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    80 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.

    Medium-Pressure Stainless Steel Butt-Weld Pipe Fittings

    Also known as Schedule 40 fittings, these have thicker walls than our thin-wall stainless steel unthreaded butt-weld fittings. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
    Caps
    Image of Product. Butt Weld. Front orientation. Pipe and Fittings. Medium-Pressure Stainless Steel Butt-Weld Pipe Fittings, Caps, Butt Weld.

    Butt Weld

    304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    316/316L Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
    304/304L
    Stainless Steel
    316/316L
    Stainless Steel
    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Each
    Each
    Butt Weld
    1/2
    		Welded27/32"40
    		45605K58100000045555K581000000
    3/4
    		Welded1 3/64"40
    		45605K5820000045555K58200000
    1
    		Welded1 5/16"40
    		45605K5830000045555K58300000
    1 1/4
    		Welded1 21/32"40
    		45605K5840000045555K58400000
    1 1/2
    		Welded1 29/32"40
    		45605K5850000045555K58500000
    2
    		Welded2 3/8"40
    		45605K5860000045555K58600000
    2 1/2
    		Welded2 7/8"40
    		45605K5870000045555K58700000
    3
    		Welded3 1/2"40
    		45605K5910000045555K59100000
    4
    		Welded4 1/2"40
    		45605K5930000045555K59300000
    6
    		Welded6 5/8"40
    		45605K5950000045555K595000000
    8
    		Welded8 5/8"40
    		45605K52900000045555K614000000
     
    Stub-End Straight Adapters
    Image of Product. Straight Adapter. Front orientation. Pipe Stub Ends. Medium-Pressure Stainless Steel Butt-Weld Pipe Fittings.

    Straight Adapter

    Stub-end straight adapters are used with flanges. Slide a flange onto the stub end and weld the stub end to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily, which creates an access point for frequent cleaning and inspecting.
    316/316L
    Stainless Steel
    Pipe
    Size
    Wall
    Thk.
    Flange
    OD
    Construction
    Pipe
    Schedule
    Each
    1/2
    		0.109"1 3/8"Welded40
    		45555K651000000
    3/4
    		0.113"1 11/16"Welded40
    		45555K65200000
    1
    		0.133"2"Welded40
    		45555K65300000
    1 1/4
    		0.14"2 1/2"Welded40
    		45555K65400000
    1 1/2
    		0.145"2 7/8"Welded40
    		45555K65500000
    2
    		0.154"3 5/8"Welded40
    		45555K65600000
    2 1/2
    		0.203"4 1/8"Welded40
    		45555K65700000
    3
    		0.216"5"Welded40
    		45555K66100000
    4
    		0.237"6 3/16"Welded40
    		45555K66300000
    6
    		0.28"8 1/2"Welded40
    		45555K665000000
    8
    		0.322"10 5/8"Welded40
    		45555K615000000

    Low-Pressure Stainless Steel Butt-Weld Pipe Fittings

    Also known as Schedule 10 fittings, these are thin and lightweight. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
    Caps
    Image of Product. Front orientation. Pipe and Fittings. Low-Pressure Stainless Steel Butt-Weld Pipe Fittings, Caps, Butt Weld.

    Butt Weld

    304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    316/316L Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
    304/304L
    Stainless Steel
    316/316L
    Stainless Steel
    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Each
    Each
    Butt Weld
    1/2
    		Welded27/32"10
    		45735K27100000043645K371000000
    3/4
    		Welded1 3/64"10
    		45735K2720000043645K37200000
    1
    		Welded1 5/16"10
    		45735K2730000043645K37300000
    1 1/4
    		Welded1 21/32"10
    		45735K2770000043645K14700000
    1 1/2
    		Welded1 29/32"10
    		45735K2750000043645K37500000
    2
    		Welded2 3/8"10
    		45735K2760000043645K37600000
    2 1/2
    		Welded2 7/8"10
    		45735K2810000043645K14800000
    3
    		Welded3 1/2"10
    		45735K2780000043645K37800000
    4
    		Welded4 1/2"10
    		45735K2790000043645K37900000
    6
    		Welded6 5/8"10
    		45735K2820000043645K14900000
    8
    		Welded8 5/8"10
    		45735K11500000043645K151000000
    10
    		Welded10 3/4"10
    		45735K61900000043645K458000000
    12
    		Welded12 3/4"10
    		45735K62100000043645K459000000
     
    Stub-End Straight Adapters
    Image of Product. Straight Adapter. Front orientation. Pipe Stub Ends. Low-Pressure Stainless Steel Butt-Weld Pipe Fittings.

    Straight Adapter

    Stub-end straight adapters are used with flanges. Slide a flange onto the stub end and weld the stub end to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily, which creates an access point for frequent cleaning and inspecting.
    304/304L
    Stainless Steel
    316/316L
    Stainless Steel
    Pipe
    Size
    Wall
    Thk.
    Flange
    OD
    Construction
    Pipe
    Schedule
    Each
    Each
    1/2
    		0.083"1 3/8"Welded10
    		———043645K391000000
    3/4
    		0.083"1 11/16"Welded10
    		———043645K39200000
    1
    		0.109"2"Welded10
    		———043645K39300000
    1 1/4
    		0.109"2 1/2"Welded10
    		———043645K15200000
    1 1/2
    		0.109"2 7/8"Welded10
    		———043645K39500000
    2
    		0.109"3 5/8"Welded10
    		———043645K39600000
    2 1/2
    		0.12"4 1/8"Welded10
    		———043645K15300000
    3
    		0.12"5"Welded10
    		———043645K39800000
    4
    		0.12"6 3/16"Welded10
    		———043645K39900000
    6
    		0.134"8 1/2"Welded10
    		———043645K154000000
    8
    		0.148"10 5/8"Welded10
    		———043645K155000000
    10
    		0.134"12 3/4"Welded10
    		45735K6220000000———0
    12
    		—15"Welded10
    		———043645K462000000

    High-Pressure Stainless Steel Butt-Weld Pipe Fittings

    With a thicker wall than our standard-wall butt-weld pipe fittings, these offer high strength while providing a smooth connection for maximum flow. They have beveled ends that, when flush to pipe, create a trough for a leak-resistant, permanent weld.
    Caps
    Image of Product. Front orientation. Pipe and Fittings. High-Pressure Stainless Steel Butt-Weld Pipe Fittings, Caps, Butt Weld.

    Butt Weld

    304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    316/316L Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
    304/304L
    Stainless Steel
    316/316L
    Stainless Steel
    Pipe
    Size
    Construction
    OD
    Pipe
    Schedule
    Max. Pressure
    @ Temp.
    Max. Steam
    Pressure @ Temp.
    Each
    Each
    Butt Weld
    1
    		Seamless1 5/16"80
    		Not RatedNot Rated1739K2400000001741K240000000
    1 1/2
    		Seamless1 29/32"80
    		Not RatedNot Rated1739K250000001741K25000000
    2
    		Seamless2 3/8"80
    		Not RatedNot Rated1739K260000001741K26000000
    3
    		Seamless3 1/2"80
    		Not RatedNot Rated1739K270000001741K27000000
     
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