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NXF UNS S32760 F55/S32760/1.4501 DN15-1200 SCH10-XXS Super Duplex F55 Stainless Steel Butt Welding Straight/Reducing Cross Tee
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Welded tees are pipe fittings used at pipe branches. For manufacturing welded tees using seamless pipes, the commonly used processes are hydraulic bulging and hot pressing.
Hydraulic Bulging: Hydraulic bulging of welded tees is a forming process that uses axial compensation of the metal material to bulge out the branch pipe. The process involves using a specialized hydraulic press, injecting liquid into a pipe blank with the same diameter as the welded tee. Two horizontal side cylinders of the hydraulic press move synchronously to compress the pipe blank. As the pipe blank is compressed, its volume decreases, and the pressure of the liquid inside increases. When the pressure reaches the level required for the branch pipe to bulge out, the metal material flows along the mold cavity under the combined action of the side cylinders and the liquid pressure inside the pipe blank, thus bulging out the branch pipe.
Hydraulic Bulging: Hydraulic bulging of welded tees is a forming process that uses axial compensation of the metal material to bulge out the branch pipe. The process involves using a specialized hydraulic press, injecting liquid into a pipe blank with the same diameter as the welded tee. Two horizontal side cylinders of the hydraulic press move synchronously to compress the pipe blank. As the pipe blank is compressed, its volume decreases, and the pressure of the liquid inside increases. When the pressure reaches the level required for the branch pipe to bulge out, the metal material flows along the mold cavity under the combined action of the side cylinders and the liquid pressure inside the pipe blank, thus bulging out the branch pipe.
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Product Description
F55 Introduction
Stainless steel grade F55 has excellent corrosion resistance to a wide range of areas, especially resistance to pitting and
crevice corrosion in seawater and other chloride containing environments, with critical pitting temperature that is more than 50°C(122°F). This material is known to also have high strength and extended lifecycle. It is 10% lighter than grade 316 steel, ideal for sub-zero 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.Cross Tee Introduction
Welded tees are pipe fittings used at pipe branches. For manufacturing welded tees using seamless pipes, the commonly used processes are hydraulic bulging and hot pressing.
a. Hydraulic Bulging: Hydraulic bulging of welded tees is a forming process that uses axial compensation of the metal material to bulge out the branch pipe. The process involves using a specialized hydraulic press, injecting liquid into a pipe blank with the same diameter as the welded tee. Two horizontal side cylinders of the hydraulic press move synchronously to compress the pipe blank. As the pipe blank is compressed, its volume decreases, and the pressure of the liquid inside increases. When the pressure reaches the level required for the branch pipe to bulge out, the metal material flows along the mold cavity under the combined action of the side cylinders and the liquid pressure inside the pipe blank, thus bulging out the branch pipe. The hydraulic bulging process for welded tees can be completed in one step, resulting in high production efficiency; the wall thickness of the main pipe and shoulder of the welded tee is increased. Because the hydraulic bulging process for seamless welded tees requires large tonnage equipment, it is currently mainly used in China for manufacturing standard wall thickness tees smaller than DN400. The applicable forming materials are low-carbon steel, low-alloy steel, and stainless steel with relatively low work hardening tendency, including some non-ferrous metals such as copper, aluminum, and titanium.
b. Hot Press Forming: Hot press forming of weld neck tees involves flattening a tube blank larger than the diameter of the weld neck tee to approximately the diameter of the tee, and opening a hole at the branch pipe section. The tube blank is heated, placed in a forming mold, and a punch for stretching the branch pipe is inserted inside the tube blank. Under pressure, the tube blank is radially compressed. During the radial compression process, the metal flows towards the branch pipe and forms the branch pipe under the stretching of the punch. The entire process is formed through the radial compression of the tube blank and the stretching of the branch pipe section. Unlike hydraulically bulged weld neck tees, the metal of the branch pipe in hot-pressed weld neck tees is compensated by the radial movement of the tube blank, hence it is also called a radial compensation process. Because the weld neck tees are formed by pressing after heating, the tonnage of the equipment required for material forming is reduced. Hot-pressed butt-welded tees have a wide range of material adaptability, suitable for low-carbon steel, alloy steel, and stainless steel; especially for large-diameter and thick-walled tees, this forming process is commonly used. 1. Classified by material: carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon-bonded asphalt, PPC, etc. 2. Classified by manufacturing method: top-forming, pressing, forging, casting, etc. 3. Classified by manufacturing standard: national standard, electrical standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc.
BUTT-WELDING Cross Tee DRAWING
S32760 Chemical Composition And Mechanical Properties
Cross TeeProcessing
1. Raw Material PreparationSelect qualified stainless steel billets (e.g., 304/316L) and conduct quality inspection (chemical composition, mechanical properties, surface defect check). 2. Cutting & Blank MakingCut the billet into specified sizes using CNC cutting machines; remove burrs and sharp edges via grinding. 3. HeatingHeat the blank to 1100-1250℃ in a medium-frequency induction furnace to ensure uniform temperature distribution. 4. Forging FormingUse a hydraulic forging press to shape the heated blank into the cross structure, ensuring consistent wall thickness and dimensional accuracy of four ports. 5. Heat TreatmentPerform solution annealing (1050-1100℃) followed by rapid cooling to eliminate internal stress, improve corrosion resistance, and restore mechanical properties. 6. MachiningPrecision machine the four welding ports (groove cutting, end face finishing) with CNC lathes to meet butt-weld dimensional requirements (e.g., ANSI/GB standards). 7. Surface TreatmentConduct pickling, passivation, or mechanical polishing to remove oxide scales, weld spatter, and impurities; achieve a smooth, corrosion-resistant surface. 8. Quality Inspection- Dimensional inspection: Verify outer diameter, wall thickness, port angle, and groove size with calipers, micrometers, and gauges.- Non-destructive testing (NDT): Perform ultrasonic testing (UT) for internal defects and penetrant testing (PT) for surface cracks.- Pressure testing: Conduct hydrostatic/pneumatic testing to ensure no leakage. 9. Marking & PackagingMark product information (material grade, size, batch number) via laser engraving; package with anti-rust film and cartons for storage and transportation.
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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
Phone
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