石油化工

封頭

      聯宏機械是一家專業成熟的石油化工、壓力容器的封頭生產、制造和銷售的公司

      聯宏機械多年專注于壓力容器封頭行業，生產銷售各種規格型號封頭，可加工規格最小從76*2到最大直徑10000*56的封頭

 

      我們的客戶遍布多個行業，產品廣泛應用于石油化工設備、制藥設備、食品加工設備、物流倉儲設備、精細化工設備、水處理設備、環保設備、工業鍋爐及壓力容器設備等

 

      我們提供各種規格型號的封頭產品：國標的橢圓形封頭（EHA）、碟形封頭、球冠形封頭、平底形封頭、錐體封頭、半球形封頭和球殼板；非標的定制封頭、錐形過渡節、沖孔封頭、弓形封頭、淺碟封頭和特大形封頭；

      我們依據海外他國標準，制造生產多種外國標準封頭：Torispherical head or bottom, Klopper heads (DIN-28011), Korbbogen heads(DIN-28013), spherical caps, flat heads, Flanged only Head, dished heads for low pressure, spherical covers, diffusion heads, cone heads, Cones for Pressure Vessels, PRC heads(NFE 81-101), MRC heads (NFE 81-104), GRC heads(NFE 81-102), elliptical heads 1,9:1 (NFE 81-103), elliptical heads 2:1(ASME), hemispherical heads, Shallow Head, Inverted Dished heads and Inverted Cones...
 

      封頭制造及檢驗標準

      我們通過了ISO9001質量管理體系認證，根據中國特種設備制造許可要求執行并制定了完備的質保體系，從原材料采購、中間過程控制到最終成品檢驗發貨為止的每一步嚴格控制，確保每一步符合相應的標準制度，只為客戶提供高品質的產品。

      根據客戶要求定制各種材質、型號封頭，我們的工程師全程參與并提供技術支持，確保產品達到要求。

      同時根據要求提供封頭表面處理：酸洗鈍化、、坡口切割、拋光、噴砂、噴漆、防腐處理等

 

      我們產品制造標準：GB/T25198-2010壓力容器封頭；GB 150鋼制壓力容器；GB 12337鋼制球形儲罐；JB/T 4730承壓設備無損檢測；JB/T 4734鋁制焊接容器；JB/T 4745鈦制焊接容器；JB/T 4755銅制壓力容器；JB/T 4756鎳及鎳合金壓力容器等

      我們同時依據海外他國標準，制造生產多種標準封頭如下：

      We manufactures Heads according to PED 97/23 EC for pressure vessels. The stainless steel material is certificated according to Pressure Equipment Directive (97/23/EC).
The dished and flanged heads are manufactured with PED/ TüV standard plates aiming the production of pressure machines.

We proceed according to the following manufacturing laws: CODAP, ASME, ADM.

      We manufactures stainless steel tank heads, in order to avoid any pollution from other materials. This point represents another guarantee of quality for all our clients.

 

Referenced norms:
Dished heads are manufactured according to the following norms:
- NF E 81-100 December 1997 – Dished heads, designation, tolerances.

- German tolerances DIN28011 et DIN28013

 

We manufactures the following type of heads:

· PRC Small knuckle radius head N FE 81-101 or Shallow Head

· GRC Large knuckle radius head N FE 81-102 or Torispherical head DIN28011

· Elliptical head N FE 81-103 or Semi Ellipsoidal Head DIN28013

· MRC Medium knuckle radius head N FE 81-104

Edge machining and bevelling are made according to the N FE81-110.

MANUFACTURING CYCLE OF DISHED HEADS ACCORDING TO NFE 81 100

· Calculation of the disc’s diameter

· Disc cutting

· Disc welding, in case of disc in several parts

· Destructive or non-destructive controls (if requested in yourorder)

· Cap pressing process and control of the knuckle radius

· Knuckle radius forming and knuckle radius control

· Edge machining according to NFE 81 110

· Dished head control at the end of the manufacturing process

· Dished head pickling

· Dished head polishing (if requested in your order)

· Openings (if requested in your order)

· Final control before consignment.

 

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