2025 Xiangyu Salt & Chemical Pressure Pipeline Installation Welding Procedure Qualification and Price Comparison Document

1. Price comparison conditions
This quotation project—Welding Procedure Qualification for Pressure Pipeline Installation in 2025 by Chongqing Xiangyu Salt & Chemical Co., Ltd.—has been approved by Chongqing Xiangyu Salt & Chemical Co., Ltd. The project owner is Chongqing Xiangyu Salt & Chemical Co., Ltd., and the project now meets the conditions for competitive bidding. We are hereby inviting quotations and conducting a price comparison for this project.
2. Project Overview and Price Comparison Scope
2.1 Project Location: Within the premises of Chongqing Xiangyu Salt & Chemical Co., Ltd.
2.2 Project Scope: Welding process qualification for pressure piping installation at the premises of Chongqing Xiangyu Salt & Chemical Co., Ltd. in 2025. (See attached list: Quotation Table for Welding Process Qualification.)
2.3 Contract Term: One year from the date of contract signing; the specific start date shall be subject to Party A’s notice.
2.4 Project Scope: Welding Procedure Qualification for Pressure Piping Installation in 2025 within the premises of Chongqing Xiangyu Salt & Chemical Co., Ltd. (Material Range: Low-carbon steel and low-alloy steel, austenitic stainless steel, non-ferrous metals; Welding Methods: Gas welding, shielded metal arc welding, submerged arc welding, gas-shielded metal arc welding, tungsten inert gas welding, etc.; Welding Positions: Butt welds, fillet welds. See Appendix—Welding Procedure Qualification Quotation Table for details.)
3. Qualification Requirements for Bidders
3.1 An independent legal entity registered within the territory of China;
3.2 The unit conducting welding process qualification must be accredited by the China National Accreditation Service for Conformity Assessment (CNAS) and have coverage in the field of welding process qualification before it can carry out qualification activities.
3.3 Personnel conducting the “assessment” must be engineers or welding technicians engaged in welding technology work.
3.4 Personnel conducting nondestructive testing on evaluated specimens must hold a Level II or higher certificate issued by the Market Supervision Administration; other inspection personnel shall be certified by the relevant authorities.
3.5 The equipment used for welding process qualification shall be in normal working condition, and instruments, gases, flow meters, etc., shall be qualified.
3.6 The collaborating entity shall provide evidence of having undertaken at least three projects related to pressure piping installation and welding procedure qualification in the oil and chemical industries since 2020 (based on the contract signing date).
3.7 Sound financial condition, with sufficient assets and capabilities to effectively perform the contract;
3.8 This quotation does not accept joint venture bids.
4. Requirements of the contracting party:
4.1 This inquiry results in the lowest total quoted price among all bid items being selected.
4.2 A qualified welding assessment report shall be issued within one month from the date the welding assessment specimen is delivered to Party B.
4.3 Assessment Requirements:
4.3.1 The welding procedure qualification unit shall evaluate the commissioned welding procedures in accordance with the welding procedure qualification standards, specifications, drawings, and other technical documents provided by Party A.
4.3.2 The unit responsible for welding procedure qualification shall develop the welding procedure qualification plan, including the welding procedure qualification test plan and the welding procedure qualification report, etc.;
4.3.3 The unit responsible for welding procedure qualification shall conduct welding procedure qualification tests, including preparation of welding specimens, welding operations, weld inspection, sample collection and machining, and examination of test specimens.
4.3.4 The unit responsible for welding procedure qualification shall analyze and evaluate the results of welding procedure qualification tests and propose improvement suggestions.
4.3.5 The welding process qualification unit is responsible for preparing the welding process qualification report and submitting it to the client company in a timely manner.
4.4 Inspection of Welding Procedure Qualification Specimens and Samples:
4.4.1 The specimens shall undergo visual inspection, non-destructive testing, mechanical property testing, macroscopic metallographic examination, and other special inspection items as required. The inspections shall be conducted and evaluated in accordance with the specified national or ministerial standards.
4.4.2 Visual Inspection Requirements: The surface of the test specimen shall be free of cracks, lack of fusion, incomplete penetration, and any defects exceeding the limits specified in the relevant standards.
4.4.3 In nondestructive testing, perform inspections according to the standard specifications;
4.4.4 The mechanical performance test items for welded joints include tensile tests, bend tests (face bend, root bend, and side bend), and impact tests (when specified). The categories and quantities of specimens, the methods for specimen preparation and cutting, as well as the test procedures and acceptance criteria, shall all be conducted in accordance with the provisions of the specified standards.
4.5 The welding procedure qualification shall be conducted in accordance with the assessment criteria specified in the design documents and the requirements of Party A.
GB50236-2020 "Code for Construction and Acceptance of On-site Equipment and Industrial Pipeline Welding Works"
DL/T868-2014 "Welding Procedure Qualification Code"
NB/T 47014—2023 «Welding Procedure Qualification for Pressure Equipment».

4.6 Settlement Method: The settlement amount shall be the product of the actual number of weld assessments conducted on-site by both parties and the unit price specified in the signed contract.
4.7 Upon receipt by Party A of the weld assessment report and the special value-added tax invoice from Party B, and after these documents have been recorded in the accounts, Party A shall pay the full fee within two months. Payment method: Bank acceptance.
4.8 The quotation includes labor costs, material costs, equipment usage fees, taxes, and inspection fees incurred by the bidder, and is not limited to the above-mentioned expenses. Party A will not pay any additional fees separately.
4.9 This quotation takes into account the lowest total of individual items (see Attachment 2 for details).
5. Quotation deadline
Deadline: 14:00 (Beijing Time), June 12, 2025
6. Contact Information
Price Comparison Person: Chongqing Xiangyu Salt & Chemical Co., Ltd.
Address: No. 98 Longxiang Avenue, Wanzhou District, Chongqing City
Contact: Sun Tongying Phone: 13517321268

Disclaimer: The official platform for our company’s announcement of this tender is the website of Chongqing Xiangyu Salt & Chemical Co., Ltd.: http://www.cqxyyh.com. Apart from this, our company has not published any tender information on any other websites, forums, or media platforms. Any tender information reproduced from other sources and attributed to our company as the tendering entity is unauthorized and therefore invalid. We reserve the right to pursue legal action against those responsible for such unauthorized reproduction.