ASME B16.49:2007 pdf free download

ASME B16.49:2007 pdf free download.Factory-Made,Wrought Steel, Buttwelding Induction Bends for
Transportation and Distribution Systems.
intrados: the inside arc of the bend.
minimum (design) wall lJuckncss: the wall thickness spedfled or computed in accordance with the piping code as the minimum acceptable for the temper-ahire and pressure application.
qualfication frend: a bend segment that is produced and tested and is used to qualify the bending procedure.
transition zone: the area, at the tangent points of a bend, that covers the change (transition) from unheated to heated material.
NOTE: 11w terms “bender” and manulacturer” are used inter’ chaneahIy In this 5tandard
1.11 Ordering Information
The purchaser shall be responsible to specify all the ordering information necessary to purchase the needed bends. Examples of such information include, hut are flot limited to. the following:
(a) quantity
(b description of bend and nominal dimensions (i.e., size, bend radius, wall thickness, bend angle, tangent lengths. etc.)
(c) steel composition by grade
(d) seamless or welded
(e) specification number (including year)
(f) supplementary requirements from section SRI5
(g) additional requirements
Nonmandatory Appendix B is provided as one possible guideline for providing the required information,
2 PRESSURE RATINGS
2,1 Basi5 of Ratings
The allowable internal pressure rating for bends designed in accordance with this Standard shall not be less than that which is calculated for straight seamless pipe (or for pipe welded with a joint efficiency factor of 1.0) of equivalent material (as shown by comparison of composition and mechanical properties in the respective material specifications) in accordance with the rules established in the applicable sections of the referencing code for prvssre piping. For these calculations, applicable data for the nominal size, nominal wall thidcness, and material equivalent to that of the bend material shall be used. Nominal size, nominal wall thickness, and material identity markings on th bend may be used in lieu of pressure-rating markings.