Kelengkapan paip
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ASTM A234 WPB & WPC Fittings termasuk siku, tee, reducers
This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction. Kelengkapan ini digunakan dalam paip tekanan dan fabrikasi kapal tekanan untuk perkhidmatan pada suhu sederhana dan tinggi. The material for fittings shall consist of killed steel, forgings, bars, plates, seamless or fusion-welded tubular products with filler metal added. Forging or shaping operations may be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. Prosedur pembentukan hendaklah diterapkan sehingga ia tidak akan menghasilkan ketidaksempurnaan yang membahayakan dalam kelengkapan. Fittings, after forming at an elevated temperature, shall be cooled to a temperature below the critical range under suitable conditions to prevent injurious defects caused by too rapid cooling, but in no case more rapidly than the cooling rate in still air. Kelengkapan hendaklah tertakluk kepada ujian ketegangan, ujian kekerasan, dan ujian hidrostatik.