90-315mm Hydraulic Welder

A hydraulic machine for the 90mm to 315mm fusion range

The 90-315mm welder joins HDPE pipe across that range, with hydraulics supplying the clamp force. Heavier pipe, changing wall thickness with SDR, and a joint that must hold its line while the heater plate moves in and out of the machine call for this.

The frame, clamps and hydraulic system are arranged for pipe and fitting work on site, where sections may be cut, cleaned and fused in plain ground conditions. The welder suits crews that need a machine for pressure pipe work, with room for a facer, heater plate and the kind of clamp travel that matches different diameters without forcing the joint.

• Pipe size range: 90mm to 315mm
• Fusion method: hydraulic butt-fusion
• Typical work: straight pipe joins and socketed butt-fusion fittings where the job calls for them
• Controls: clamp movement, pressure build-up and hold through the weld cycle

How the weld cycle runs

Moving the joint early distorts the bead, so pressure is held until the weld sets. The operator reads the pipe, the SDR and the machine settings together before setting the weld.

• Facing for square, even pipe ends
• Heating on a clean, stable plate
• Changeover without dragging the softened ends
• Controlled fusion pressure for the pipe wall and SDR in use
• Cooling under clamp until the joint has set

Where this 90-315mm welder fits in the field

The 90-315mm welder suits jobs that need finer control than a small manual set, without a much larger fusion frame.

The same unit can move between trench work, pump lines, yard fabrication and pipe prep areas. It is practical for sites where the weld book needs to show pipe size, SDR, heating time, pressure and cooling time for each joint, and where bead inspection is part of the close-out process.

• Water supply and reticulation lines
• Larger diameter pipe for plumbing and site fabrication

Fitting needs, setup and site handling

Because this is a hydraulic welding machine, the job planning has to include the machine frame, hydraulic unit, heater plate, facer and the clamps that suit the pipe size. Awkward lengths near a trench edge need a stable base and room to load pipe straight into the 90-315mm frame.

Power is part of the setup for the hydraulic system and heater plate, so the site must be ready for the correct supply arrangement. Collection inspections on hire units cover hoses, heater face, clamp travel, facer blades and hydraulic leaks. Small marks on the heater face or worn clamp surfaces leave marks in the weld bead.

• Confirm the power arrangement for the hydraulic and heating components
• Inspect hoses, fittings and clamp action before use
• In coastal humidity, make sure pipe ends stay clean and dry

Servicing that gets the machine prepared for the following weld

After each shift, clean the machine and check the hoses. Shavings are cleared from the facer and grit from the clamp rails after each shift. In wet weather or near the coast, a light film of moisture on the steel parts can lead to surface corrosion if the machine is put away dirty.

For hire work, checks should cover the hydraulic system, alignment, plate condition and the cutting edges on the facer. A tired facer gives a rough end and a ragged bead. Hard trench use is followed by a pressure test before re-hire.

• Clean heater plate surfaces after use
• Remove swarf and plastic residue from the facer
• Check clamp faces and alignment points
• Watch hydraulic oil condition and hose wear
• Keep it as dry as you can to help prevent rust and dirt from building up

Checks to make before ordering this unit

When a crew asks for a 90-315mm hydraulic welder, the useful details are usually the pipe range, the SDR series, the expected site type and whether the machine is for purchase or hire. Tell us if the crew needs startup help on the first day of the shift.

For an order or fleet plan, tell us the diameter coverage you need and whether the machine will move between sites. Transport and collection are planned around the pipe load.

• Pipe size range and SDR series
• Hire or purchase requirement