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China Suppliers Factory ASME B16.5 Class 150 Raised Face Slip-on Pipe Flange for Low-Pressure Systems
Material Grade
Carbon Steel
ASTM A105 / A105N，ASTM A350 LF2 / LF3，ASTM A694 F42 / 46 / 56 / 60 / 65
Stainless Steel
ASTM A182 F304/304L/304H, 316/316L, 310S, 317,347,904L，ASTM A182 F51, F53, F44
Alloy Steel
ASTM A182 F11 / 12 / 5 / 9 / 91 / 92
Sealing Face
RF, FF, FTJ
Frequently Asked Questions
What are the common applications for ASTM A105 carbon steel?
ASTM A105 is the standard specification for forged carbon steel piping components. It is widely used for ambient- and higher-temperature service in pressure systems, including flanges, valves, and fittings.
What is the difference between ASTM A105 and ASTM A350 LF2?
While ASTM A105 is standard for high-temperature and ambient service, ASTM A350 LF2 is specifically designed for low-temperature service, offering superior notch toughness in cold environments.
When should ASTM A182 F51 or F53 duplex stainless steel be selected?
ASTM A182 F51 (Duplex) and F53 (Super Duplex) are selected for highly corrosive environments, particularly where high resistance to chloride stress corrosion cracking, pitting, and high mechanical strength are required.
What are the benefits of ASTM A182 alloy steel grades like F11 and F22?
Alloy steel grades such as F11 and F22 contain chromium and molybdenum, which provide excellent high-temperature strength and creep resistance, making them ideal for power generation and petrochemical applications.
What do RF, FF, and FTJ stand for regarding flange sealing faces?
RF stands for Raised Face, which concentrates sealing pressure. FF stands for Flat Face, used primarily with flat gaskets to prevent cracking on cast iron. FTJ (Flat Tongue Joint/Ring Joint variants) is designed for high-pressure, high-temperature metal-to-metal sealing.