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    LAP-JOINT FLANGES

    LAP-JOINT FLANGES

    Lap Joint Flanges ASME B16.5 Manufacturers, Exporters & Suppliers in India.304/304L Lap Joint Flanges (SOLJ), 310/310S Lap Joint Flanges (SOLJ), 316/316L Lap Joint Flanges (SOLJ), 317/317L Lap Joint Flanges (SOLJ), 321/321H Lap Joint Flanges (SOLJ), 347/347H Lap Joint Flanges, 446 Lap Joint Flanges. Stainless Steel, Alloy Steel, Carbon Steel, Duplex steel, Copper Nickel Alloy, Hastelloy, Titanium, Alloy 20, Monel & Inconel Lap Joint Flanges.

    Pentagon Steel India stands as a premier manufacturer, supplier, and exporter of lap joint flanges (SOLJ) in India, offering a wide range of materials including stainless steel (304/304L, 310/310S, 316/316L, 317/317L, 321/321H, 347/347H, 446), alloy steel, carbon steel, duplex steel, copper nickel alloy, hastelloy, titanium, alloy 20, monel, and inconel.

    Lap Joint Flanges are specifically designed for use with stub ends or taft connections, where the flange itself is not welded to the pipe but instead floats freely over it. This design is ideal for systems that require frequent disassembly or maintenance. The flange is placed over the pipe and, when tightened against the stub end, provides a secure, leak-proof seal. Because the flange does not contact the conveyed fluid, it is highly suitable for applications involving corrosive environments or materials that might wear out other flange types.

    These flanges are highly versatile and are commonly used in industries such as petrochemicals, oil and gas, chemical processing, power generation, and more. They are especially valuable in systems where space is limited, as their design allows for easy alignment, reducing the effort and time required for installation and removal.

    By offering a broad selection of materials, Pentagon Steel India ensures that its lag joint flanges meet the diverse needs of global clients. Whether for high-pressure, high temperature, or corrosive conditions, these flanges deliver outstanding durability, reliability, and performance across a variety of applications.

    We are a manufacturer and exporter of stainless steel flanges, alloy steel flanges, carbon steel flanges, duplex steel flanges, monel flanges, and Inconel flanges.  

    Flanges made of stainless steel, alloy steel, carbon steel, duplex steel, monel, and inconel.ASTM / ASME - A 182 / 240, SA 182 / 240 Flanges,

    Material of Construction Standard Grades
    Stainless Steel Lap Joint Flanges ASTM A182 , A240 F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
    Carbon Steel Lap Joint Flanges ASTM A105 Gr. F42,46,52,56,60,65,70
    Alloy Steel
    Lap Joint Flanges
    ASTM A182 F1,F5,F9,F11,F22,F91
    Nickel Alloy
    Lap Joint Flanges
    ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
    Copper Alloys Lap Joint Flanges ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
    Low Temperature Carbon Steel Lap Joint Flanges ASTM A350 LF2 , LF3
    Duplex Steel Lap Joint Flanges ASTM A182, A240 UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

     

     
    Outside Diameter
    ≤ 24 = 1.6 mm | > 24 = ± 3.2 mm
    Inside Diameter
    ≤ 10 = ± 0.8 mm | ≥ 12 = + 1.6 mm / - 0 mm
    Diameter of Contact Face
    1.6 mm Raised Face = ± 0.8 mm
    6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm
    Outside Diameter of Hub
    ≤ 12 = + 2.4 mm / - 1.6 mm | ≥ 14 = ± 3.2 mm
    Diameter of Counterbore
    Same as for Inside Diameter
    Drilling
    Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm
    Eccentricity of Bolt Circle with Respect to Facing
    ≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
    Thickness
    ≤ 18 = + 3.2 mm / - 0 | ≥ 20 = + 4.8 mm / - 0
    Length thru Hub
    ≤ 18 = + 3.2 mm / - 0.8 mm | ≥ 20 = + 4.8 mm / - 1.6 mm

     

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    About Us

    Pentagon Steel India, India’s leading manufacturer, supplier, and exporter of flanges and pipe fittings. As an ISO-certified company, we produce pipeline flanges, fittings, customized fasteners, and fabricated items according to ASTM, EN, API, JIS, ISS, BSS, DIN, and custom standards.

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