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NXF UNS S20910 XM-19 Diameter DN15-1200 Pressure 150-600lb Special Stainless Steel Forged Socket Welding Flanges
Socket welding flanges (SW flanges) are connection components mainly used in high-pressure, small-diameter (typically less than NPS 2) piping systems. Their most distinctive feature is a stepped socket inside the flange neck. After the pipe is inserted into the socket, an external fillet weld is performed on the flange neck.
magneticpermeability of this alloy allows it to be used as a material for medical implants.
Machinability
Stainless steel grade UNS S20910 XM-19 has machinability characteristics that are similar to other austenitic stainless
steels;however it requires slower speeds, more power, and higher rigidity due to its high work hardening rate. It is recommended that coated carbide tooling be used.
Forming
Stainless steel grade UNS S20910 XM-19 can be formed using the same methods applied for other austenitic stainless steels. More power for forming and forging is needed for this alloy. Forging can be done at 1177-1204°C (2150-2200°F).
Welding
Welding of stainless steel grade UNS S20910 XM-19 can be performed using traditional joining processes. Recommended filler metal should be UNS S20910 XM-19 (AWS E/ER209).
Caution should be taken while using autogenous, high power density joining processes such as EB or laser welding, due to low FN potential and severe outgassing possibility.
Heat Treatment
Final annealing process performed for several of the applications, is done at 1065°C (1950°F), which is followed by water
quenching. In case this material is used in a strongly corrosive environment, annealing should be done at 1121°C (2050°F). This alloy cannot be hardened by heat treatment.
Product processing
1. Raw Material Preparation and CuttingMaterial Selection: Select carbon steel (e.g., A105), stainless steel (e.g., A182, F304/F316), or alloy steel according to requirements.Cutting: Use a saw, plasma cutter, or laser cutter to cut the steel billet into cylindrical segments of the predetermined weight.
2. Pre-Forging HeatingThe segments are placed in a heating furnace and heated to the forging temperature (usually between 1000°C and 1300°C, depending on the material) to increase the metal's plasticity.
3. Die Forging (Core Step)Die Forging: The heated metal is placed into a pre-made die, and a press or forging hammer is used to apply enormous pressure, causing it to fill the die cavity and form the rough outline of the flange.Drilling and Trimming: A central through hole is punched out and excess flash is removed.
4. Heat TreatmentNormalizing/Annealing: Eliminates internal stresses generated during forging and refines the grain size. Carbon steel typically requires normalizing (A105N) to improve low-temperature impact toughness.Quenching/Tempering: For alloy steel, quenching increases hardness, followed by tempering to balance toughness.
5. Machining (CNC)This is the most critical step determining the function of the socket flange, mainly including:Fine machining of the sealing surface: Machining the sealing grooves of the raised face (RF) or ring joint face (RTJ).Machining the socket: Precisely cutting the socket depth and diameter for insertion into the pipe. The socket diameter is typically 0.25mm larger than the pipe's outer diameter to ensure a proper weld fit.Drilling: Using a CNC drilling machine, precisely drill bolt holes according to standards (such as ASME B16.5).
6. Surface Treatment and CleaningPickling: Removing surface oxide scale.Corrosion Protection: Carbon steel flanges are typically oiled, painted, or galvanized for rust prevention.
7. Inspection and PackagingDimensional Inspection: Use calipers to verify the socket depth, outer diameter, thickness, etc.Non-Destructive Testing (NDT): Use ultrasonic or magnetic particle testing to check for internal cracks or porosity.Marking and Warehousing: Mark the pressure rating, material, dimensions, and furnace number on the outside of the flange with steel stamps.
2. We can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality.Such as PMI testing
3. Our biggest advantage is 3S service. Small quantity, short time, special materials.
4.We have excellent quality certificate system and trademark certificate
5.We have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.We have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
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.Such as PMI testing
3. Our biggest advantage is 3S service. Small quantity, short time, special materials.
4.We have excellent quality certificate system and trademark certificate
5.We have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.We have a well-established logistics support system that can save you both time and money, providing you with a one-stop service..
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;
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