SIGMA GAS AND ENGINERING LIMITED: public contracts won without a rival in Tanzania: 12 uncontested awards; 44% of its awards; 12 without a competition; 0 single bid.
Assay record ASY-TZ-06M766I0A3 · Cite as: Assay Systems, “SIGMA GAS AND ENGINERING LIMITED: public contracts won without a rival in Tanzania”, https://assay-systems.com/register/tz/uncontested/s/sigma-gas-and-enginering-limited/
SIGMA GAS AND ENGINERING LIMITED won 12 of its 27 public contract awards in Tanzania without a rival from 2024-04-11 to 2026-01-06: 12 without a competition and 0 after a competition that drew a single bid. 8 buyers awarded it without a rival, the largest JAKAYA KIKWETE CARDIAC INSTITUTE with 3.
An award is uncontested when the buyer had no rival offer to weigh: it was made without a competition (direct award, negotiated procedure without a call for tenders, sole-source or advance-notice contract), or a competition was held and only one bid arrived. Every count below is built award by award from the official notices. Awards to individuals are not included.
JAKAYA KIKWETE CARDIAC INSTITUTE gave SIGMA GAS AND ENGINERING LIMITED 8 awards: 3 without a competition, 0 after a competition with a single bid. First 2024-04-11, latest 2026-01-06.
SOUTHERN ZONAL REFERRAL HOSPITAL (MTWARA) gave SIGMA GAS AND ENGINERING LIMITED 2 awards: 2 without a competition, 0 after a competition with a single bid. First 2025-01-24, latest 2025-06-20.
TANZANIA PETROLEUM DEVELOPMENT CORPORATION gave SIGMA GAS AND ENGINERING LIMITED 2 awards: 2 without a competition, 0 after a competition with a single bid. First 2024-07-19, latest 2025-05-13.
SONGWE REGIONAL REFFERAL HOSPITAL gave SIGMA GAS AND ENGINERING LIMITED 2 awards: 1 without a competition, 0 after a competition with a single bid. First 2024-05-27, latest 2024-06-11.
JAKAYA KIKWETE CARDIAC INSTITUTE - DAR GROUP HOSPITAL gave SIGMA GAS AND ENGINERING LIMITED 1 award: 1 without a competition, 0 after a competition with a single bid. First 2024-08-21, latest 2024-08-21.
GOVERNMENT CHEMIST LABORATORY AUTHORITY gave SIGMA GAS AND ENGINERING LIMITED 1 award: 1 without a competition, 0 after a competition with a single bid. First 2024-05-20, latest 2024-05-20.
MUHIMBILI NATIONAL HOSPITAL gave SIGMA GAS AND ENGINERING LIMITED 2 awards: 1 without a competition, 0 after a competition with a single bid. First 2025-01-27, latest 2025-12-15.
MKULAZI HOLDING COMPANY LIMITED gave SIGMA GAS AND ENGINERING LIMITED 1 award: 1 without a competition, 0 after a competition with a single bid. First 2025-06-23, latest 2025-06-23.
| Date | Buyer | How | Stated reason |
|---|---|---|---|
| 2025-12-15 | MUHIMBILI NATIONAL HOSPITAL ocds-mv5oob-TR129-2025-2026-G-55-S002 | No competition direct | Minor Value Procurement |
| 2025-07-04 | JAKAYA KIKWETE CARDIAC INSTITUTE ocds-mv5oob-TR133-2024-2025-G-107-S003 | No competition direct | Minor Value Procurement |
| 2025-06-23 | MKULAZI HOLDING COMPANY LIMITED ocds-mv5oob-TR191-001-2024-2025-NC-28-S001 | No competition direct | Minor Value Procurement |
| 2025-06-20 | SOUTHERN ZONAL REFERRAL HOSPITAL (MTWARA) ocds-mv5oob-52-029-2024-2025-G-100-S002 | No competition direct | Minor Value Procurement |
| 2025-05-13 | TANZANIA PETROLEUM DEVELOPMENT CORPORATION ocds-mv5oob-TR24-2024-2025-G-20-S001 | No competition direct | Minor Value Procurement |
| 2025-01-24 | SOUTHERN ZONAL REFERRAL HOSPITAL (MTWARA) ocds-mv5oob-52-029-2024-2025-G-95-S002 | No competition direct | Minor Value Procurement |
Every uncontested award in Tanzania · All countries · SIGMA GAS AND ENGINERING LIMITED in the register
Source: contract awards published by the Public Procurement Regulatory Authority of Tanzania (PPRA) in the Open Contracting Data Standard (data.open-contracting.org), licensed under CC BY-SA 4.0; awards from January 2016 to 30 September 2026, accessed 15 October 2026. This adaptation is shared under the same licence. Awards are matched to their buyer and supplier as published. Values in these notices often state a framework ceiling rather than a contract amount, so awards are counted, not summed. Updated 17 October 2026.