ASTM A240 TP904L 1.4539 AWWA C207 Steel Flange SOFF For Waterworks

What is AWWA standards C207?

The AWWA C207 is an American National Standard for steel pipe flanges for waterworks service. The AWWA is the abbreviation of “American Water Works Association”. The origin of AWWA C207 can be dated back to year 1942 when a paper proposing standards for slip-on steel-ring flanges for welding to steel water pipes.

This standard was necessary because the lowest pressure ratings for steel flanges at that time were those having cold-water pressure ratings of 275 psi (1896 KPa). The ratings are far higher than those ordinarily needed for water service (150 psi / 1034 KPa) primary pressure rating.

As a low pressure piping solution, AWWA Standard Flanges can be an effective cost saver over ANSI or ASME forged flanges. These flanges, designed for oil, steam, or chemical applications and their demand for high pressure, are typically more expensive and less necessary for low pressure piping.

Our Grade 904L SS Flanges stands up tremendously well to chlorides in the atmosphere for crevice corrosion andlow pitting. In addition to stress corrosion cracking, these Grade 904L Stainless Steel Flanges merges copper andmolybdenum content in the company of iron content for extremelyaugmented resistance to reducing acids such as sulphuric acid.

Made up from top quality of raw materials, these products comply with all industrial quality standards. With several sizes, lengths and dimensional specifications, these UNS N08904 Flangesare also customized as per customer requirements at market leading prices.

Chemical Composition of 904L

Mechanical Properties

Equivalent Material of TP904L Stainless Steel

Dimensional Tolerances

Inside diameter of flange: +1/16″ [1.6 mm], -0; Outside diameter of flange: ±1/8″ [3.2 mm]; Thickness of flange 18″ [450 mm] and smaller: +1/8″ [3.2 mm], -0; Thickness of flange 20″ [500 mm] and larger: +3/16″ [4.8 mm], -0; Bolt circle diameter: ±1/16″ [1.6 mm]; Bolt hole spacing: ±1/32 [0.79 mm].

Applications:

• Construction
• Bridges
• Petrochemical Industry
• Ship Building
• Engineering
• General Structural Purposes
• Offshore and Onshore Services
• Power Generation Industries
• Food Processing Industries
• Oil & Gas Industries
• Sugar Industries