Plastic welding: Australian asset owners’ service comparison

This guide helps Australian asset owners compare two plastic welding providers for damaged tanks, pipe systems and liners. It covers how each assesses repairability, where the work happens, what testing evidence to request and which commercial terms to settle before work starts.

Compare Golden West Plastics and Perspex Online/P&M Plastics

Golden West Plastics emphasises material identification and on-site tank repairs; Perspex Online/P&M Plastics describes workshop and site repairs with more detailed inspection and testing options.[3][6] Before choosing, establish repairability, work location and the evidence needed to accept the asset back into service. These are provider descriptions, not independent validation of repair quality.[3][6]

Golden West Plastics

• Repairability assessment: Golden West says material identification should precede the repair decision. Its described approach covers thermoplastics; additives such as glass fibres can make some engineered plastics unsuitable for standard plastic welding.[3]
• Workshop or site arrangements: Golden West expressly lists on-site tank repairs. Confirm attendance at your location and whether workshop repair is an alternative.[3] Golden West is based in Perth, WA, and ships orders Australia-wide through logistics companies; that is not a commitment to attend sites outside WA.[7]
• Acceptance evidence and warranty disclosure: Request the inspection or test package, acceptance thresholds, warranty terms and onsite-repair service boundary in writing.

Perspex Online/P&M Plastics

• Repairability assessment: Perspex Online says it assesses damage, identifies the plastic and uses matched material when repairing tanks, pipe systems and liners.[6]
• Workshop or site arrangements: It offers workshop or on-site repairs and Australia-wide shipping; shipping coverage is not a commitment to site attendance.[6]
• Acceptance evidence and warranty disclosure: It describes inspection of completed assemblies, conditional testing options and test reports on request.[6] Ask it to confirm numerical acceptance criteria, warranty terms and an on-site geographic boundary.

Establish the polymer, damage and operating duty

Perspex Online lists PP, HDPE, PVC, PVDF and PE, with matched welding material and polymer-specific settings.[6] A listed polymer is not approval of a particular damaged asset. Plastic Repair’s broad “any plastic” claim spans several repair methods, including thermoset and fibreglass repair—not a guarantee every plastic is weldable.[2]

For assessment, send the asset identity, available material records, damage photographs, dimensions, drawings and service history. Perspex Online explicitly accepts drawings, dimensions or a project description.[6]

Ask how the assessor will identify the material and whether they need pressure, temperature, chemical identity and concentration, loading or prior-exposure details. Neither provider publishes the operating data it needs for an assessment.[3][6] Resolve those requirements before accepting a repair recommendation.

Choose repair or replacement after assessment

Perspex Online says cracks, joint failures and damaged fittings in existing HDPE, polypropylene and PVC tanks or vessels can often be welded rather than replaced—not that every damaged asset is repairable.[6] Golden West’s material limitations remain relevant even when the damage appears localised.[3]

Ask both providers to confirm any applicable maximum crack sizes, allowable wall loss, age limits or remaining-life thresholds.[3][6]

Ask the assessor to explain the proposed repair scope, material limitations, intended operating conditions and reasons for recommending repair or replacement. Resolve gaps in suitability before authorising work rather than treating a general repair capability as approval for the asset.

Confirm site coverage and preparation duties

Ask each shortlisted provider to confirm attendance at the actual state or territory, postcode and work location for the specified asset—not simply its ability to accept the asset for repair.

Other providers offer geographic cross-checks, but their coverage descriptions need clarification:

• Plastic Welding Tasmania: states “Tasmania and interstate”; ask which repairs involve site attendance rather than workshop delivery.[1]
• Welding Services: states “Sydney Wide”, and its contact page says “We'll come to you”; confirm attendance for the particular asset and location.[4][8]
• Acrilix Plastics: states “Servicing Australia Wide” from Welland, SA; confirm whether the proposed repair requires workshop delivery.[5]

Ask Golden West and Perspex Online to confirm preparation and access responsibilities.[3][6] Agree who supplies, arranges and pays for:

• Preparation: draining, cleaning, decontamination, isolation and shutdown.
• Site access: permits, confined-space controls, power, ventilation, lifting, scaffolding and physical access, where applicable.
• Workshop logistics: removal, transport, unloading and reinstatement.
• Readiness: confirmation the asset and work area are ready, including any evidence the provider needs before attending.

Use these as questions for the proposed job, not a universal checklist of legal requirements.

Specify inspection, testing and acceptance evidence

Separate routine inspection from tests requiring an explicit specification or request. Perspex Online’s workflow includes checking completed assemblies for weld integrity and structural soundness before dispatch or pickup.[6] Its testing options are not a package promised with every repair:

• Offered methods: visual inspection, spark testing for tank liners and destructive bend testing of sample coupons.[6]
• Where specified: pressure testing is available for tanks and vessels.[6]
• For critical fabrications: Perspex Online describes destructive bend and tensile testing of sample welds.[6]
• On request: test reports are available for quality-critical work.[6]

Agree the acceptance plan in writing. Ask which tests apply, what constitutes a pass, who witnesses testing and signs off return to service, what happens after a failure, and which reports you will receive.

Perspex Online says structural welding follows Australian standards and its welders are trained and tested to DVS standards.[6] Ask it to identify standard numbers, editions and certification details, and confirm the inspection plan, hold points, retest rules and sign-off documentation for the job.[6] Request qualification evidence relevant to the work rather than treating the general standards statement as proof of asset-specific acceptance.

What to confirm with each provider

Golden West offers a no-obligation free appraisal; do not assume this includes a site visit or testing.[3] Ask Golden West and Perspex Online for comparable charge schedules, cancellation terms and confirmation of whether repaired assets retain manufacturer certification.[3][6]

Send both providers the same asset information and request a written proposal covering:

• Total cost: labour, materials, attendance, travel, transport, preparation, testing, reports and reinstatement where relevant.
• Commercial terms: deposits, payment milestones, quote validity, cancellation and rescheduling charges—and what is payable if the asset proves unrepairable.
• Warranty accountability: duration, covered workmanship, exclusions, who assesses a failure and available remedies.
• Certification: whether repair affects manufacturer certification and who can confirm its status.
• Commissioning scope: the repair-versus-replacement recommendation, work location, allocated preparation duties, acceptance criteria and named sign-off responsibility.

Golden West explicitly offers appraisal, material identification and on-site tank repairs.[3] Perspex Online gives more detail about inspection and optional testing.[6] Choose on the asset-specific proposal, not the breadth of the service listing: greater published detail does not independently establish superior workmanship.[3][6]

References

1. Plastic Welding Services | HDPE Fabrication, Repairs & More (plasticweldingtasmania.com.au)
2. Plastic Repair – Industrial & Domestic Plastic Welding (plasticrepair.com.au)
3. Plastic Welding & Repairs – Golden West Plastics (goldenwestplastics.com.au)
4. Plastic Welding – Welding Services & Engineering (weldingservices.com.au)
5. Plastic Welding Services (acrilixplastics.com.au)
6. Plastic Welding Services | Perspex Online (perspexonline.com.au)
7. About Golden West Plastics (goldenwestplastics.com.au)
8. CONTACT – Welding Services & Engineering (weldingservices.com.au)