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Industrial welding · PE/PP/PB pipes· Ploiești, Prahova· 2025

4 butt-welding machines for PE pipes up to Ø 630 mm,
delivered to SC ARS INDUSTRIAL SRL Ploiești.

After the mobile photovoltaic plant that powers the electric Tracto Grundodrill drilling rig, ARS INDUSTRIAL closed the operational chain of water-sewer crossings with a complete UZINEX welding package: two butt-welding machines for PE/PP/PB pipes (HW500 and HW630), an electrofusion unit with a built-in recorder (WP100K) and a separate digital recorder (WPD20) for ISO/DVS traceability on every weld.

Ø 630
maximum diameter · mm
4 mach.
complete package
60 months
UZINEX warranty
Package delivered · overview
  • 01
    HW630 · Ø 315 — 630 mm
    Ø 315-630 mm
  • 02
    HW500 · Ø 200 — 500 mm
    Ø 200-500 mm
  • 03
    WP100K · Ø 25 — 1000 mm
    Ø 25-1000 mm
  • 04
    WPD20 · Compatible with HW500 + HW630
    ISO/DVS traceability
Integrated UZINEX system · ISO and DVS standards met end to end · 60-month warranty.
01 / Client profile · public ONRC data
Name
SC ARS INDUSTRIAL SRL
VAT / CUI
16515321
Registration no.
J2004001267297
Date of incorporation
15.06.2004
Location
Ploiești, Prahova County
Turnover
10,509,758 RON
Main activity
Water-sewer · infrastructure crossings
Purchase decision-maker
Popescu Minel
Delivery year
2025
Number of machines
4 machines · complete package
Supplier & integrator
UZINEX · Iași
Standards met
ISO · DVS · EU-compatible
02 / Why 4 machines · closing the water-sewer chain

ARS INDUSTRIAL didn't want a machine. It wanted a complete system.

In the previous case with UZINEX, ARS INDUSTRIAL bought a mobile photovoltaic plant to power the 100% electric Tracto Grundodrill horizontal drilling rig — the drilling part of the crossing. Logically, after horizontal drilling under a road and pulling the PE pipe through the crossing, the pipe ends must be welded correctly and tightly, with documented traceability for audit.

ARS evaluated two options: outsourcing the butt welds to third parties (with significant monthly costs over crossing campaigns) or internalizing the capability by buying a package of its own equipment. It chose internalization — and asked for a package that covers the entire range of diameters found on water-sewer sites, not a single "basic" machine.

The final configuration: two mechanical butt-welding machines covering the 200-630 mm diameter range with overlap (HW500 + HW630), an electrofusion unit that extends the range to 25-1000 mm for fittings (WP100K), and a separate digital recorder (WPD20) that records every welding cycle in line with ISO and DVS for a complete audit.

The 4 machines work together as a system: the HW units for mechanical butt welding, the WP100K for electrofusion fittings, the WPD20 for documentation. No machine is redundant — each solves a layer of the process.

03 / Equipment delivered · detailed specs
01 / HW630
UZINEX

Butt welding of PE/PP/PB pipes · Ø 315-630 mm

Operating diameter
Ø 315 — 630 mm
Power / supply
9.6 kW plate · 1.5 kW trimmer · 1.1 kW hydraulic
Weight / delivery
560 kg · 3 components

The largest machine in the package. A 9.6 kW heating plate with electronic control, a 1.5 kW trimmer for precise facing of the ends, a hydraulic station for uniform pressure. For large-diameter water-sewer trunk pipes.

02 / HW500
UZINEX

Butt welding of PE/PP/PB pipes · Ø 200-500 mm

Operating diameter
Ø 200 — 500 mm
Power / supply
6.5 kW plate · 1.1 kW trimmer · 1.1 kW hydraulic
Weight / delivery
389 kg · 3 components

Covers the range of medium diameters found on the network branches. The same 3 modular components as the HW630 — carriage, hydraulic, trimmer — for versatile use in open sites or directly in excavations.

03 / WP100K
UZINEX

Electrofusion unit with a built-in recorder · Ø 25-1000 mm

Operating diameter
Ø 25 — 1000 mm
Power / supply
10 kW · 380V ±20% · 40-65 Hz
Weight / delivery
Integrated recorder · 500 cycles stored

An automatic machine for PE/PP electrofusion fittings with a working range from 25 mm to 1000 mm. Three fully automatic operations: connection, barcode scanning to set the parameters, weld start. Automatic compensation of the output energy depending on the ambient temperature.

04 / WPD20
UZINEX

Digital butt-welding recorder · ISO/DVS traceability

Operating diameter
Compatible with HW500 + HW630
Power / supply
Imported pressure sensor · IP43
Weight / delivery
20 kg · 48×20×40 cm · 240 cycles

A digital recorder that monitors in real time and fully stores the welding cycle, in line with ISO and DVS. It guides the operator through all the stages, ensuring complete traceability. The operator prints the report on site or exports it via USB to a PC for internal audit.

04 / How it works · animated diagrams

Three animated diagrams explain the PE butt-welding process (4 phases), how the two UZINEX contracts with ARS link into a complete operational chain (mobile PV + Grundodrill + welding + traceability), and how the data flow from the WP100K / WPD20 produces audit-ready reports.

PE pipe butt-welding process diagram — four phases: facing the ends with a trimmer, heating with a 9.6 kW plate, controlled hydraulic pressure and cooling for a solid fusion in line with ISO and DVSBUTT WELDING · ISO / DVSPE / PP / PB · Ø 200 — 630 mm · hydraulic controlPE pipe · Ø 630 mm9.6 kWfixed← hydraulicPHASES:1. facing2. heating3. pressure4. cooling / fusionUZX-WELDREV. AHW630ARS-002ISO/DVSPE/PP/PB
Diagram 1 · the PE welding process

Four automated phases: facing the ends with a trimmer, heating with the 9.6 kW plate, controlled hydraulic pressure and a solid fusion. ISO and DVS standards respected end to end.

ARS INDUSTRIAL operational chain for water-sewer crossings — an electric Grundodrill drills horizontally under a road, the PE pipe is pulled through the crossing, the ends are butt-welded with HW630 / HW500, and the welding cycle is recorded for ISO/DVS traceabilityOPERATIONAL CHAIN · WATER-SEWERtwo UZINEX contracts working togetherexisting roadTRACTOGRUNDODRILL① horizontal drilling[mobile PV case]② pulling the PE pipe through the crossingUZINEX HW630butt welding③ welding the PE ends[this case]④ WP100K + WPD20ISO/DVS traceability · USB reportUZX-CHAINREV. APV + WELDINGARS-001/002CHAINFULL
Diagram 2 · the ARS operational chain

The two UZINEX contracts with ARS work together: the mobile PV plant powers the electric Grundodrill that makes the crossing, and the HW630 / HW500 welds the PE pipe after it's pulled through. Full traceability on WP100K + WPD20.

Welding-cycle traceability diagram — the WP100K electrofusion unit with a built-in recorder and the WPD20 recorder store the parameters of each weld (pressure, temperature, duration), which are exported to USB or printed on site for ISO and DVS auditTRACEABILITY · ISO / DVS / AUDITWP100K (500 cycles) + WPD20 (240 cycles) · USB exportUZINEX WP100KCYCLE #347T:215°C · 38 A · 0:42USB · barcode scanner10 kW · 380V · IP43electrofusion 25 → 1000 mmcycle dataWPD20REC · #240P / T / dur. · okrecorder · 20 kg · IP43exportUSB stickprint on siteREPORTISO + DVSaudit ready500 + 240 cycles storedbarcode scanningambient-temp compensationUZX-TRACEREV. AWP100K+WPD20ARS-002AUDITISO/DVS
Diagram 3 · ISO / DVS traceability

Every welding cycle is stored: 500 cycles in the WP100K + 240 in the WPD20. USB export or print on site. ISO/DVS reports ready for audit, with no manual reconstruction.

05 / How it unfolded · from the first discussion to commissioning
  1. 01
    Context · 2025

    ARS INDUSTRIAL closes the water-sewer crossing chain

    After the previous UZINEX contract for the mobile photovoltaic plant that powers the electric Tracto Grundodrill drilling rig, ARS INDUSTRIAL needed to close the operational chain: after horizontal drilling under a road and pulling the PE pipe through the crossing, the pipe ends must be welded correctly, with complete traceability, in line with ISO and DVS.

  2. 02
    Package configuration

    4 complementary machines for the full range of diameters

    We configured a package that covers the entire range of diameters found on water-sewer sites: the HW500 for medium pipes (Ø 200-500 mm), the HW630 for large pipes (Ø 315-630 mm), the WP100K for electrofusion of fittings (Ø 25-1000 mm) and the WPD20 as a digital recorder for ISO/DVS traceability on all the welds made.

  3. 03
    Production & delivery

    A modular package delivered in compact components

    The HW500 (389 kg) and HW630 (560 kg) machines are delivered in 3 separate components each — carriage, hydraulic station, trimmer — packed compactly for easy transport and on-site installation. Reducers included to adapt to all the diameters in the ARS operating range.

  4. 04
    Commissioning

    Transport + commissioning included · operator training

    As per the UZINEX package, transport and commissioning were free. At the ARS premises we carried out operator training on all 4 machines, focused on the ISO/DVS fusion procedure and the correct use of the WPD20 recorder for auditing.

  5. 05
    Post-delivery service

    60-month warranty · 48h intervention · 24/7 support

    The standard UZINEX service package: 60-month warranty, physical intervention within 48 hours anywhere in the country, lifetime software updates, 24/7 phone support and video assistance for fast troubleshooting. For ARS, that means operational continuity over long crossing campaigns.

06 / Results at delivery · what we can measure today
Ø 25-1000
Full range covered · mm
From small electrofusion fittings (25 mm on secondary networks) to industrial trunk pipes (1000 mm). No diameter ARS can't weld in-house.
4 machines
Complementary package delivered
HW630 + HW500 + WP100K + WPD20. Covers both mechanical butt welding and fitting electrofusion, with digital traceability on every cycle.
60 months
UZINEX warranty · 48h intervention
Five years of warranty for all 4 machines, with physical intervention anywhere in the country within 48 hours. Free lifetime software updates, 24/7 technical phone support.
ISO + DVS
Audit-compliant traceability
All joints comply with the international fusion procedures for thermoplastics (ISO, DVS). A digital report exportable to USB or printed on site — audit-ready, with no manual reconstruction.
740
Cycles stored · WP100K + WPD20
500 cycles in the WP100K + 240 in the WPD20 = 740 traceable welds without erasing. Enough for a complete crossing campaign with no intermediate download.
€0
Transport · commissioning · training
Standard UZINEX package: free transport, included commissioning, operator training, lifetime software updates. The total cost of the offer = the cost of the equipment.
07 / Post-delivery service · UZINEX package included

Operational continuity over long campaigns.

For a client that works in continuous crossing campaigns, downtime on a welding machine means sections of PE pipe left unclosed on site — with a direct impact on planning and on the relationship with the project beneficiary.

Warranty
5 years for all 4 machines · OEM parts · labour · travel included.
60 months
Physical intervention
Anywhere in the country. A UZINEX technician dispatched to the site or premises, with a pack of critical spare parts.
< 48h
Phone support
A dedicated line for clients with active service. Guided diagnostics to solve minor problems in real time.
24/7
Software updates
The WP100K and WPD20 receive the manufacturer's updates for new audit-reporting standards free of charge.
Lifetime
Video assistance
For non-standard problems, the UZINEX engineer guides the operator over video until it's resolved.
Fast troubleshooting
Transport + commissioning
Transport from the warehouse to the client's premises and commissioning with operator training included as standard in the equipment price.
Included · €0
08 / Calculator · outsourcing vs. own fleet

Replicate the ARS logic for your case. Enter the average price per outsourced weld in your area, the typical volume per campaign and the cost of your own equipment. See in how many months it pays for itself through the pure savings of avoided outsourcing.

Outsourced welding vs. own equipment · payback estimate

What does it cost you to weld outside?

120 EUR
40 pcs
28,000 EUR
5 years
Estimated result
Outsourcing cost / month
4,800 EUR
what ARS would pay third parties for welding
Own-equipment payback
5.8 months
Net saved over 5 years
260,000 EUR
after covering the investment
I want an offer for my fleet

Indicative calculation on direct outsourcing only. It doesn't include quality control, ISO/DVS traceability, logistical delays or the defect risk on a weld made by a third party with no digital report.

09 / ARS INDUSTRIAL · the first UZINEX contract

Butt welding is the second ARS contract with UZINEX — the first was the mobile photovoltaic plant.

In the previous contract, UZINEX delivered ARS Romania's first mobile photovoltaic plant (24 kW of panels / 52 kWh storage / 24 kW inverter, worth €52,000 + VAT via public tender) that powers the electric Tracto Grundodrill horizontal drilling rig. The combination of the two contracts covers the entire water-sewer crossing chain: drilling with 100% solar power, pulling the pipe, welding the ends with ISO/DVS traceability.

10 / Frequently asked questions · PE pipe butt welding

What PE pipe diameters can the package delivered to ARS INDUSTRIAL weld?

+

The package covers the entire range found on water-sewer sites: the HW500 works between Ø 200-500 mm, the HW630 between Ø 315-630 mm, and the WP100K for electrofusion fittings from Ø 25 to Ø 1000 mm. The HW500/HW630 overlap between 315-500 mm allows choosing the right machine depending on the transport weight on site.

What plastic materials can be welded with the HW630 and HW500 machines?

+

Polyethylene (PE), polypropylene (PP) and polybutene (PB) — the standard thermoplastics for water, gas and industrial-infrastructure networks. The machines ensure tight, durable joints, compliant with the international ISO and DVS procedures for thermoplastic fusion.

How does traceability work with the WP100K and WPD20?

+

Each welding cycle is stored automatically: pressure, temperature, duration parameters, operator identification, pipe identification via barcode scanning. The WP100K stores 500 cycles internally (plus USB export as Excel), the WPD20 stores 240 cycles. On site, the operator can print the report directly or export it digitally to a PC for the audit archive. All data is in ISO/DVS-compliant format, ready for audit with no manual reconstruction.

What post-delivery service does UZINEX offer for this equipment?

+

The standard package: a 60-month warranty for all components, free transport and commissioning included, physical intervention within 48 hours anywhere in the country, free lifetime software updates, 24/7 phone support and video technical assistance for fast troubleshooting. For clients with high volumes or continuous campaigns (like ARS INDUSTRIAL), we offer subscription preventive-maintenance contracts.

Can I use the HW630 directly in the excavation, not just in the workshop?

+

Yes, that's exactly what it's designed for. The machine is intended for versatile use — both on open sites and directly in excavations or crossing pits. The robust build (560 kg for the HW630) offers stability even in harsh site conditions, and the modularity in 3 components (carriage, hydraulic, trimmer) allows controlled lowering into the excavation without heavy machinery.

Is the equipment compatible with the technical requirements for EU-funded projects?

+

Yes. All 4 machines comply with the international fusion procedures for thermoplastics (ISO, DVS) — exactly the standardized requirements that European funders impose for water-sewer infrastructure projects. The WPD20 generates audit-compliant digital reports that satisfy the documentation required by conformity-assessment bodies and EU auditors.

What electrical supply is required for the HW630 and HW500 machines?

+

All components run on 380V three-phase / 50 Hz. For the HW630 the maximum total power is around 12.2 kW (9.6 + 1.5 + 1.1), and for the HW500 it's 8.7 kW (6.5 + 1.1 + 1.1). That means the machines can be powered from any standard 380V industrial connection or directly from the UZINEX mobile photovoltaic plant (24 kW) that ARS uses for the electric Grundodrill — a convenient synergy on sites without a grid connection.

Why did ARS INDUSTRIAL choose all 4 machines and not just one?

+

Clear operational logic. The HW500 + HW630 cover the entire range of pipe diameters found on water-sewer sites (200-630 mm). The WP100K handles the electrofusion of fittings (elbows, T-pieces, reducers) over even wider ranges (25-1000 mm). The WPD20 ensures traceability on all the welds made with the HW500/HW630, completing the audit documentation. No machine is redundant — each solves a layer of the process.

Credit where it's due · the second contract

ARS INDUSTRIAL: a mature operator that internalizes critical capabilities.

For a B2B industrial supplier, the second contract from the same client is the real metric — not the first. ARS voted its trust in UZINEX with its wallet, a second time.

2 → 6
UZINEX machines across 2 contracts
The mobile PV plant (contract 1) + 4 welding machines (contract 2). Two consecutive strategic purchases in 2025.
20+ years
uninterrupted market presence
Incorporated on 15 June 2004, ARS has operated for over 20 years in the water-sewer segment. Proven stability on infrastructure contracts.
Package
an internalization strategy
It chose to buy a complete system instead of outsourcing critical parts. A mature-operator decision, not an opportunistic subcontractor's.
Ø 25-1000
total diameter coverage · mm
It asked for a package covering the entire range of diameters — not a single minimal machine. Long-term planning logic, not just the current contract.
ISO + DVS
professional standards
It demanded audit-ready documentation and traceability from the start. It works at the level required by European funders, not the local legal minimum.
Own spec
internal technical competence
It drew up the tender specification for the PV plant itself. A conversation between equals — it knew exactly what equipment it needed on site.