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reducing elbow. It is used to connect two pipes with different diameters for turning. It is to cut a standard elbow blank into a V-shaped elbow, and then press, with the help of the power of conventional or special stamping equipment, to make the elbow blank directly subject to the deformation force in the mold and deform, so as to obtain a certain shape, The production technology of size and performance of product parts gradually becomes a circle under the pressure, and becomes a circular ring shell, which is welded and shaped, and then reshaped with elbow reshaping equipment. This kind of process is called "strip drawing" in the industry. Tube blank, die and equipment are the three elements of variable diameter elbow processing. Reducing elbow machining is a kind of metal cold deformation machining method. It is one of the main methods of metal plastic processing (or pressure processing), and also belongs to material forming engineering technology.

Carbon steel: ASTM / ASME a234 WPB, WPC

Alloy: ASTM / ASME a234 WP 1-wp 12-wp 11-wp 22-wp 5-wp 91-wp911, 15Mo3 15CrMoV, 35crmov

Stainless steel: ASTM / ASME A403 WP 304-304l-304h-304ln-304n

ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti

ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

Low temperature steel: ASTM / ASME A402 wpl3-wpl 6

High performance steel: ASTM / ASME a860 wphy 42-46-52-60-65-70