WPL3 pipe cap, also known as flat bottom head, is divided into flat bottom perforated head, flat bottom tubesheet head, flanged flat head, and flat bottom head (flat head), which are commonly used in large pressure vessels and pressure pipelines
Flat bottom head materials
304, 304L, 321, 316, 316L, 310S, 00Cr18Ni5Mo3Si2 (UNS S31500) (3RE60), 630, 00Cr22Ni5Mo3N (UNS S31803/S32205) (SAF2205), 00Cr25Ni7Mo4N (UNS S32750) (SAF2507) 304, 1Cr13, 2Cr13, 3Cr13, 1Cr17Ni2, dual phase steel, and actual main steel
WPL3 pipe cap standards
Common standards: JB/T4746-2002, JB/T1619-2002, GB16749-1997
Inspection standards: JB/T4746-2002 JB4730-94
Shell materials: carbon steel, stainless steel, alloy steel
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