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    25 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.

    Low-Pressure Iron and Steel Unthreaded Pipe Flanges

    Bolt two flat-surface flanges or two raised-surface flanges of the same size together with a gasket (sold separately) to create an access point in a pipe line. Flanges are for use with low-pressure applications in noncorrosive environments.
    Flanges
    Image of Product. Slip-On Weld: Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Slip-On Weld Female, Raised Surface.
    Image of Product. Slip-On Weld: Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Slip-On Weld Female, Raised Surface.

    Slip-On

    Weld:

    Front

    Slip-On

    Weld:

    Raised

    Surface

    on Back

    Slip-on-Weld Fitting Connection—Slip-on weld flanges have no internal stop; slide a pipe through the flange and weld on both sides.
    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
    Slip-On Weld Female
    1/2
    		1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K398000000
    3/4
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34400000
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34500000
    1
    		1
    		Raised4 59/64"5/8"0.748"43 35/64"—Steel
    		Not RatedNot Rated1752N1400000
    1
    		1
    		Raised115 mm12 mm14 mm485 mm—Steel
    		230 psi @ 72° F180 psi @ 300° F1132T1900000
    1 1/4
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34600000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34700000
    1 1/2
    		1 1/2
    		Raised5 33/64"5/8"0.748"44 9/64"—Steel
    		Not RatedNot Rated1752N1500000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34800000
    2
    		2
    		Raised6 7/64"5/8"0.748"44 23/32"—Steel
    		Not RatedNot Rated1752N1600000
    2
    		2
    		Raised165 mm16 mm18 mm4125 mm—Steel
    		230 psi @ 72° F180 psi @ 300° F1132T2100000
    2 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34900000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35100000
    3
    		3
    		Raised200 mm16 mm18 mm8160 mm—Steel
    		230 psi @ 72° F180 psi @ 300° F1132T2200000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35200000
    4
    		4
    		Raised220 mm16 mm18 mm8180 mm—Steel
    		230 psi @ 72° F180 psi @ 300° F1132T2300000
    5
    		5
    		Raised10"3/4"7/8"88 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K39600000
    6
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35300000
    8
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K397000000
    10
    		10
    		Raised16"7/8"1"1214 1/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K53000000
    12
    		12
    		Raised19"7/8"1"1217"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K54000000
     
    Reducing Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Reducing Flanges, Slip-On Weld Female, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Reducing Flanges, Slip-On Weld Female, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Reducing flanges allow you to transition your system to a smaller pipe size; attach to a flange with a larger pipe size but with the same flange dimensions.
    Slip-on-Weld Fitting Connection—Slip-on weld flanges have no internal stop; slide a pipe through the flange and weld on both sides.
    Bolt
    Hole
    Pipe Size
    (A)
    For Flange
    Pipe Size (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
    Slip-On Weld Female
    3/4
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K187000000
    1
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K18800000
    1
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K18900000
    2
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K191000000
     
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