Forming Technologies

Cold Pressing
Leveraging the plastic deformation property of metals, this process applies pressure to flatten micro-convex peaks on the workpiece surface, thereby reducing surface roughness. High pressure is exerted in the mold cavity to form dense blanks, with techniques including surface rolling and extrusion. It is suitable for materials like polycarbonate and polypropylene. Cold pressing can effectively enhance the material's tensile strength and elastic modulus.

Forging
First, select appropriate metal materials and conduct pretreatment such as cutting and cleaning. Heat the metal blank to a specific temperature to improve its plasticity and reduce deformation resistance. Under the impact or pressure of a forging hammer or press, the blank undergoes plastic flow in the mold to form the desired shape (metal can deform freely in all directions under force). Forgings produced with special molds feature precise dimensions. After forging, the workpiece is cooled to stabilize its shape and performance, followed by heat treatment, machining, and surface treatment to further optimize performance and accuracy.

1-Seamless 90 Short Radius Elbow for Chemical Industry

Mandrel Forming
Design the mandrel's shape and size according to processing requirements, then use precision technologies like turning and grinding to produce high-precision mandrels. Install the mandrel on equipment such as lathes or grinders and debug it to ensure stable workpiece support. When processing thin-walled metal pipes, inserting a mandrel into the pipe cavity provides radial support, preventing deformation during turning and achieving high-precision processing.

Comprehensive Size Ranges

Seamless 90° Short Radius Elbow (DN15 - DN600)
Seamless 90° short radius elbows are typically made of high-quality carbon steel, stainless steel, or alloy steel, processed via hot pushing, forging, and other techniques. They boast dense structures, high strength, and excellent corrosion resistance, making them suitable for high-pressure, high-temperature pipeline systems and those with strict medium purity requirements.

★ Sizes comply with ASTM and GB/T 12459-2017 standards (unit: mm):

Nominal Diameter DN	Outer Diameter D	Short Radius R	End Outer Diameter D1	Center to End Dimension H
15	21.3	15	21.3	15
20	26.9	20	26.9	20
25	33.7	25	33.7	25
32	42.4	32	42.4	32
40	48.3	40	48.3	40
50	60.3	50	60.3	50
65	76.1	65	76.1	65
80	88.9	80	88.9	80
100	114.3	100	114.3	100
125	141.3	125	141.3	125
150	168.3	150	168.3	150
200	219.1	200	219.1	200
250	273	225	273	225
300	323.9	300	323.9	300
350	355.6	350	355.6	350
400	406.4	400	406.4	400
450	457	450	457	450
500	508	500	508	500
600	610	600	610	600

Welded 90° Short Radius Elbow (DN15 - DN1200)
Welded 90° short radius elbows are formed by welding steel plates or coiled pipes. The production process is flexible with lower costs, enabling the manufacture of larger-diameter products. They are widely used in low-pressure, large-diameter pipelines for conveying water, gas, oil, and other media.

★ Size specifications (unit: mm)

Nominal Diameter DN	Outer Diameter D	Short Radius R	End Outer Diameter D1	Center to End Dimension H
15	21.3	15	21.3	15
20	26.9	20	26.9	20
25	33.7	25	33.7	25
32	42.4	32	42.4	32
40	48.3	40	48.3	40
50	60.3	50	60.3	50
65	76.1	65	76.1	65
80	88.9	80	88.9	80
100	114.3	100	114.3	100
125	141.3	125	141.3	125
150	168.3	150	168.3	150
200	219.1	200	219.1	200
250	273	225	273	225
300	323.9	300	323.9	300
350	355.6	350	355.6	350
400	406.4	400	406.4	400
450	457	450	457	450
500	508	500	508	500
600	610	600	610	600
700	711	700	711	700
800	813	800	813	800
900	914	900	914	900
1000	1016	1000	1016	1000
1100	1118	1100	1118	1100
1200	1219	1200	1219	1200