SCH5 180 Degree Return Bends

Seamless elbow forming method

1. Forging and pressing: use a type forging machine to push the end of the tube or part to reduce the outer diameter

The commonly used forging machine has rotary type, connecting rod type and roller type.

2. Roll rolling: generally not using the core shaft, suitable for the inner circle of thick wall tube. Place the core inside the pipe, and the outer circumference is pushed by roller, used for round edge processing.

3. Pressing method: to extend the tube end to the required size and shape in the punch.

4. Forming method: there are three kinds of methods are commonly used, a method called stretching method, another method called stamping method, and the third roller method, there are three or four roller, roller, an adjusting roller, two fixed adjusting fixed roller distance, finished pipe is bent.

5. Bloating method: one is to place the rubber in the tube, and the upper part is compressed with the punch to make the tube bulge out. The other method is the hydraulic bulge forming, filling the middle of the tube into the liquid, the liquid pressure to drum the tube into the desired shape, and the production of the bellows is mostly used in this way.

Seamless elbow making process

Seamless elbow does not produce corrosion, pitting, rust or wear. Stainless steel is one of the most powerful materials in the building materials. Since the stainless steel has good corrosion resistance, it can keep the structural components for a long time to maintain the integrity of the engineering design. The raw material of the seamless elbow pipe is a round tube billet, which needs to be cut and processed by the cutting machine for about a meter of billet, and is sent to the furnace for heating. The billets are heated in a furnace and the temperature is about 1,200 degrees Celsius. Temperature control in furnace is a key problem. After the round tube billet is out, it will go through the pressure perforator to wear the blank. Fuel is hydrogen or acetylene.

Generally more common piercer is conical roller piercer, which has high production efficiency, good quality and perforation diameter, which can wear many kinds of fittings. After perforation, the round tube billet has been rolled by three rolls, rolled or squeezed. After extruding, take out the diameter of the pipe. The sizing machine is used to form the pipe fitting through the high speed of the taper drill.

About Us:

Cangzhou Authentic Pipe fitting Manufacturing Co., Ltd., which specialize in the manufacture and export of Pipe fittings for 20 years,Covers an area of 100,000 square meters,among them there are the building area of 50,000 square meters. Our products is covering ELBOW,FLANGE,TEE, REDUCER, CAP and steel pipes, our material is including carbon steel , stainless steel, alloy steel with black painting and am anti-rust oil. We also have ISO, PED ,GOST and API certificates to make sure our quality, our goods is sold to Europe, Southeast ,East Europe and many other countries.

Our Certificate:

1. Are you trading company or manufacturer ?
We are manufacturer
2. How long is your delivery time?
Generally it is 10-15 days if the goods are in stock. or it is 10-15 days if the goods are not in stock, it is according to
quantity.

3. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.

4. What is your terms of payment ?
Paymen 30% T/T pay in advance , the balance should be paid against the copy of B/L