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    24 Products
    About Pipe and Fittings
    industrial info icon

    Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

    High-Pressure Iron and Steel Threaded Pipe Flanges

    With better strength than our low-pressure steel flanges, these are for use in high-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges are also known as Pressure Class 300 or Pressure Class 600 flanges. Use in noncorrosive environments.
    Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Flanges, Flanges, Flanged Fitting Connection, Female, Threaded Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Flanges, Flanges, Flanged Fitting Connection, Female, Threaded Fitting Connection, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/2
    		1/2
    		Raised3 3/4"1/2"5/8"42 5/8"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K226000000
    3/4
    		3/4
    		Raised4 5/8"5/8"3/4"43 1/4"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K12100000
    1
    		1
    		Raised4 7/8"5/8"3/4"43 1/2"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K12200000
    1
    		1
    		Raised4 7/8"3/4"3/4"43 1/2"600
    		Steel1,400 psi @ 72° F1,300 psi @ 300° F6806K42200000
    1 1/4
    		1 1/4
    		Raised5 1/4"5/8"3/4"43 7/8"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K12300000
    1 1/2
    		1 1/2
    		Raised6 1/8"3/4"7/8"44 1/2"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K12400000
    1 1/2
    		1 1/2
    		Raised6 1/8"7/8"0.88"44 1/2"600
    		Steel1,400 psi @ 72° F1,300 psi @ 300° F6806K42300000
    2
    		2
    		Raised6 1/2"5/8"3/4"85"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K12500000
    2
    		2
    		Raised6 1/2"3/4"3/4"85"600
    		Steel1,400 psi @ 72° F1,300 psi @ 300° F6806K42400000
    2 1/2
    		2 1/2
    		Raised7 1/2"3/4"7/8"85 7/8"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K12600000
    3
    		3
    		Raised8 1/4"3/4"7/8"86 5/8"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K12700000
    3
    		3
    		Raised8 1/4"7/8"0.88"86.62"600
    		Steel1,400 psi @ 72° F1,300 psi @ 300° F6806K425000000
    4
    		4
    		Raised10"3/4"7/8"87 7/8"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K12800000
    4
    		4
    		Raised10 3/4"1"1"88 1/2"600
    		Steel1,400 psi @ 72° F1,300 psi @ 300° F6806K426000000
    5
    		5
    		Raised11"3/4"7/8"89 1/4"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K222000000
    6
    		6
    		Raised12 1/2"3/4"7/8"1210 5/8"300
    		Steel600 psi @ 72° F300 psi @ 300° F6806K129000000
    6
    		6
    		Raised14"1 1/8"1.12"1211 1/2"600
    		Steel1,400 psi @ 72° F1,300 psi @ 300° F6806K427000000
     

    High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

    A galvanized finish gives these flanges fair corrosion resistance. Also known as Pressure Class 300 flanges, they can withstand medium-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line.
    Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Flanged Fitting Connection, Female, Threaded Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Flanged Fitting Connection, Female, Threaded Fitting Connection, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam
    Pressure @ Temp.
    Each
    NPT Female
    3/4
    		3/4
    		Raised4 5/8"3/4"3/4"43 1/4"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N120000000
    1
    		1
    		Raised4 7/8"3/4"3/4"43 1/2"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N1300000
    1 1/4
    		1 1/4
    		Raised5 1/4"3/4"3/4"43 7/8"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N14000000
    1 1/2
    		1 1/2
    		Raised6 1/8"7/8"0.88"44 1/2"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N1500000
    2
    		2
    		Raised6 1/2"3/4"3/4"85"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N16000000
    3
    		3
    		Raised8 1/4"7/8"0.88"86 5/8"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N17000000
    4
    		4
    		Raised10"7/8"0.88"87 7/8"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N18000000
     
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