Portwest FR37 Grey Bizflame Pro Class 1 Welding Overalls
 Portwest FR37 Grey Bizflame Pro Class 1 Welding OverallsPortwest FR37 Grey Bizflame Pro Class 1 Welding Overalls 

Portwest FR37 Grey Bizflame Pro Class 1 Welding Overalls

  • Bib and brace shields wearer from molten iron splashes
  • Ideal for sheet metal workers and other welding professions
  • Elasticated straps for comfortable, secure fit
  • Inherent flame resistance and anti-static qualities
Our Price:  £26.88
Excl. VAT. (£32.26 Inc. 20% VAT)

Portwest FR37 Grey Bizflame Pro Class 1 Welding Overalls

If you work around thermal hazards such as molten iron then the Portwest FR38 Grey Bizflame Pro Class 1 Welding Overalls will offer you durable, reliable personal protection. The overalls are flame resistant, anti-static and feature twin-stitched seams so you can be confident in their longevity.

What Can the Grey Bizflame Pro Class 1 Welding Overalls Do for Me?

The overalls have several helpful features:

  • Multi-Hazard: Guaranteed flame resistance for life of garment, protection from molten metal splashes
  • Anti-Static: Garment will prevent a build-up of static charge around the wearer
  • Durable: Twin-stitched seams and durable brass zips for maximum longevity
  • Functional: Double rule pocket, flapped back pocket and chest pocket ideal for tool storage, elasticated straps for comfortable, secure fit

Bizflame Pro, the fabric from which the overalls are constructed, is designed specifically to shield the wearer from flames, static build-up and welding hazards. The carbon fibre element of the material ensures the anti-static properties are inherent.

Are the Portwest Bizflame Pro Welding Overalls Available in Any Other Colours?

The Portwest overalls are also available in Navy.

Who Can Use the Portwest Bizflame Pro Overalls?

The overalls are suited for use in proximity to molten metal and other heat and flame related hazards. They offer extensive coverage, and will prevent a build-up of static charge which could lead to an explosion. Some of the professions and environments for which the overalls are designed follow here:

  • Petrochemical refineries
  • Sheet metal workers
  • Offshore industry
  • Oil and gas industry
  • Assembly
  • Maintenance work
  • Utilities
  • Engineers

Which Size Is Right for Me?

To find the correct size for you please measure yourself around the waist and chest as illustrated in the images below, then find the corresponding size with reference to the table. Please select this size from the drop down menu at the top of the page.

Chest MeasurementHow to Measure Your Waist

Size Chest Measurement (cm) Waist Measurement (cm)
Small 92 - 96cm 76 - 80cm
Medium 97 - 104cm 81 - 88cm
Large 103 - 112cm 89 - 96cm
Extra Large 113 - 124cm 97 - 104cm
XX-Large 125 - 132cm 105 - 112cm
XXX-Large 133 - 140cm 113 - 120cm

What Certifications Have the Portwest Class 1 Welding Overalls Received?

The Portwest overalls have undergone thorough testing, so you can be certain of your safety at work.

  • EN 11612:
    • A1: Limited flame spread
    • A2: Limited flame spread, hemmed
    • B1: Convective heat (scale 1 - 3)
    • C1: Radiant heat (scale 1 - 4)
    • E3: Molten iron splash (scale 1 - 3)
    • F1: Contact heat (scale 1 - 3)
  • EN ISO 11611
    • Class 1
    • A1
    • A2
  • EN 1149:
    • 5: Protects against electrostatic discharge in case of an explosion

What Do These Certifications Mean?

  • EN 1149-5: This standard demonstrates whether a garment protects against electrostatic discharge in environments such as petrochemical refineries where there is a risk of explosion
  • EN 11612: This standard determines whether a garment offers protection against heat and flames, and whether this protection extends to convective, radiant or contact heat
  • EN 11611: This standard shows whether an item of clothing is suitable for welding or similar tasks and will protect the wearer from heat and metal splashes

Under EN 11612 the overalls offer protection against radiant, convective and contact heat, as well as the highest possible level of protection against splashes of molten iron. The overalls have also achieved certification under EN 11611, demonstrating they are suitable for welding tasks. Finally, the EN 1149 qualification indicates the garment will prevent a build-up static charge around the wearer.

Is Further Information Available on These Certifications?

If you would like to find out more about the standards mentioned here please read one of our blogs on the subject:

What Are the Key Features of the Bizflame Pro Overalls?

  • Flame resistance can be relied on for the life of the garment
  • Certified protection against splashes of molten metal, radiant, convective and contact heat
  • Fabric blocks 98% of harmful UV rays
  • Twin-stitched seams and brass zips for maximum durability
  • Elasticated straps for a secure, comfortable fit
  • Five pockets for storage including handy chest pocket
  • OEKO-TEX certified as free from harmful chemicals

How Should I Care for the Portwest Overalls?

  • Wash at temperatures of 40°C or below
  • Do not bleach
  • Do not tumble dry
  • Iron at medium temperatures
  • Do not dry clean

What Are the Technical Details of the Bizflame Pro Overalls?

  • Shell Fabric: 99% cotton, 1% carbon fibre 330g

What Documentation Is Available?

Conformity Statement Instructions for Use
Portwes 371 Conformity Download the Instruction Manual for the Towa Gloves

Be the first to Write a Review for this item!

Ask a Question

If you haven't found what you're looking for with our listing or if there is anything you would like to ask, please feel free to fill in the form below and we will strive to find your answer as soon as possible. Our team of workwear experts have a huge base of knowledge that allows them to answer any questions that you might have regarding this product.

Name: *
Email Address: *
Your Message: *
Please enter your query here
Please add the two numbers


This item will be dispatched by 1st Class Royal Mail, DPD courier or UPS courier.

The estimated delivery time for this item is usually 1-3 working days when ordered before 14:00, Monday to Friday (excluding Bank Holidays).

Please contact our Customer Care Team on 020 7501 0598 for an up to the minute delivery expectation for this product.

UK Delivery Charges

Certain orders delivered to the UK are subject to a delivery charge; refer to the table below for more information. Please note that all values are listed exclusive of VAT.

Order Value UK Delivery Charge
Up to £39.99 £4.95
£40.00 and over FREE

Coronavirus Update

Please note that, due to the current COVID-19 pandemic, our processing time may increase slightly. We would advise that orders may be set back by as much as five working days, though we are striving to keep our delivery schedule as close to normal as possible.

If you have been waiting over 7 working days for your order and would like an update, please contact our Customer Care team at