Request for Quotations – Helium Lines

SARAO/SNAF/MA1084/06/2026-3887

See details below or the tender documentation

Tender Closed on: 2026-07-13 11:00

South African Radio Astronomy Observatory (SARAO)

Gas Supply Systems Installation and Maintenance

Cape Town, Western Cape

South African Radio Astronomy Observatory (SARAO)

South African Radio Astronomy Observatory (SARAO) Tenders

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RFQ

REQUEST FOR QUOTATIONS – HELIUM LINES

File

Action

SARAO RFQ - SARAO_SNAF_MA1084062026-3887 Helium lines.pdf

M1120-0065 Data Pack (Rev 2).pdf

M1120-0064 Data Pack (Rev 2).pdf

RFQ NUMBER: SARAO/SNAF/MA1084/06/2026-3887

RFQ PUBLICATION DATE: 29 JUNE 2026

CLOSING DATE AND TIME: 13 JULY 2026 at 11:00AM

QUOTATIONS TO BE SUBMITTED VIA EMAIL TO: [email protected]

PREFERENCE POINTS SYSTEM: 80/20

DELIVERY INFORMATION

LOCATION: SARAO, LIESBEECK HOUSE, RIVER PARK, GLOUCESTER ROAD, MOWBRAY, CAPE TOWN, 7700

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SARAO Web

SARAO Web

2026-06-29 12:49:30

2026-06-29 12:51:47

REQUEST FOR QUOTATIONS – HELIUM LINES


Tender Summary

Objectives

The primary objective of this tender is to procure high-quality helium supply hoses and associated fittings for UHF receiver applications. The supplier is expected to provide welded helium feed hoses, straight fittings, and related components that meet specified technical standards to ensure reliable helium transfer in the intended systems.

Scope

The scope encompasses the supply of:

  • Welded UHF helium feed hoses (Part No. EA-MKS-0074-AD)
  • UHF helium feed hose straight fittings (Part No. EA-MKS-0077-AD)
  • Associated hardware including weld rings, weld adaptors, and adaptor No4 components
  • Externally sourced hardware such as O-rings, dust plugs, and ball valves
  • Manufacturing and assembly of complete helium supply hose assemblies

The scope also includes adherence to manufacturing instructions, quality standards, and delivery timelines as specified in the tender documentation.

Technical Requirements

The technical specifications include:

  • Use of stainless steel (SS304 or SS316) for hoses and fittings
  • Hoses must be welded, with detailed welding instructions provided
  • Hoses and fittings must conform to specified drawings and parts lists
  • Hoses should have appropriate wall thicknesses and corrugation counts for high-pressure and flexible applications
  • Assembly of hoses with weld rings, weld adaptors, and straight fittings must meet geometric and dimensional tolerances
  • Materials must be compatible with helium and vacuum conditions, with specified mass and geometry
  • All finished surfaces must be free of scratches, blemishes, burrs, and sharp edges
  • Hoses and fittings must withstand specified pressure ratings and temperature ranges

Skills and Requirements

The supplier must demonstrate:

  • Proficiency in precision welding of stainless steel components
  • Experience in manufacturing high-pressure, vacuum-compatible hoses and fittings
  • Capability to interpret detailed engineering drawings and parts lists
  • Knowledge of material properties of SS304, SS316, and other specified alloys
  • Quality control processes aligned with ISO 9001:2015 standards
  • Ability to produce components with tight dimensional tolerances and surface finish requirements
  • Experience in assembling complex hose systems with welded and mechanical fittings
  • Compliance with safety and handling standards for high-pressure and vacuum components

In summary, the tender seeks a supplier with proven expertise in stainless steel welding, precision manufacturing, and assembly of helium transfer hoses and fittings, ensuring all components meet the detailed technical and quality standards outlined in the tender documentation.

This summary is AI generated. Download the tender documents for all the information.

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