Carbon Steel Forged Flanges Flange Cover

The formal name of blind disk is called flange cover, and some are also called blind flange or pipe plug. It is a flange without a hole in the middle, which is used to block the pipe opening. The function is the same as that of the head and pipe cap, except that the blind seal is a removable sealing device, and the seal of the head is not ready to be opened again. There are many types of sealing surfaces, including plane, convex, concave convex, tenon and groove surface and ring connecting surface. Materials include carbon steel, stainless steel, alloy steel, copper, aluminum, PVC and PPR.

The blind plate is mainly used to completely isolate the production medium and prevent the production from being affected or even accidents due to the lax closing of the shut-off Valve . The blind plate shall be set at the position requiring isolation, such as the nozzle of the equipment, the front and rear of the shut-off valve or between two flanges. It is often recommended to use the spectacle blind plate; For pressing, purging and other disposable parts, insert plates (circular blind plates) can also be used.

Blind plate and insert ring are generally divided into flat plate and insert ring (from the appearance of blind plate and insert ring). The blind plate plays the role of isolation and cutting, which is the same as that of head, pipe cap and welding plug. Due to its good sealing performance, it is generally used as a reliable isolation means for systems that need complete isolation. The plate blind is a solid circle with a handle, which is used for the system in the isolated state under normal conditions. The figure 8 blind plate is shaped like figure 8. One end is a blind plate and the other end is a throttling ring, but the diameter is the same as the pipe diameter of the pipeline and does not play the role of throttling. The spectacle blind plate is easy to use. When isolation is required, the blind plate end shall be used. When normal operation is required, the throttling ring end shall be used. At the same time, it can also be used to fill the installation gap of the blind plate on the pipeline. Another feature is that the identification is obvious and it is easy to identify the installation state.

Flanges include: forged steel flanges of carbon steel, alloy steel, low-temperature steel, stainless steel, dual phase steel and nickel base alloy, steel forgings for various boilers and Pressure Vessels, as well as various machinery and ship forgings.

Flange plates include plate flat welding flange, butt welding flange, neck flat welding flange, neck butt welding flange, loose sleeve flange, large mechanical flange, pressure vessel flange, socket flange, screw flange, flange cover, spectacle blind plate, pipe plate, plug, manhole, wind power flange, pipe flange and CNC precision flange.

Our partners specialize in flanges including the standards - ANSI; DIN; BS; UNI; JIS; SABS1000/3, also the custom design. It owns forging and casting factory which is well-equipped, and has a severe system for the quality control, which covers every process of the manufacturing ( raw material inspection, cutting, heating, gorging, heat treatment, machining, drilling, marking, washing, final inspection, packing, delivery).

We can provide the flanges(Forged Flange,Carbon Steel Flange, Weld Neck Flange, Slip on Flange, Blind Flange, Plate Flange, Threaded Flange, Non-Standard Flange, Socket Weld Flange) with the DN15mm-DN1500mm in the professional level and our main products include PL,SO,WN,BLD.in standards - ANSI; DIN; BS: UNI; JIS; SABS1000/3. Furthermore, we do custom design as well.

Group Strength Advantages:

With registered capital RMB 84.76 million, covering 220,000 square meters, 76 workshops, 1058 Staffs, 950 sets of cold and heat machining equipment, 50 sets of numerically controlled equipment, ZYZJ O&G Group has consecutively established the strategic partnership with SINOPEC, CNPC, Zhongyuan Oil Field and Shengli Oil Field, and leveraged its technical and manufacturing advantages to provide satisfactory products and solution services to customers at home and abroad. 

All products are manufactured under ISO9001, ISO14001,and comply with the requirements of API spec (acquired in 1999, including API 4F、5CT、7K、8C、11AX、11B、11E）

With professional teams experienced in the maintenance of drilling machinery,TDS,SCR equipment, we can undertake Pumping Unit oil well on-site management services.

Long-term supply accessories of Drilling Rigs, workover rigs, Mud Pump and beam pumping unit, and distribute drill pipe, drill collar, casing, tubing, special drill pipe sub etc.

One of professional oilfield equipment manufacturers & exporters from China.Our products are based on advanced production line and testing equipment,designed and manufactured according to certification of API, ISO, GOST, etc.

On the basis of more than 40 years of manufacturing experience,more than 30 years of export experience, high quality products with competitive price, better understanding in Chinese market,High quality after-sales service,we hope to establish business relations with your company.

We are major at Cementing and Fracturing Equipment, Gate Valve and wellhead Christmas Tree,Plunger Pumps and Mud Pumps, Flow line Products, Solid Control Equipment,Drilling Rigs and Work over Rigs Matching Equipment etc.

High quality & Steady quantity & Most competitive price will be sent for you.