| Customization: | Available |
|---|---|
| Standard: | ANSI, DIN, GB, JIS, GOST, BSW, ISO |
| Type: | Welding Flange |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
ASTM Standards:
ASME Standards:
Materials provided in accordance with this specification shall comply with the requirements of Specification A961 and the additional requirements specified in the purchase order. If failure to comply with A961/A961M. it means material note comply with ASTM A694. And if this specification is inconsistent with the specification A 961, this specification shall be primary followed.
| Material | Steel, Brass, Alloy, Copper,Carbon Steel |
| Application | Fastener, Auto and Motorcycle Accessory, Hardware Tool, Machinery Accessory, Aerospace/ Marine/Automotive/Medical Equipments |
| Pressure Rating: | Class 150-Class 2500 PN6-PN16 |
| Tolerance | +/-0.005~+/-0.01mm |
| Sample Production Time | Usually 5~10 Work Days |
The steel material under A694 shall adopt one of the following smelting processes: open furnace, electric furnace or oxygen top-blown converter. Moreover, steel should be completely deoxidized.
As agreed by the buyer and manufacturer, the material shall be carbon steel, high strength low alloy steel or alloy steel. Further more, manufacturer shall report the chemical composition of the used material. All the produced products shall be adapted to welded on the pipes of ASTM A53, ASTM A106, ASTM A381, API 5L or the fittings of MSS SP-75.
Forging materials include ingots or billets, billets, slabs or forged, rolled rods, and cut to the specified length according to the appropriate process.
Hot working shall be sufficient to develop a wrought structure throughout the part.
Flanges shall not be machined directly from plate nor from solid bar stock.
All forgings should be heat treated. The heat treatment of carbon steel and high-strength low-alloy steel should be normalized, normalized or tempered or quenched and tempered. The heat treatment of alloy steel is aging treatment with quenching and precipitation or aging treatment with quenching and precipitation.
Tempering temperature shall be at least 1000 ºF [540 ºC], precipitation heat treatment of alloy steel shall be in range from 1000 to 1225 ºF [540 ºC to 665 ºC].
| Equipment |
| 3-axis, 4-axis and full 5-axis processing equipment, CNC lathe, centering machine, turning and milling compound, wire cutting, EDM, grinding, etc |
| Processing |
| CNC machining, CNC Turning, CNC Milling, Welding, Laser Cutting, Bending, Spinning, Wire Cutting, Stamping, Electric Discharge Machining (EDM), Injection Molding |
| Our Advantages |
| 1)24 hours online service & Quickly Quote/Delivery. 2)100% QC quality inspection before delivery, and can provide quality inspection form. 3)10+ years of experience in the CNC machining area and have a senior design team to offer perfect modification suggestions |
| Quality Assurance |
| 100% Inspect Before Shipment, ISO9001:2015, ISO13485:2016, SGS, RoHs, TUV |
| Serface Treatment |
| Aluminum parts:Clear Anodized, Color Anodized, Sandblast Anodized, Chemical Film, Brushing, Polishing Stainless Steel parts:Polishing, Passivating, Sandblasting, Laser engraving, Electrophoresis black, Oxide black Steel parts:Zinc Plating, Oxide black, Nickel Plating, Chrome Plating, Carburized, Heat treatment Brass parts:Nickel Plating, chrome plating, Electrophoresis black, Oxide black, Powder coated |
The pressure-temperature rating is the maximum allowable working pressure (bar unit) of the material and grade used at the rated temperature (Celsius).
Whether flange joints are used at high or low temperatures, leakage due to external forces and moments generated by the connected piping or equipment should be considered. To prevent leakage, pipe flanges and flanged fittings should avoid the application of severe external loads and sharp thermal gradients.
Application at temperatures in the creep range will result in decreasing bolt loads as relaxation of flanges, bolts, and gaskets takes place. Flanged joints subjected to thermal gradients may likewise be subject to decreasing bolt loads. Decreased bolt loads diminish the capacity of the flanged joint to sustain loads effectively without leakage. At temperatures above 200°C (400°F) for Class 150 and above 400°C (750°F) for other class designations, flanged joints may develop leakage problems unless care is taken to avoid imposing severe external loads, severe thermal gradients, or both.
Some materials, especially some carbon steel materials, exhibit a significant decrease in ductility when used at low temperatures, and thus cannot withstand impact load, sudden stress changes, and high stress concentrations. Some regulations require an impact test even when the temperature is above -29 °C (−20°F).
No pressure test is required on the flange.
Flanged fitting should be tested for shell pressure.
Shell Pressure Test for Flanged Fittings
The shell pressure test for flanged fittings shall be at a pressure no less than 1.5 times the 38°C (100°F) pressure rating rounded off to the next higher 1 bar (25 psi) increment.
|
Flanged Fittings Size |
Duration, Sec |
|---|---|
|
NPS ≤ 2 |
60 |
|
2 1/2 ≤ NPS ≤ 8 |
120 |
|
NPS ≥ 10 |
180 |
){kind=link}