Straight seam elbow seamless elbow

Straight seam elbow

The company mainly produces carbon steel, stainless steel, alloy steel elbow, head, cap, elbow and other pipe fittings.

Straight sewn elbow is one of pipe fitting. Straight sewn elbow is suitable for a pipe fitting at a elbow.The size of the straight seam elbow produced by our company is 18MM2220MM, and the wall thickness is more than 2MM. The wall thickness can be directly manufactured according to the customer's requirements.In addition, the Angle of the straight joint elbow is 45 degrees 90 degrees 60 degrees 180 degrees, can also be manufactured in accordance with the requirements, straight joint elbow products including carbon steel, alloy steel, stainless steel.Straight seam elbows are widely used in Marine, petroleum, petrochemical, electric power, thermal power, natural gas, beverage, water conservancy and other projects.

Straight seam pipe bend is we continuously provide products production technology at the same time, in the production process continuously strengthen and improve the product quality assurance system and the production process of each link strict requirements and control, for each production of products to strict quality testing, ensure the quality of straight seam pipe bend, do customers no return of goods sales record.

Seamless elbow is a common pipe fitting used at the pipe bend, in the pipe system used more than all pipe fitting, the proportion is about 80%, usually for different material wall thickness of the elbow to choose different forming process, at present the manufacturer commonly used seamless elbow forming process, such as stamping, extrusion.

Molding method of seamless elbow:

Forging and pressing method: a part of elbow is punched and stretched by type forging machine to reduce the outside diameter. Common type forging machine includes rotary type, connecting rod type and roller type.

Roll tie method: generally does not have the heart axis, is suitable for the thick wall tube inside the round edge.The core is placed inside the tube, and the circumference is pushed by the roller for the round edge machining.

Punching: Tube ends are expanded to the desired size and shape with taper cores on a punch press.

Bending forming method: there are three methods commonly used, one is called stretching method, the other is stamping method, and the other is the roller method, which has 3-4 sticks, two fixed sticks, one adjusting stick, adjusting the distance of the fixed stick, and the finished pipe fitting is bent.

Dilatation method: one is to place rubber in the tube, the top is pressed compression, is the tube bulge forming, the other is the hydraulic dilatation method, in the middle of the tube filled with liquid, liquid pressure to the tube into the desired shape, bellows production is mostly used in this method.

405406