Pressure Vessel Heads

Ellipsoidal Head, Hemispherical Head and Torispherical Head are three types of ASME Pressure Vessel Dished Heads.

ELLIPSOIDAL HEAD
This is also called a 2:1 elliptical head. The shape of this head is more economical, because the height of the head is just a quarter of the diameter. Its radius varies between the major and minor axis.

HEMISPHERICAL HEAD
A sphere is the ideal shape for a head, because the pressure in the vessel is divided equally across the surface of the head. The radius (R) of the head equals the radius of the cylindrical part of the vessel.

TORISPHERICAL HEAD
These heads have a dish with a fixed radius (CR), the size of which depends on the type of torispherical head. The transition between the cylinder and the dish is called the knuckle. The knuckle has a toroidal shape.

DISH HEAD
This is a torispherical head. The dish has a radius that equals the diameter of the cylinder it is attached to. The knuckle has a radius that equals a tenth of the diameter of the cylinder.

ELLIPSOIDAL HEAD
This is a torispherical head also named Semi ellipsoidal head. The radius of the dish is 90.45% of the diameter of the cylinder (ICR = 0.9045 x OD.). The radius of the knuckle is (IKR = 0.1729 x OD).

Materials & Type

Company Information
JiangSu LianHong mechanical equipment CO. LTD is settled in SuCheng economic development zone of SuQian JiangSu, China. With the registered capital of 100 Million Yuan. The company covers an area of 70,000 square meter and a construction area of 40,000 square meter, which is a professional and mature company specially in R&D. Manufacturing and sales of the head and pressure vessel.  The main products are heads, A2(Three) pressure vessels, A3(spherical tank) shell plate,LNG cryogenic storage tank and barrier explosion-proof skid mounted refueling device.

There are 135 employees and 33 engineering technicians, including 5 senior professional titles, 25 middle and senior workers technicians and 3 qualified project managers. The total power of the company's construction machinery and equipment is 8 million kilowatts, and the turnover value is 150 million yuan a year. Mainly from the production head and pressure vessel. And exported to the United States, Europe, the Middle East, South America etc more than ten countries and regions.

The German T shape spinning unit developed independently by the company can be employed to process heads of 10,000mm in diameter and 60mm in thickness. Being in the advanced level in China. The company has integrated leading enterprises that manufacture and sell the pressure vessels and heads in China. The company has been supporting the establishment of three technical groups.The main technology group such as ingredients, rolls, forging, molding, assembly, welding, heat treatment test and pressure test, blasting test, fatigue test. Technical support groups such as automatic control technology, information processing technology, warehousing and logistics technology and standardization of technology management and technology groups such as quality control, personnel training, technology and market of electronic commerce customer service.

Company certificate
The main customers are Petro China CO. LTD, China LiaoYang Petro chemical CO. LTD, JiLin chemical group, CIMC ETC.

Equipment Capacity

Transport

Our Service

If you are interested to send the RFQ to Lianhong. We want to know the following details.

Information necessary to order heads:
1.Quantity
2.Type of Head
3.Dimensional Information (O.D., I.D., Thk., S.F., etc.)
4.Material Specifications
5.Special Tolerances or Requirements
6.Bevel Requirements

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