AWS B2.1-4-218:1999 pdf download.Standard Welding Procedure Specification (WPS)
The data to support this Standard Welding Procedure Specification (WPS) were derived from the above-listed Procedure Qualification Records (PQRs) which were reviewed and validated under the auspices of the Welding Research Council. This Standard WPS is not valid using conditions and variables outside the ranges listed. The American Welding Society considers that this Standard WPS 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 personnel, and proper equipment to imple-ment this Standard WPS.
Application. This Standard WPS is to be used only as permitted by the applicable fabrication docu-ment(s); such as code, specification, or contract document(s). The fabrication document(s) should specify the engineering requirements such as design, need for heat treatment, fabricating toler-ances, quality control, and examination and tests applicable to the end product.
The ability to produce production welds having properties suitable for the application depends upon supplementing the Standard WPS with appropriate performance qualification tests and sound engineer-ing judgment. The user is responsible for the quality and performance of the final product in accordance with the provisions of the fabrication document(s).
Supplementary Instructions. To adapt this Stan-dard WPS to a specific application, a user may issue supplementary instructions. Such instructions may consist of tighter fit-up tolerances, higher minimum preheat temperature or any other instructions nec-essary to produce a weldment that meets the requirements of the fabrication document(s). These instructions shall not be less restrictive than pro-vided in the Standard WPS.
Safety. Safety precautions shall conform to the latest edition of ANSI Z49.1, Safety in Welding, Cut-ting, and Allied Processes, published by the Ameri-can Welding Society.
This specification may involve hazardous mate-rials, operations, and equipment. The specification does not purport to address all of the safety prob-lems associated with its use. It is the responsibility of the user to establish appropriate safety and health practices. The user should determine the applicabil-ity of any regulatory limitations prior to use.
The AWS Board of Directors has adopted a policy whereby all official interpretations of AWS standards will be handled in a formal manner. Under that policy, all interpretations are made by the committee that is respon-sible for the standard. Official communication concern-ing an interpretation is through the AWS staff member who works with that committee. The policy requires that all requests for an interpretation be submitted in writing. Such requests will be handled as expeditiously as possi-ble but due to the complexity of the work and the proce-dures that must be followed, some interpretations may require considerable time.AWS B2.1-4-218 pdf download.