Threaded elbow: A pipe fitting used to change the direction of a pipe. The curvature radius of all elbows R≤3D, the most used R=1.5D long radius elbow  R=1D short radius elbow. Common angles are 90°, 45°, 30°,  180°. Reducing elbows (that is, the connection to the reducing pipe is achieved while changing the direction of the pipe) are sometimes used in small quantities,  threaded elbows are produced according to GB/T 14383  ASME 16.11 production standards.

Threaded pipe fittings are pipe fittings with threads, made of stainless steel, alloy steel, carbon steel  other materials, suitable for each pipe connection. Threaded pipe fittings can be subdivided into more than a dozen types, covering a variety of forms such as straight connection  curved connection, including threaded elbow, threaded four, threaded three, threaded pipe hoop, threaded cap, threaded joint, threaded nipple, reducing nipple, hexagonal outer wire, threaded pipe plug, threaded core.

What is the standard for threaded fittings?

GB is an international standard  ASME  MSS are American standards.

GB/T 14383: This standard specifies the dimensions, materials, manufacturing, inspection, testing  marking of forged socket welding  threaded pipe fittings, as well as the supply content. Socket welding  threaded fittings are usually manufactured using forged metal materials of nominal size  greater than DN100 in industrial piping systems.

ASME B16.11: This standard specifies the pressure  temperature ratings, dimensions, tolerances, standards  materials of welded  threaded pipe fittings. Manufacturers  buyers can coordinate the manufacture of forged  rolled pipe fittings of special sizes, shapes, etc. Guidelines for the selection of pipe fitting types  materials suitable for specific fluid use fall outside the scope of this standard.

Threaded Elbow Specification

Notes:

1) The thread is machined according to GB/T 12716 equivalent to NPT thread in ASME B1.20.1.

Referenced Weight Lists       Unit: kg