ASTM A234 WP22 CL1 / CL3 Alloy Steel Fitting Buttweld 180° Elbow Black Painted
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ASME B16.9 Buttweld ASTM A234 WP22 CL1 / CL3 180 Degree Elbow Alloy Steel Pipe Fittings
WP22 is the designation used to describe the grade of buttweld fittings, it corresponds to the material grade and is part of the ASTM A234 specification for alloy steel fittings. These fittings are available in a range of sizes, and their specifications will generally reference standard dimensions like ANSI/ASME B16.9 for butt-weld fittings. They are classified into different classes based on their minimum yield strength and design applications. The classifications typically refer to the manufacturing process or the intended service conditions of the fittings. Usually, fittings belonging to class 1 and 3 are first liquid quenching followed by the performance of a tempering process.
ASTM A234 WP22 Alloy Steel Buttweld Pipe Fittings Chemical Requirements
ASTM A234 WP22 Alloy Steel Buttweld Pipe Fittings Specification
Other Materials
Note: Fittings of Grades WP1, WP11 Class 1, WP11 Class 2, WP11 Class 3, WP12 Class 1, WP12 Class 2, WP22 Class 1, WP22 Class 3, WP5, and WP9 shall be furnished in the annealed, isothermal-annealed, or normalized and tempered condition. If normalized and tempered, the tempering temperature
for WP11 Class 1, WP11 Class 2, WP11 Class 3, WP12 Class 1, and WP12 Class 2 shall not be less than 1150 °F [620°C];
for Grades WP5, WP9, WP22 Class 1, and WP22 Class 3 the tempering
temperature shall not be less than 1250 °F [675°C].
Applications
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