Vishal Tube Industries is an ISO 9001:2015 Certified company from India. We export all kinds of Pipe, Tubes, Fittings, Flanges, Sheet, Plate, Bars, Wire and Wire Mesh in Stainless Steels High-Nickel Alloy Grades. Contact for best price on 45/90 Degree Threaded Elbow. The function of a elbow is to change direction or flow in a piping system. By default, there are 5 opportunities, the 45°, 90° and 180° elbows, all three in the "long radius" version, and in addition the 90° and 180° elbows both in the "short radius" version.
The function of a Alloy20 45° elbow is the same as a Alloy20 90° elbow, but the measurement of dimensions is different to that of the 90° elbow. The radius of a 45° elbow is the same as the radius of the 90° LR (1½D). However, the center to face dimension is not equivalent to the radius as in 90° LR elbows. This is measured from each face to the point of intersection of the center lines perpendicular to each other, distances B on the image. This is due to the smaller degree of bend. Short radius 45° elbows are not available.
The most applied version is the 90° long radius and the 45° elbow, while the 90° short radius elbow is applied if there is too little space. The function of a 180° elbow is to change direction of flow through 180°. Both, the LR and the SR types have a center to center dimension double the matching 90° elbows. These fittings will generally be used in furnesses or other heating or cooling units. In addition to the defined elbows, there is the Reducing Elbow, which is a elbow with various diameters on the ends. Because this elbow, for many suppliers it is not a standard item, and thus probably a high price with a long delivery time, the use of a "normal" elbow with a separate reducer is an option if the situation allows.
Other degrees elbows can be machined from a standard elbow. Longer radius type, the center to face dimension e.g. is three times the nominal size (3D), even is available. Dimensions, dimensional tolerances etc. for long and short radius elbows are defined in ASME B16.9.
The weakest point on an elbow is the inside radius. ASME B16.9 only standardizes the center to face dimensions and some "squareness" dimensional tolerances. The wall thickness at the weld line location even is standardized, but not through the rest of an elbow. The standard states that the minimum tolerance will be within 12.5% of the minimum ordered wall thickness of the pipe. A maximum tolerance is specified only at the ends of the fitting.
Depending on the size of the diameter of the elbows these individually or in bundles are transported. Pipe fittings in bunches are taken together with metal strips or wires in the transverse direction. It is important to make sure that the strapping is very firm, so that the individual pipes can not move against each other and thereby suffer damage. Subject to transport, duration and turnover can be wrapped in eg plastic jute fabric and is provided at the bundle ends . specialty fittings shall be protected against corrosion and are usually coated or in appropriately chosen cases or wood-corrugated structures packaged. Specialty coatings, such as of PE, require padding to ensure that the protective layer is not damaged.
Marking of packages
Through a correct and complete marking of packaging will create the conditions to avoid misuse, accidents, wrong delivery, mass and volume losses and customs penalties. We do marking very clear and precise on Fittings. You should contrast clearly with the package, usually it is applied in black color
Types of Packaging
Special crates for U-Bend tubes with each radius separated