AWWA C207 steel flange
AWWA c207-07 steel flange refers to the standard of steel pipe flanges for water supply engineering in the United States. The form of flange has three kinds, ring, Hub, blind. Ring refers to flat flange, hub and with neck flat welding flange shape Similar, blind is the flange cover. Customer orders are generally custom-made ring, blind. The hub is rarely encountered.
Flange pressure is divided into class B, D, E, F is four kinds, fingering the blue pressure 86psi, 175-150psi, 275psi, 300psi. This flange has no sealing surface, belongs to FF full plane, flange surface is made concentric round thread waterline. The material used for flanges is generally A105. Specification from 4 ” -144″. is the United States standard flange standards inside the largest of a flange standard.
Material:
CARBON STEEL: A105
STAINLESS STEEL: 304, 304L, 316, 316L
ALLOY STEEL: A387
AWWA C207 Steel Flange Surface Anti-rust:
Anti-rust light oil,
Black paint coating,
Galvanized (Hot galvanized or Cold galvanized or Electro Galvanized)
AWWA C207 Steel Flange Surface Finish:
Stock finish
Spiral serrated
Two or three grooves (Water Lines)
Smooth finish
Basic procedure of forged AWWA C207 steel flange:
Forged flange forging in the free time, the shape of forgings through some basic deformation process will be the billet gradually forged, the basic process of free forging has upsetting, pulling long, punching, bending and cutting, the following is the forging flange of several processes.
1. The forging process that bends the billet into a certain angle or shape.
2. Cutting the blank or cut the material head of the forging process.
3. Upsetting is the original billet along the axial forging, so that its height reduction, cross section of the operation process, this process is often used for forging gear billet and other disc-type forgings, upsetting is divided into all upsetting and local forging coarse two.
4. The forging process that reverses the rotation of a part of the billet to a certain angle relative to the other part.
5. Drawing length is to make the length of the billet increased, section reduction of the forging process, is usually used to produce shaft-like pieces of blanks, such as lathe spindle, connecting rod and so on.
6. Punching the punch in the billet to flush out through holes or through the hole in the forging process.
Different from the carbon steel forging flange, the casting flanges have rough shape, accurate size, small processing capacity, low cost, but casting defects (pores), cracks (inclusions) castings of the internal structure is not good (if cutting, streamline worse). And the forging flange is usually more carbon-free than the cast flanges, they are less prone to rust, they streamline, relatively compact structure, casting flange mechanical properties Superior.
The improper forging process also leads to large or uneven grains, hardening and cracking, and the forging cost is higher than that of the casting flange. Forgings bear higher shearing force and tensile strength than castings, and the advantages of casting are that they can produce more complex shapes of flange manufacturers and lower cost.
Our company some type pipe flanges:
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| Stainless steel slip on flange | Blind flange | Weld neck flange | Plate flange | Threaded flange |
Some type steel flanges and different size:
carbon steel AWWA hub flange
carbon steel AWWA ring flange
140 inch steel AWWA flange
60 inch steel AWWA flange
