https://www.miningweekly.com
Africa|Business|Cranes|Engineering|fittings|Flow|Materials Handling|Pipe|Pipes|PROJECT|Roads|Services|Steel|Stewarts|Stewarts & Lloyds|Surface|System|Systems|transport|Trucks|Valves|Water|Flow|Products|Solutions|Pipe
Africa|Business|Cranes|Engineering|fittings|Flow|Materials Handling|Pipe|Pipes|PROJECT|Roads|Services|Steel|Stewarts|Stewarts & Lloyds|Surface|System|Systems|transport|Trucks|Valves|Water|Flow|Products|Solutions|Pipe
africa|business|cranes|engineering|fittings|flow-company|materials-handling|pipe-company|pipes|project|roads|services|steel|stewarts|stewarts-lloyds|surface|system|systems|transport|trucks|valves|water|flow-industry-term|products|solutions|pipe

Manufacturer secures large high pressure valve order

A pile of pipes behind a fence covered in a Denso Ultraflex 1250 tape, a specially formulated anti-corrosion system.

IN THE GROOVE The grooved joint pipe and coupling system supplied by Stewarts & Lloyds spanned 24 km

30th June 2023

By: Halima Frost

Senior Writer

     

Font size: - +

Steel, tube and engineering product supplier Stewarts & Lloyds’ Pipes & Fittings branch has secured a multimillion-rand order for high pressure valves with the Chris Hani district municipality, in the Eastern Cape, to complete the newly laid bulk water supply network to the local community of Mnyolo.

The contract entails the supply of 60 bar pressure rated air valves, scour valves and isolation valves as part of the larger bulk water supply system, and follows the initial, successful supply of a 24-km-long grooved joint pipe and coupling system that flows close to the nearest town Ngcobo, in the Eastern Cape.

The first system included the pipes and couplings supplied by Stewarts & Lloyds Pipes & Fittings, as well as reservoirs and tanks that were supplied by additional contractors.

“The pipes are South African National Standards 62 welded and galvanised steel pipes of various pressure ratings, which were needed to accommodate fluctuations in flow pressure,” says Stewarts & Lloyds Pipes & Fittings business development manager Chris Swart.

The pipes were supplied in three pressure ratings of 20 bar to 35 bar, 40 bar to 50 bar, and 51 bar to 55 bar, to meet different pressure requirements, based on the terrain and the elevation of the pipeline.

The pipeline traverses a multitude of topographies above and below the surface at various points in the system.

Stewarts & Lloyds Pipes & Fittings was also responsible for the supply of the mechanical pipe joining Victaulic QuickVic flexible couplings, which is noteworthy, given the pressure ratings of the pipeline.

Stewarts & Lloyds Pipes & Fittings is an approved water solutions distributor of Victaulic products in South Africa.

Combating Corrosion

“The ground in the area was found to be very corrosive, which meant that the pipes had to be adequately protected to prevent any erosion or degradation over their life span,” says Swart.

Therefore, the pipes, once supplied from the Stewarts & Lloyds Pipes & Fittings facility in Alrode, Gauteng, were galvanised and then wrapped with Denso Ultraflex 1250 tape – a specially formulated anti-corrosion system.

The multipurpose, surface-tolerant Ultraflex tape with a polyvinyl chloride backing and polymer-modified adhesive compound for steel pipes, fittings and structural steel is used as an alternative to spray-on corrosion systems.

Denso Ultraflex 1250 spans the length of the pipe, from coupling groove to coupling groove, and once the coupling has been positioned and tightened, Densyl Mastic Blanket is used to wrap the coupling and joint to prevent any corrosion at the joints.

“We had the opportunity to train the local workforce working on the pipeline on how to install and align the pipes, correctly secure and tighten the Victaulic couplings, and how to use the Densyl Mastic Blanket,” he notes.

Owing to the isolated area in which the project is situated, the advantage of upskilling the workers is beneficial to the local community.

The workers were awarded a competency certificate, which should enable them to be “more relevant” in the workforce, with employment “rather lacking” in the rural areas.

Swart says one of the challenges faced was materials handling, where the trucks and cranes used to carry and offload the pipes battled to gain access to the site.

“Moving that many trucks across undeveloped roads or pathways, often during wet weather, meant that some became stuck. However, after careful planning and liaising with the transport provider, the issue was easily mitigated,” he says.

Additionally, the supply of materials and subsequent value-add services was not always easily accessible, owing to a countrywide strike and a consequent slowdown in steel manufacture.

“We managed to circumvent this challenge by rallying with our suppliers and clients to make the project a resounding success,” Swart concludes.

Edited by Nadine James
Features Deputy Editor

Comments

Latest News

A Sasol sign at its Secunda plant
Sasol reports 34% decline in half-year profit
Updated 14 minutes ago By: Reuters

Showroom

Booyco Electronics
Booyco Electronics

Booyco Electronics, South African pioneer of Proximity Detection Systems, offers safety solutions for underground and surface mining, quarrying,...

VISIT SHOWROOM 
SAIMC (Society for Automation, Instrumentation, Mechatronics and Control)
SAIMC (Society for Automation, Instrumentation, Mechatronics and Control)

Education: Consulting with member companies to obtain the optimal benefits from their B-BBEE spending, skills resources as well as B-BBEE points

VISIT SHOWROOM 

Latest Multimedia

sponsored by

Magazine round up | 23 February 2024
Magazine round up | 23 February 2024
23rd February 2024
Resources Watch
Resources Watch
21st February 2024
Photo of Martin Creamer
Major hydrogen economy developments in SA
21st February 2024

Option 1 (equivalent of R125 a month):

Receive a weekly copy of Creamer Media's Engineering News & Mining Weekly magazine
(print copy for those in South Africa and e-magazine for those outside of South Africa)
Receive daily email newsletters
Access to full search results
Access archive of magazine back copies
Access to Projects in Progress
Access to ONE Research Report of your choice in PDF format

Option 2 (equivalent of R375 a month):

All benefits from Option 1
PLUS
Access to Creamer Media's Research Channel Africa for ALL Research Reports, in PDF format, on various industrial and mining sectors including Electricity; Water; Energy Transition; Hydrogen; Roads, Rail and Ports; Coal; Gold; Platinum; Battery Metals; etc.

Already a subscriber?

Forgotten your password?

MAGAZINE & ONLINE

SUBSCRIBE

RESEARCH CHANNEL AFRICA

SUBSCRIBE

CORPORATE PACKAGES

CLICK FOR A QUOTATION







sq:0.157 0.192s - 91pq - 2rq
Subscribe Now