Maxell Steel & Alloys

ASTM A350 LF2 and LF3 are specifications for carbon and low-alloy steel forged flanges designed for low-temperature service requiring notch toughness testing. LF2 (carbon-manganese steel) is ideal for applications down to -46∘Cnegative 46 raised to the composed with power cap C−46∘𝐶 (-50∘Fnegative 50 raised to the composed with power cap F−50∘𝐹), while LF3 (3.5% nickel steel) is designed for cryogenic/subzero use down to -101∘Cnegative 101 raised to the composed with power cap C−101∘𝐶 (-150∘Fnegative 150 raised to the composed with power cap F−150∘𝐹). Both are commonly used in oil and gas, chemical processing, and marine projects. 

MPS Welded Flanges (often from Metalloy Piping Solutions) are durable, corrosion-resistant pipe connectors available in Mumbai, commonly used in industrial applications. These flanges, ranging from 0.5 to 48 inches, feature secure welded connections for high-pressure or, with slip-on types, low-pressure, easy-installation scenarios. They typically conform to ASTM, ANSI, and DIN standards. 

standardized by various industry codes, such as ASME B16.5 and ASME B16.47, and include parameters like nominal pipe size (NPS), outside diameter (OD), bolt circle diameter (BCD), and the number and size of bolt holes. These dimensions vary significantly based on the flange's class (pressure rating), pipe size, and type (e.g., Weld Neck, Slip-On, Blind). To find specific dimensions, you must consult the relevant standard and the supplier's product catalog, which lists details for each size and class combination.