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What are the common head code name parameters?
Time：
Jul 07,2023
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Head refers to the element which is used to close the end of the vessel to isolate its internal and external medium, also known as end cap. According to the shape of the surface, it can be divided into several kinds such as spherical, oval, disk, crown, cone shell and flat cover, etc., among which spherical, oval, disk and crown heads are also collectively called convex heads. Then what is the code name of commonly used head?
1、Hemispherical head: Type code: HHA; Type parameter relationship: Di=2Ri DN=Di
2、Oval head:
(1) Oval head based on inner diameter: Type code: EHA; Type parameter relationship: Di/2(H-h)=2 DN=Di
(2) Oval head based on outside diameter: Type code: EHB; Type parameter relationship: Do/2(Ho-h)=2 DN=Do
3、Disc-shaped head:
(1) Disc-shaped head based on inner diameter: type code: THA; type parameter relationship: Ri=1.0Di ri=0.10Di DN=Di
(2) Disc-shaped head based on outer diameter: type code: THB; type parameter relationship: Ro=1.0Do ro=0.10Do DN=Do
4、Spherical crown-shaped head: Type code: SDH; Type parameter relationship: Ri=1.0Di DN=Do
5、Flat bottom shaped head: Type code: FHA; Type parameter relationship: ri≥3δn H=ri+h DN=Di
6、Conical head:
(1) Cone head with opening angle of 30: Type code: CHA(30); Relationship of type parameters: ri≥0.10Di and ri≥3δn a=30o DN expressed as Di/Dis
(2) Cone head with opening angle 45: Type code: CHA(45); Type parameter relationship: ri≥0.10Di and ri≥3δn a=45o DN is expressed as Di/Dis
(3) Cone head with opening angle 60: Type code: CHA(60); Type parameter relationship: ri≥0.10Di and ri≥3δn rs≥0.05Dis and rs≥3δn a=60o DN indicated by Di/Dis
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