Waverley Brownall

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June 16, 2017 By Waverley Brownall

How To Order Steel Tube That Won’t Let You Down

The majority of our custom base requires stainless steel tube and compression fittings for an industrial environment – ensuring the flow and control of that flow is the highest quality at a range of temperatures and pressures.

The integrity of a compression fitting connection is highly dependent upon the correct selection of tubing and on its correct preparation.

It is important to order the correct stainless steel tube, that is of a high quality for any application. This is why we supply 316L tube to BS 9001 standard.

How To Order Steel Tube

To order your tube, please email us at

enquiries@waverleybrownall.co.uk

Metric or imperial sizes available – 3 metre and 6 metre length.

Sizes up to 1 inch tube O.D Outside Diameter and 0.109″ wall thickness.

We supply stainless steel tube to Conoco Phillips, SGN and National Grid. By choosing to order with us, you are choosing a guaranteed high-quality UK based supplier that is trusted by the biggest brands.

Steel Tube – Ensuring Quality

These are four variables to be considered when selecting tube:

a. Tubing Material

b. Tubing Wall Thickness

c. Tubing Surface Finish

d. Tubing Hardness

The key to leak proof fitting is that the tube must be softer than the ferrule for the correct “coining” action to take place.

The tube specification should include material, hardness, wall thickness and surface finish. Tube should never be harder than the ferrules contained in the connector i.e. Monel ferrules should never be used on stainless steel tube as this could adversely affect the performance of the ferrules.

The tube wall thickness for maximum working pressures, together with recommendations for gas use, and when to pre-assemble are to be found in the Ringlok and Duoloc catalogues.

Tube Material Selection

Waverley Brownall can supply tube in a large range of materials. This includes grade 316 stainless steel tube as standard. Steel tube is the most popular tube type within the majority of industrial applications.

However, other, more advanced materials are able to give you more advanced capabilities. This includes a higher corrosion resistance and general strength than steel.

1

Tube materials list:

· INCOLOY 825

· Hastelloy C-267

· INCONEL

· Monel alloy 400

· Titanium (Grades 1-4)

· Super Duplex

· Duplex Stainless Steel

· 6% Moly Stainless Steel

Filed Under: Uncategorized Tagged With: stainless steel tube, stainless steel tubing

March 20, 2017 By Waverley Brownall

Tube Bending Tips For Duoloc Fittings

Tube Bending Tips For Duoloc Fittings

Tube bending may be required as a form of metal forming for tubular installation. Here are some of our top tips for ensuring a safe and correct bending procedure.

Tube Bending Tips

tube bending diagram

Always bend tube prior to insertion in connectors and ensure adequate length of straight tube to fully enter the connector abutment.

These lengths should be added to the radius of tube bend as recommended by the tube bender manufacturer.

When using tube benders always follow the manufacturers instructions for the make of tube bender in use at the time.

The radius of the bend is as recommended by the tube bender manufacturer.

Recommended Bend Lengths

The minimum straight length of tube before a bend is shown in the table below:

Tube OD (inches) 1/4″ 5/6″ 3/8″ 1/2″ 5/8″ 3/4″ 1″
Tube OD (mm) 6mm 8mm 10mm 12mm 16mm 20mm 25mm
Straight Length (inches) 0.82″ 0.88″ 0.94″ 1.19″ 1.25″ 1.25″ 1.5″
Straight Length (mm) 20.8mm 22.3mm 23.8mm 30.2mm 31.7mm 31.7mm 39.3mm

Tube Bending Problems

The bending of tube adjacent to compression connectors requires care as sealing problems can result. These can be caused by:

a. linear score marks created by worn bending tool formers.

b. tube may be deformed on section.

c.over/under bent tube causing misalignment and excessive stresses.

d. insufficient straight length of tube before a bend.

When Using Tube

  • Do not crush tube in vice jaws, use either soft jaws or aluminium tube jaws
  • Do not force tube that is not round into tube or pipe fittings
  • Do not use damaged tube, cut it back to where the tube is not damaged before use

Helpful articles:

  • ​What is tube bending? WISEGEEK
  • How To Achieve The Perfect Bend – The Fabricator
inShare0

*Information produced from Waverley Brownall official training manual: Installation and Maintenance of Small Bore Pipework for Duoloc single ferrule fittings. Not to be reproduced, re-written or copied to other websites under the copyright material act.

Filed Under: Uncategorized Tagged With: duoloc compression fittings, stainless steel tube, stainless steel tubing, tube bend suppliers uk, tube bending, tube bending guide, tube bending tips

March 8, 2017 By Waverley Brownall

Tube VS. Pipe – 8 Advantages Of Using Tube Instead Of Pipe

Tube VS. Pipe – 8 Advantages Of Using Tube Instead Of Pipe

Tube VS. Pipe, which would be better for your application?

Tube VS. Pipe

We have listed 8 advantages to use tubing over pipe based on usability and maintenance.

1. Tube is easier to install without the need for special tooling to cut threads. Standard spanners are all that is required.

2. Tube is easier to manipulate, bend, because of the thinner wall sections. Pipe on the other hand cannot be bent easily therefore elbows are usually required which introduces extra leak paths for the extra fittings. Therefore tube installations are far quicker and cost-effective than pipe.

3. No thread sealant is required prior to assembly, as would be the case for taper threaded pipe ends.

4. Systems much easier to disassemble for scheduled maintenance.

5. Tube is lighter since no allowances are required for threading whilst maintaining sufficient wall thickness.

6. The gradual tube bends provide better fluid flow and ultimately smaller pressure drops, as opposed to the sharp bends in elbows which create greater pressure drops due to turbulence and the loss of potential energy.

7. Tube is lighter since no allowances are required for threading whilst maintaining sufficient wall thickness.

8. The gradual tube bends provide better fluid flow and ultimately smaller pressure drops, as opposed to the sharp bends in elbows which create greater pressure drops due to turbulence and the loss of potential energy.

We supply stainless steel tube to our customers in many sizes, including up to 1 inch OD. Wall thicknesses up to 0.109″ or 3.0mm. Our tubing ISO 9001 approved.

We can advise you on what tube sizes are recommended for gas service as apposed to other services, such as water or corrosive substances.

Our tube is compatible with single and double ferrule Waverley Brownall fittings.

How To Order Steel Tube That Won’t Let You Down

Read More
Tube Bending Tips For Duoloc Fittings

Read More
Metric Steel Tubing Sizes

Metric steel tubing sizes for our seamless tube. Our tubing is perfect for use with instrumentation fittings and valves. Material is[…]
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Instrumentation Tubing

Metric and Imperial OD Tubing by Waverley Brownall is stocked. This seamless tubing comes in 316 stainless steel as standard[…]
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Metric Tube Sizes Chart – Stainless Steel Tube

Metric tube sizes chart, showing the tube OD and tube wall thickness and pressures in bar. The OD measurement is[…]
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Filed Under: Uncategorized Tagged With: advantages of tube, instrumentation tubing, stainless steel tube, stainless steel tube suppliers, stainless steel tubing, tube VS. pipe

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