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A lap joint flange separates sealing from clamping. The welded stub end seals; the loose ring clamps and rotates. Choose it when you need fast bolt alignment, frequent disassembly, or a costly wetted alloy with a low-cost bolting ring. Avoid it in severe cyclic, high-vibration, or high-bending-load service, where a weld neck flange is the safer choice.

This 2026 guide covers ASME B16.5 dimensions and weights (Class 150 to 2500), the main blind-flange types, how thickness is calculated, how to select the right material and class, and a comparison table to help you specify the correct blind flange.

A 195-piece 316L sanitary elbow order for a plant expansion in Cartagena, Chile - and the grade-selection logic that sits behind it.

Dimensions of Class 75 Series B Flanges

Schedule 80 Steel Pipe Strength This article analyzes the strength of schedule 80 steel pipe, including yield strength, compressive strength, and other properties. Understanding Schedule 80 Steel Pipe "Schedule 80" (Sch 80) is not a material grade; it is a dimension standard defined by ASME B36.10

ASME B16.47 is a standard for large steel pipe flanges developed by the American Society of Mechanical Engineers. Its full name is *Large Diameter Steel Flanges: NPS 26 through NPS 60, Metric/Inch Standard*. It specifically addresses large flanges with pipe diameters of NPS 26 to NPS 60 (DN 650 to DN 1500), specifying pressure-temperature ratings, materials, dimensions, tolerances, marking, and testing requirements.

Schedule 80 or 80S for stainless steel pipes feature thicker walls than Schedule 40 or lower schedules, making them suitable for high-pressure, high-temperature, and corrosive service. Dimensions follow ASME B36.10M and ASME B36.19M. Wall thicknesses are identical except for NPS 10 and NPS 12 in Sch

ASME B16.47 specifies the dimensions, tolerances, materials, marking, and pressure ratings for large-diameter pipe flanges in sizes NPS 26 (DN 650) through NPS 60 (DN 1500). This standard covers flanges with pressure classes 75, 150, 300, 400, 600, and 900.ASME B16.47 standard is limited to weld nec

ASME B16.5 is limited to pipe flanges and flanged fittings, blind flanges, reducing flanges, and related flange bolts, flange gaskets, and flange joints. It covers flanges of pressure classes 150, 300, 400, 600, 900, 1500, and 2500. Sizes are given in metric and U.S. customary units from NPS 1⁄2 to