The 4 November notice covers replacement of one centrifugal air compressor at Shengli Oilfield’s No. 2 air station (second re-tender): 200–300 m³/min, inlet 0.1013 MPa, discharge 0.9 MPa, with bid closing and opening both at 09:00 on 17 November. The 5 November notice covers multi-project centrifugal compressors (second re-tender, ref. NWZ261011-2315-141545): three multi-shaft units of 400–500 m³/min and one of 100–200 m³/min, closing and opening at 09:00 on 27 November.
Both require bidders to be centrifugal compressor manufacturers with production, system integration, joint testing and after-sales capability, and to provide a track record of at least two years of continuous stable operation on comparable units.
What “re-tender” and “two years” tell us
Two re-tenders suggest the first round drew insufficient or non-compliant responses. Writing an operating-years requirement into the notice is a common way for owners to control risk on continuous-process utilities: an unplanned stop affects the whole production line, not just the air supply.
The owner’s selection order
- Duty stability first: inlet conditions, discharge pressure and flow swing determine machine type and control mode.
- System capability next: beyond manufacturing, integration, joint testing and service are required — a unit-only supplier cannot carry the scope alone.
- Verifiable record last: operating years and user references on comparable units outweigh nameplate figures.
This is why we supply vessel and station reference lists on industrial and marine projects. Shengyi’s 3,000+ marine installations and industrial continuous-duty cases can be provided with user and running-time details for verification.
At a glance
| Requirement | As published | How to prepare |
|---|---|---|
| Track record | ≥ 2 years continuous stable operation on comparable units | Compile a verifiable list of users and running times |
| Capability | Manufacturing + integration + joint testing + service | Unit-only suppliers must close the integration and service gap |
| Batch 1 | 200–300 m³/min, discharge 0.9 MPa | Inlet 0.1013 MPa; opening 17 Nov, 09:00 |
| Batch 2 | 400–500 m³/min × 3; 100–200 m³/min × 1 | Multi-shaft; opening 27 Nov, 09:00 |
Frequently asked
Why a two-year record?
Air stations are continuous-process utilities: an unplanned stop affects the whole line. Operating years are a common risk-control threshold and reflect reliability better than nameplate figures.
What does a re-tender indicate?
Usually that the first round drew insufficient or non-compliant responses. Bidders should re-check qualification clauses rather than only adjusting price.
Can a unit-only supplier bid?
The notices require manufacturing, integration, joint testing and service together; a supplier offering only the host cannot cover the full scope alone.
How is the record verified?
Typically user name, model, commissioning date and operating statement, with user reference calls if required. The tender documents govern.
Sources
Facts and figures are quoted from the public reports below; the commentary is our own analysis.
- (in Chinese) (in Chinese) 2026-11-04 Read the source
- (in Chinese) (in Chinese) 2026-11-05 Read the source
Images are Shengyi own photographs; no third-party images are reproduced.
Author：Shengyi Technical Department Reviewed by：Mr. Zhang (Sales & Sizing) Updated 2026-10-26