According to the ASME B16.5 standard, steel flanges have 7 pressure classes: Class150 - 300 - 400 - 600 - 900 - 1500 - 2500. The pressure level of the flange is very clear. For example, a Class300 flange can withstand greater pressure than a Class150, because a Class300 flange needs to be made of more materials to withstand greater pressure. However, the pressure-bearing capacity of the flange is affected by many factors. The pressure rating of the flange is expressed in pounds, and a pressure rating has different expression methods. For example: 150Lb, 150Lbs, 150# and Class150 have the same meaning.
What does Class 150 flange mean?
As temperature increases, the pressure rating of the flange decreases. For example, a Class 150 flange is rated about 270 psi at ambient conditions (i.e. 100ºF or 38ºC), 180 psi at 400ºF (204ºC), 150 psi at 600ºF (316ºC), and 75 psi at 800ºF (427ºC).
ASTM ANSI B16.5 150LB Steel Pipe Slip Flange 1/2 to 24 Inch
| Product Name: | Slip On Flange |
| Material: | Carbon Steel Flange: 20#, Q235, A105, ST20, C22.8, Rst37.2 Stainless Steel Flange: F304 F304L F316 F316L 316Ti |
| Standard: | ASTM, ASME, JIS, DIN, GB, BS |
| Size: | 15A- 2000A, 1/2"-78" |
| Class: | Class150,Class300,Class400,Class600, Class900,Class1500,Class2500 |
ASTM A182 Slip On Flange
Gnee steel pipes are widely used in high, medium and low pressure fluid transportation pipelines such as oil, natural gas, water, steam, and gas, as well as structural steel pipes for piling, bridges, buildings, etc. We export to Southeast Asia, the Middle East, South America, Africa, North America, Europe, etc. 80 Multiple regions.
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