Carbon Steel Forged Bend

Carbon steel elbow is first divided according to its radius of curvature, which can be divided into long radius elbow and short radius elbow. Long radius elbow refers to its radius of curvature equal to 1.5 times the outer diameter of the pipe, that is, R=1.5D. A short radius elbow means that its radius of curvature is equal to the outer diameter of the pipe, that is, R=1.0D. (D is the diameter of the elbow, R is the radius of curvature. D can also be expressed in times.) If divided by pressure level, there are about seventeen types, which are the same as the American pipe standards, including: Sch5s, Sch10s, Sch10 , Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, of which the most commonly used are STD and XS. According to the angle of the elbow, there are 45° elbow, 90° elbow and 180° elbow. The executive standards include GB/T12459-2005, GB/T13401-2005, GB/T10752-1995, HG/T21635-1987, D-GD0219, etc.

Specifications : ASTM A234 & ASME SA234

Dimensions : ASME/ANSI B16.9 / B16.28 and MSS SP-43 / SP-75

Size : Seamless Pipe Bends (1/2″ – 24″), ERW / Welded / Fabricated Pipe Bends (2″ – 36″)

Outer Diameter : 38.0 mm – 206.0 mm

Wall Thickness : 1.5 mm / 2.0 mm / 3.0 mm – greater wall thickness at request

Bend Radii : 75 / 100 / 150 / 250 / 300 / 500 / 800 / 1,000 / 1,200 / 1,500 mm

Bending Radius(R): R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom

Bending angle (θ): 15°, 30°, 45°, 60°, 90°, 135°, 180°

• The advantages of this carbon steel elbow manufacturing process are mainly reflected in the following aspects:

(1) There is no need for pipe blanks as raw materials, which can save the cost of pipe making equipment and molds, and carbon steel elbows with any large diameter and relatively thin wall thickness can be obtained.
(2) The blank is a flat plate or a developable curved surface, so the cutting is simple, the accuracy is easy to ensure, and assembly and welding are convenient.
(3) Due to the above two reasons, the manufacturing cycle can be shortened and the production cost is greatly reduced. Since it does not require any special equipment, it is especially suitable for on-site processing of large carbon steel elbows.
(4) Carbon steel elbows are suitable for pipeline series in petroleum, natural gas, chemical industry, hydropower, construction and boiler industries.

Forge Steel Pipe Elbows

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