ANSI B16.9 A234 Wp11 Lr 45/90 Degree Forged Carbon/Stainless Steel Elbows

Carbon steel elbow process

Seamless Elbow: Elbow is a type of pipe fitting used in pipe bends. Among all the pipe fittings used in the pipeline system, the proportion is the largest, about 80%. Usually, different forming processes are selected for elbows of different materials or wall thicknesses. Commonly used seamless elbow forming processes in manufacturers include hot pushing, stamping, extrusion, etc.

hot push forming

The hot push elbow forming process uses a special elbow push machine, a core mold and a heating device, so that the blank set on the mold moves forward under the push of the push machine, and is heated, expanded and bent during the movement. the process of. The deformation characteristic of the hot push elbow is that the diameter of the tube blank is determined according to the law that the volume of the metal material does not change before and after plastic deformation. The diameter of the tube blank used is smaller than the diameter of the elbow. The metal flow is compensated to other parts thinned by the expansion, so as to obtain an elbow with a uniform wall thickness.

The hot push elbow forming process has the characteristics of beautiful appearance, uniform wall thickness and continuous operation, and is suitable for mass production. Therefore, it has become the main forming method of carbon steel and alloy steel elbows, and is also used in certain specifications of stainless steel elbows. is taking shape.

The heating methods in the forming process include intermediate frequency or high frequency induction heating (the heating coil can be multi-turn or single-turn), flame heating and reverberatory furnace heating. The heating method used depends on the requirements of the formed product and energy conditions.

stamping

Stamping and forming elbow is the earliest forming process used in mass production of seamless elbows. It has been replaced by hot push method or other forming processes in the production of elbows of common specifications. Less, the wall thickness is too thick or too thin.

Factory Information:

Hebei Haihao High-pressure Flange & Pipe Fittings Group Co., Ltd. was founded in 1982, Haihao Group owns a wholly-owned subsidiary named Hebei Haihao Group Premium Pipeline Equipments Co., Ltd. Hebei Haihao High-pressure Flange & Pipe Fittings Group Co., Ltd. covers an area of 580,000 square meters, has 660 employees, total assets of RMB 250 million, and an annual output of nearly 100,000 tons. Currently, Haihao Group has 22 advanced flange and pipe fitting production lines; exquisite processes including forging, stamping, medium-frequency pushing, machining, cold forming, hot extrusion and heat treatment; and advanced detection devices in terms of chemical analysis, metallographic analysis, non-destructive testing and mechanical performance tests. Haihao Group produces flange and pipe fittings, covering different specifications of high-pressure, medium-pressure and low-pressure stainless steel, alloy steel and carbon steel flange, elbows, elbow pipes, tees, reducers, socket components and other pipeline components in line with the international and Chinese standards.

FAQ:

Q1. Where is your factory ?
A1:Our company’s processing center is located in Cangzhou,HeBei, China.

Q2. What are your company's main products ?
A2: Our main products are flange, elbows, elbow pipes, tees, reducers, socket components and other pipeline components in line.

Q3. How do you control quality ?
A3: Mill Test Certification is supplied with shipment, Third Party Inspection is available.