Barcode Interpretation for Electrofusion Poly Welding

Barcode Interpretation for Electrofusion Poly Welding

This morning, we received an urgent call from a customer out on site who wanted to double-check the weld time for electrofusion poly welding a 63mm socket. He was surprised to learn that it only takes 65-70 seconds. It’s best to double-check, we say, so off we went to the warehouse to check an EF socket on the shelf. Sure enough, 65 seconds is all it requires.

Of course, this varies for different-sized sockets. So, the best way to check is the barcode of the EF fitting itself, which follows the manufacturer’s recommendation and the electrofusion welding procedure set by ISO 13950.

How to read an electrofusion poly welding fitting barcode 

The barcode has 24 numbers, most of which you can interpret by using an industry-wide method.

Numbers:

  • 1-8 = Manufacturers mark
  • 9-11 = Dimension (eg 63mm)
  • 13-14 = Fusion current in voltage
  • 16-18 = Electrical resistance in ohms
  • 19-21 = Fusion time in seconds
  • CT = Cooling Time

Barcode with traceability information displayed for interpretation of barcodes on electrofusion fittings

Watch our electrofusion welding demonstration to see the barcode scanned during a live weld. Or call us for a full production information sheet.

Typical electrofusion weld times by size

This is a general reference only. Always scan the barcode on the fitting itself, that’s the authoritative source and follows the manufacturer’s exact specification for that batch.

EF fitting size

Typical fusion time

Typical cooling time

25 mm

25–35 seconds

5–10 minutes

32 mm

30–40 seconds

10 minutes

50 mm

45–55 seconds

15 minutes

63 mm

65–70 seconds

20 minutes

90 mm

90–110 seconds

25 minutes

110 mm

120–140 seconds

30 minutes

 

Times shown are indicative for standard PE100 electrofusion couplers and vary by manufacturer, ambient temperature, and fitting type (coupler vs socket vs branch saddle). The barcode is always the correct reference.

The Purpose of a Barcode

In Electrofusion poly welding, you must strictly follow Electrofusion (EF) welding parameters to ensure a successful joint.

Feature

Manual EF welding

Automatic EF welding (barcode scan)

Data entry

Manual, operator enters parameters

Automatic, barcode scanner reads the fitting

Source of data

Manufacturer’s instructions, checked by operator

Barcode on the fitting, following ISO 13950

Risk of parameter error

Higher, operator can input wrong voltage, time, or dimension

Very low, parameters locked to the specific fitting

Traceability

Depends on manual record-keeping

Data logged automatically by the control unit

Best for

Backup / emergency where barcode is damaged

Standard production welding (all routine jobs)

Control units should operate with barcode marked fittings according to ISO 13950, with a maximum output of 48 volts. Control units should include safety devices to prevent voltages greater than recommended by the manufacturer. The safety device should operate in less than 0.5 seconds. The user should check the suitability of the control unit for use with the fitting supplier. (REF: PIPA Recommendations for Electrofusion Welding Specifications)

Looking for an electrofusion welder? Browse the APS electrofusion welding machine range.

 

Frequently asked questions

What is ISO 13950? ISO 13950 is the international standard that governs the barcode marking system used on electrofusion fittings. It specifies how weld parameters (fusion voltage, resistance, time, and cooling time) are encoded into the 24-digit barcode so any compliant electrofusion welder can scan the fitting and load the correct settings automatically. Reputable European fitting manufacturers all comply with ISO 13950.
Do I always need to scan the barcode, or can I enter parameters manually? Automatic scanning is the standard for production HDPE electrofusion welding, it removes operator input error and locks the parameters to the specific fitting. Manual entry is a backup mode used only when a barcode is damaged, illegible or missing. If you’re welding manually, you need the manufacturer’s data sheet for that fitting on hand.
Do all electrofusion welding machines work with all fittings? Most modern electrofusion welders that scan ISO 13950 barcodes will work with fittings from most compliant manufacturers, but it’s worth confirming compatibility before a project. The PIPA recommendations note that the user should check the suitability of the control unit for use with the fitting supplier, different manufacturers may use slightly different barcode structures.
Why is cooling time as important as fusion time? The cooling time listed on the barcode (CT) is when the melted PE crystallises and reaches full joint strength. Moving, pressurising, or handling the joint before cooling is complete can crack the fusion zone and cause the joint to fail later under pressure. The barcode gives both times because both matter.

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