AWS B2.1-1/8-229 pdf free download

AWS B2.1-1/8-229 pdf free download.Gas Tungsten Arc Welding followed by Shielded Metal Arc Welding of Carbon Steel (M-1/P-1, Groups 1 or 2) to Austenitic Stainless Steel (M-8/P-8, Group 1), 1/8 through 1-1/2 inch Thick, ER309(L) and E309(L)-15,-16, or -17, As-Welded Condition, Primarily Pipe Applications.
Scope. The data to support this Standard Welding Procedure Specification (SWPS) have been derived from the above listed Procedure Qualification Records (PQRs) which were reviewed and validated under the auspices of the Welding Research Coun- cil. This SWPS is not valid using conditions and vari- ables outside the ranges listed. The American Welding Society considers that this SWPS presents information for producing an acceptable weld using the conditions and variables listed. The user needs a significant knowledge of welding and accepts full responsibility for the performance of the weld and for providing the engineering capability, qualified per- sonnel, and proper equipment to implement this SWPS. Application. This SWPS is to be used only as per- mitted by the applicable fabrication document(s) [such as code, specification, or contract docu- ment(s)]. The fabrication document(s) should spec- ify the engineering requirements such as design, need for heat treatment, fabricating tolerances, qual- ity control, and examination and tests applicable to the end product. User’s Responsibility. An SWPS does not replace or substitute for fabrication codes, specifications, contract requirements, or capability and judgment on the part of the user. An SWPS is to be used only as permitted by the applicable fabrication code, specification, or contract document. The ability to produce production welds having prop- erties suitable for the application depends upon sup- plementing the SWPS with appropriate performance qualfication tests and sound engineering judgment. The user is responsible for the quality and perfor- mance of the final product in accordance with the provisions of the fabrication document(s). Supplementary Instructions. To adapt this SWPS to a specific application, a user may issue supple- mentary instructions. Such instructions may consist of tighter fit-up tolerances, higher minimum preheat temperature, or any other instructions necessary to produce a weldment that meets the requirements of the fabrication document(s). These instructions shall not be less restrictive than provided in the SWPS.Safety. Safety precautions shall conform to the lat- est edition of ANSI z49.1, Safety in Welding, Cutting, and Allied Processes, published by the American Welding Society. This specification may involve hazardous materials, operations, and equipment. The specification does not purport to address all of the safety problems associated with its use. It is the responsibility of the user to establish appropriate safety and health prac- tices. The user should determine the applicability of any regulatory limitations prior to use.Welding Grade Argon or AWS A5.32, Class SG-A. Gas shall remain in place until the joint is completed or at least 3/16 in weld metal has been deposited. When introducing root-shielding gas to initiate a purge; it is necessary to have at least a 6-volume change of atmo- sphere within the purge zone prior to welding. As an alternative, the oxygen content of the purge zone shall be equal to 2% or less, as measured with on oxygen analyzer, prior to welding. It is not neces- sary to shield the root of fllet welds or groove welds with backing or back gouging.AWS B2.1-1/8-229 pdf download.