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NXF EN-GJS-500-7/65-45-12/FCD500/QT500-7 Diameter DN40-DN1200 High Pressure Ductile Iron Double-flanged Tapered Pipe
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Ductile Iron Double-flanged Tapered Pipe (DI DFT Pipe) is a concentric/reducing fitting made of ductile iron, with flanges at both ends and a tapered bore to connect pipes of different diameters, balancing high strength, leak-proof assembly, and smooth flow transition, widely used in water, wastewater, and industrial piping.Core Definition & DesignDefinition: A pipe fitting that transitions between two nominal diameters via a gradual taper (concentric or eccentric), with integral flanges at both ends for bolted connections; made of ductile iron (SG iron) for strength and ductility beyond gray iron.Key Design Features:Tapered Bore: Concentric (aligns centerlines, minimizes turbulence) or eccentric (avoids air pockets in gravity flow) to ensure smooth flow and pressure stability.Double Flanges: Integral cast or bolted-on flanges with standardized drilling (PN10/PN16/PN25) for direct bolting to pipes/valves/pumps; raised-face (RF), flat-face (FF)
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Ductile Iron QT500-7 Introduction
QT500-7 is a ferrite-pearlite matrix ductile iron (spheroidal graphite iron, SG iron), a widely used general-purpose grade defined by its core mechanical property benchmarks: a minimum tensile strength of 500 MPa and a minimum elongation of 7% at room temperature. Designated per GB/T 1348 (China), it aligns with international standards including ISO 1083 Grade 500-7, ASTM A536 Grade 500-7, and EN 1563 Grade GS-500-7. This grade balances medium strength, good ductility, excellent castability, and cost-effectiveness, making it the most versatile ductile iron grade for industrial castings with moderate load-bearing requirements and a need for plastic deformation resistance.It is the primary material for ductile iron pipe fittings (e.g., double-flanged tapered pipes, elbows, tees), general mechanical components, and automotive parts, bridging the performance gap between low-strength high-ductility ductile iron (e.g., QT400-18) and high-strength low-ductility ductile iron (e.g., QT600-3).
Ductile Iron Double-flanged Tapered Pipe Introduction
Ductile Iron Double-flanged Tapered Pipe (DI DFT Pipe) is a concentric/reducing fitting made of ductile iron, with flanges at both ends and a tapered bore to connect pipes of different diameters, balancing high strength, leak-proof assembly, and smooth flow transition, widely used in water, wastewater, and industrial piping.Core Definition & DesignDefinition: A pipe fitting that transitions between two nominal diameters via a gradual taper (concentric or eccentric), with integral flanges at both ends for bolted connections; made of ductile iron (SG iron) for strength and ductility beyond gray iron.Key Design Features:Tapered Bore: Concentric (aligns centerlines, minimizes turbulence) or eccentric (avoids air pockets in gravity flow) to ensure smooth flow and pressure stability.Double Flanges: Integral cast or bolted-on flanges with standardized drilling (PN10/PN16/PN25) for direct bolting to pipes/valves/pumps; raised-face (RF), flat-face (FF), or ring-type joint (RTJ) for sealing flexibility.Ductile Iron Matrix: Spherical graphite nodules in ferrite/pearlite matrix (grades 450-10, 500-7 per ISO 1083) for high tensile strength (450–500 MPa), elongation (7%–10%), and impact resistance.
Ductile Iron Double-flanged Tapered Pipe Drawing
Ductile Iron QT500-7 Chemical Composition And Mechanical Properties
Ductile Iron Double-flanged Tapered Pipe Product photos
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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 in 1980, 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 as follow: 1.We have our own factory, and we can control the cost by producing by ourselves. We have a great advantage in price and can give you the lowest price. 2. We can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality. 3. Our biggest advantage is 3S service. Small quantity, short time, special materials.
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,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
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