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Plastic welding depends on steady heat, clean airflow, and the right nozzle shape for the surface you are joining. The SWIGRANCE Hot Air Welding Nozzles 3Pcs/Set gives you three flat-tip nozzle options for common hot air plastic welding jobs. This set includes straight, 90-degree, and 120-degree narrow flat nozzles, so you can choose the angle that fits your work area. The main strength is its stainless steel build and 20mm flat mouth, while the main limitation is compatibility, since you need a 32mm hot air plastic welder outlet for proper fit.
Quick Verdict
Rating: 8.3/10, Recommended with caveats
Best For: DIY users, repair techs, and plastic welding users who need 20mm flat nozzles for a compatible 32mm hot air welder.
Bottom Line: This SWIGRANCE nozzle set is a useful add-on if you weld PVC flooring, membranes, tarpaulins, pool liners, or similar plastic materials. Check your heat gun outlet size first, because the 32mm inner diameter will not fit every hot air welder.
| Specification | Detail |
|---|---|
| Brand | SWIGRANCE |
| Product Type | Hot air plastic welding nozzle set |
| Count | 3 nozzles |
| Nozzle Designs | Straight, 90-degree, and 120-degree narrow flat nozzles |
| Flat Mouth Width | 20mm |
| Inner Diameter | 32mm |
| Material | Stainless steel |
| Finish | Polished stainless steel finish |
| Compatibility | Made for compatible hot air plastic welder guns with a 32mm outlet, including many 1500W and 1600W plastic welding guns |
| Best Use | Plastic welding, PVC flooring, waterproof membranes, roofing, pool liners, tarpaulins, bumpers, and water tanks |
| Safety Note | Confirm fit before use and follow your hot air welder manual for temperature, airflow, and safe handling. |
What Is the SWIGRANCE Hot Air Welding Nozzles 3Pcs/Set?
The SWIGRANCE Hot Air Welding Nozzles 3Pcs/Set is a replacement accessory kit for hot air plastic welder guns. The set includes three narrow flat nozzles: one straight nozzle, one 90-degree nozzle, and one 120-degree nozzle. Each nozzle has a 20mm flat mouth and a 32mm inner diameter.
These nozzles help direct hot air across plastic welding seams. The flat-mouth design spreads heat across a narrow line, which helps when you need cleaner welds on PVC flooring, waterproof membranes, roofing sheets, tarpaulins, pool linings, bumpers, or water tanks.
This is not a full welding kit. You still need a compatible hot air plastic welder, proper welding rod or material, and safe work conditions.
Before You Buy: Measure your hot air welder outlet before ordering. These nozzles are listed with a 32mm inner diameter, so they may not fit smaller heat guns, soldering stations, or non-standard plastic welders.
Who Should Buy It?
Best For
- You already own a compatible 32mm hot air plastic welder.
- You need flat nozzles for PVC flooring, membranes, liners, roofing, or tarpaulin work.
- You want multiple nozzle angles for straight seams, corners, and harder-to-reach areas.
Skip If
- Your heat gun outlet is not 32mm.
- You need a complete welder kit with a heat gun, rollers, rods, and accessories.
- You want a wide 40mm nozzle for broader seam coverage.
Material and Build Quality
The nozzles use stainless steel, which suits hot air plastic welding because the material handles heat better than light-duty plastic accessories. The polished stainless finish also helps resist corrosion during normal workshop use.
The stronger build matters when you weld for longer sessions. A nozzle that warps, cracks, or rusts can affect airflow and seam control. Stainless steel gives you a more stable accessory for repeated repair jobs, flooring work, and membrane projects.
The nozzles still need careful handling. Hot air welding parts can become extremely hot during use, so you should let them cool before removing, cleaning, or storing them.
Fit and Compatibility
The key fit detail is the 32mm inner diameter. This set is designed for compatible hot air plastic welder guns, including many 1500W and 1600W plastic welding guns with a matching outlet size.
Do not assume every heat gun will fit. Many general-purpose heat guns, craft heat guns, and soldering hot air tools use different nozzle sizes. A loose fit can leak hot air, while a tight or forced fit can damage your welder or nozzle.
Pro Tip: Before your first project, test each nozzle on scrap material using the same plastic type, welding rod, airflow, and temperature range you plan to use on the final seam.
Welding Performance
The 20mm flat mouth gives you a controlled heat path for narrow seams and detail work. This shape works well when you need to heat the weld area without spreading hot air too far across the surrounding material.
The three angles give you more control across different positions. The straight nozzle suits open seams and flat surfaces. The 90-degree and 120-degree nozzles help when a seam sits near an edge, corner, wall, or awkward repair area.
- More even heat placement: The flat-tip design helps spread hot air across the seam instead of blasting one small point.
- Cleaner welding lines: A narrow 20mm outlet can help you keep the weld path controlled on visible plastic seams.
- Better access: The angled nozzles make it easier to work around edges, raised surfaces, and tight repair spots.
Application and Efficiency
These nozzles are made for hot air plastic welding, not metal welding. They work as heat-directing accessories for bonding and repairing compatible plastic materials.
| Application | How the Nozzle Helps |
|---|---|
| PVC plastic flooring | Helps control heat along edge treatments and narrow seams. |
| Waterproof membranes and roofing | Directs heat into overlap seams with less wasted airflow. |
| Swimming pool linings | Supports cleaner bonding on liner repairs when used with the correct welder settings. |
| Tarpaulins | Helps create controlled heat along fabric-reinforced plastic seams. |
| Plastic bumpers and water tanks | Useful for repair areas where nozzle angle and heat control matter. |
The nozzles can improve efficiency because they move heat from the welder toward the work surface with a focused flat outlet. Your final results still depend on the plastic type, temperature setting, welding rod, pressure, travel speed, and surface prep.
How It Performs in Real Use
For PVC Flooring and Edge Work
The 20mm flat mouth gives you useful control for narrow flooring seams and detail work. You can guide heat along the edge without covering too much surrounding material, which helps when appearance matters.
For Waterproof Membranes and Roofing
The nozzles help transfer hot air into overlap seams on membranes and roofing sheets. The angled options can be helpful when the weld line sits near a raised edge, curb, or corner.
For Tarpaulins and Pool Liners
The narrow flat design works well for plastic sheet repairs where you need steady heat across a small seam. For best results, match the temperature and speed to the material so you do not scorch or underheat the surface.
For Bumpers and Water Tanks
The set can help with plastic repairs where access is limited. The 90-degree and 120-degree nozzles give you more approach angles than a straight nozzle alone.
How to Use It Correctly
Start by confirming that the nozzle fits securely on your hot air plastic welder. Do not force the nozzle onto an outlet that is too large or too small.
Clean the plastic surface before welding. Dirt, moisture, oils, or loose material can weaken the bond and make the seam look rough.
Use scrap material for setup. Test the temperature, airflow, travel speed, and pressure before working on the final piece. A small test run can help you avoid overheating, bubbling, or poor bonding.
Let the nozzle cool after use. Stainless steel holds heat, so handle the nozzle with heat-safe gloves or tools only when needed.
Compatibility and Safety Notes
This nozzle set is an accessory for hot air plastic welding. It is not designed for arc welding, MIG welding, TIG welding, gas welding, or general metal welding.
Always follow your welder manual for safe temperature settings, airflow, and nozzle changes. Wear proper eye protection, gloves, and ventilation when heating plastics, especially when working with roofing materials, liners, or repair plastics that may release fumes.
Do not use these nozzles on unknown plastics until you confirm the material can be safely welded with hot air. Some plastics do not weld well, and some can create unsafe fumes when overheated.
Pros and Cons
Pros
- Includes straight, 90-degree, and 120-degree nozzles for different working angles.
- 20mm flat mouth helps control heat along narrow plastic welding seams.
- Stainless steel construction supports high-heat use and corrosion resistance.
- 32mm inner diameter fits compatible hot air plastic welder guns.
- Useful for PVC flooring, membranes, roofing, pool liners, tarpaulins, bumpers, and water tanks.
Cons
- Will not fit every heat gun, so you must confirm the 32mm outlet size.
- Does not include the hot air welder, welding rod, roller, or other repair tools.
- 20mm width may feel too narrow if you need broad seam coverage.
Is It Worth the Price?
The SWIGRANCE Hot Air Welding Nozzles 3Pcs/Set is worth considering if you already have a compatible 32mm hot air plastic welder and need more nozzle angle options. You get three practical shapes in one set, which can be more useful than buying only a straight flat nozzle.
The best value comes from projects that need controlled seam work, such as PVC flooring, membranes, tarpaulins, or liner repairs. It is not the best fit if you still need a full plastic welding kit or if your current welder uses a different nozzle size.
How It Compares to Alternatives
Compared with a single straight flat nozzle, this 3-piece set gives you more flexibility because it includes 90-degree and 120-degree options. That matters when you work near corners, raised edges, or tight repair areas.
Compared with wider 40mm flat nozzles, this 20mm set gives you more control on narrow seams but covers less surface area per pass. Choose this set if precision and access matter more than wide coverage.
Frequently Asked Questions
What comes in the SWIGRANCE Hot Air Welding Nozzles set?
The set includes three narrow flat nozzles. You get one straight nozzle, one 90-degree nozzle, and one 120-degree nozzle.
What size are these hot air welding nozzles?
Each nozzle has a 20mm flat mouth width and a 32mm inner diameter. The 32mm fit is the most important detail to check before buying.
Will these nozzles fit any heat gun?
No. These nozzles are made for compatible hot air plastic welder guns with a 32mm outlet. They may not fit general-purpose heat guns or smaller craft heat tools.
What materials can you weld with these nozzles?
They are designed for hot air plastic welding applications. Common uses include PVC flooring, waterproof membranes, roofing materials, pool liners, tarpaulins, plastic bumpers, and water tanks.
Are the nozzles easy to clean after use?
They should be manageable to clean once fully cooled. Remove residue carefully and avoid scraping the nozzle in a way that damages the flat mouth or changes airflow.
Is stainless steel a good material for hot air welding nozzles?
Yes, stainless steel is a practical choice because it handles heat and resists corrosion better than many light-duty materials. It also helps the nozzle keep its shape during repeated use.
How should you store the nozzles when not in use?
Let the nozzles cool completely, wipe off debris, and store them in a dry place. Keeping them away from dust and impact helps protect the flat mouth shape.
Who should skip this nozzle set?
Skip it if your welder does not use a 32mm nozzle connection or if you need a complete plastic welding kit. You may also prefer a wider nozzle if your main work involves broad overlap seams.
The Bottom Line
The SWIGRANCE Hot Air Welding Nozzles 3Pcs/Set is a smart buy if you need 20mm flat nozzles for a compatible 32mm hot air plastic welder. Its biggest strengths are the stainless steel construction and three nozzle angles, while its main limitation is fit compatibility. Skip it if you need a full welder kit or a wider nozzle for large seam coverage.
