has a hexagonal socket inside the head.- By Force - Bearing Mode: There are ordinary bolts and reamed - hole bolts. Reamed - hole bolts are used in applications subject to transverse forces and need to be matched with the size of the hole.- By Manufacturing Accuracy: Divided into grades A, B, and C. Grade A has the highest accuracy, and grade C has the lowest. Standards There are many relevant standards for hex head bolts. For example, the national standard GB/T 5782 - 2016 specifies the requirements for hex head bolts with thread specifications from M3 to M64, grades A and B. In addition, there are also international standards such as ISO 4018 and American standards ASME B18.2.1. Materials Commonly used materials include carbon steel (such as Q235 for 4.8 - grade bolts), alloy steel (such as 45# steel for 8.8 - grade bolts), and stainless steel (such as 304, 316). Applications Hex head bolts are widely used in various fields such as mechanical equipment, construction structures, the automotive industry, and electronic equipment due to their advantages of easy installation and disassembly, high torque - transmission capacity, and strong anti - rotation performance.
Hex Head Bolts Drawing
Specification
Processing
1. Raw Material Preparation: Select high-quality carbon steel (e.g., Q235, A105), stainless steel (e.g., 304, 316), or alloy steel plates that meet standards like GB/T 9119 or ASME B16.5. Conduct strict inspections on chemical composition, mechanical properties, and surface quality to ensure raw material qualification.
2. Cutting: Use plasma cutting, flame cutting, or CNC shearing machines to cut the raw material plates into circular blanks of specified sizes according to the flange's nominal diameter and thickness.
3. Heating: Heat the circular blanks in a furnace to 900-1100℃, ensuring uniform heating to improve metal plasticity and facilitate subsequent forming.
4. Forming: Adopt forging or stamping processes to shape the heated blanks into preliminary flange blanks (including the flange disc and short tube section). Forging enhances metal structure uniformity and mechanical strength, while stamping is suitable for mass production of small-caliber flanges.
5. Machining:- Use CNC lathes to precisely machine the flange's end face, outer diameter, and inner diameter of the short tube, ensuring dimensional accuracy.- Use CNC drilling machines to drill bolt holes on the flange disc, guaranteeing hole position accuracy and perpendicularity.- Finish-machine the sealing surface (e.g., RF, FF) to meet sealing performance requirements.
6. Welding (if needed): For flanges requiring reinforcement, perform fillet welding between the short tube and flange disc according to welding procedures. Conduct non-destructive testing (e.g., ultrasonic testing) to ensure welding quality.
7. Heat Treatment: Carry out annealing or normalizing processes to eliminate internal stresses generated during forging and machining, improving the flange's mechanical properties and dimensional stability.
8. Surface Treatment: Perform anti-corrosion treatments such as galvanizing, pickling, passivation, or painting based on application needs. Carbon steel flanges are often galvanized or painted, while stainless steel flanges undergo pickling and passivation.
9. Inspection: Conduct comprehensive quality inspections, including dimensional inspection (using calipers, micrometers), visual inspection (checking surface defects), mechanical property testing, and pressure testing (for pressure-containing flanges) to ensure compliance with standards.
10. Packaging and Storage: Pack qualified flanges with anti-rust materials and moisture-proof packaging. Store them in a dry, well-ventilated warehouse to prevent corrosion and mechanical damage.
Packing & Delivery
Company Profile
New XiFei (SuZhou) Business Co.,Ltd is one of the leading and most respected manufacturers in China. Our products include metals,machinery, containers, construction materials, mechanical products, electrical systems, and medical accessories. Established in1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolute customer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management and Craftsmanship."
Our advantage:3S Service(Small Quantity/Short Time/Special Material)
FAQ
1. who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern
Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central
America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4. why should you buy from us not from other suppliers?
Our advantage:3S Service (Small Quantity/Short Time/Special Material) We have our own factories, quality can be controlled
seriously. We Specialize in manufacturing about 21 years. We have professional testing department and testing equipment.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken:English,Chinese
6. Are you trading company or manufacturer ?
We are manufacturer.
7. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to
quantity.
8. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
9. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
We are manufacturer.
7. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to
quantity.
8. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
9. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
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