What conditions should flanges meet for the gauge manufacturer?


Do you or your customer need to install a gauge in a pipe? If so, you can realize the connections in different ways. But the best way to do so is by using flanges. Why exactly? And what requirements do the flanges and their manufacturer have to meet? We will go over the basics below. You can find all the necessary details in our checklist.


Download our quality checklist

The reason why it is best to use flanges when installing a measuring instrument is the ease of maintenance afterwards. If the instrument is ever in need of replacement, you can easily remove it and fit a new one in its stead.

Flanges are therefore often used to integrate flow and pressure gauges or temperature probes into the pipework or to place a level gauge on a vessel. This is the case for numerous applications in all kinds of sectors, from the (petro) chemical to the food industry. For this purpose, the flanges must meet several crucial conditions.

Extreme precision is required

If your own company or customer needs flanges to connect a level gauge or gauge glass, you can often use standard flanges, with standard dimensions and tolerances. Here, the tolerated deviations do not affect the measurement result.

However, when you need to monitor pressure, flow or temperature, you will have to be able to measure even more precisely. This means that the flanges have to be made even more accurately, with lower margins for error.

Customization is often needed

Can only minimal deviations of the flange be allowed? Then there is a good chance that your flanges not only need to be extremely precise but also made to measure.

The connection of these flanges is standard so that they fit perfectly on the already installed standard flanges of the pipework, with the bolts precisely in the same places. However, the inner work needs to be exactly made-to-measure.

In quality material

This high-precision, made-to-measure flange must always be manufactured in high-quality material. After all, the instrument is a crucial part of the piping work. A part that must at all times provide very accurate measurements, regardless of the dynamic influences to which it is subject. Ideally also during a long life span.

As a result, the measuring instrument must be made of the right material, of the right quality. If this is not the case, the instrument will generate incorrect measurement results due to corrosion after a few months to years.

Quality ensures safety

One of the reasons why the quality of the flanges is so essential is safety in the factory. Wherever gauges are installed in pipes or attached to vessels, there is a potential risk of leakage. Not so much if water runs through the pipes, under low pressure, but definitely when sulfuric acid flows through, under high pressure. Then nothing may go wrong.

As long as the flanges are made precisely according to your specifications, technical drawing and supplied standards, they will reduce that risk of leakage.

How can you be sure of all this?

How can you be sure that the flanges for your measuring instruments are guaranteed to remain within the minimum tolerated size deviations? Or that their interior fits the instrument’s inner diameter perfectly, minimizing the risk of erroneous measurements? And that the flanges are made in the right quality material?

With the required tests

On the one hand, of course, by having the necessary tests carried out, to check that the material of the flanges indeed meets the standards, to obtain the necessary certificates. The more critical the application, the further you take it. The test can be carried out by the manufacturer himself, followed by a second test by an external inspection organization.

With a thorough audit

The gauge builder can also audit the manufacturer himself. He will then be able to check the internal quality control system and place a test order to check whether the made flanges exactly meet his requirements. A manufacturer who pursues quality will gladly assist in this process.

With the insights from our checklist

We spoke to you about the importance of precise dimensions, customization and quality material. To make sure that flanges for gauges meet these requirements, you can have them extensively tested and audit the manufacturer. But even before you order, you need to know what precision, quality and customization entail and how to ensure them.

Read the answers in our quality checklist

Which manufacturer can supply you with these flanges?

Extremely accurate in terms of dimensions, precisely tailored to the interior of your measuring instrument, in guaranteed quality material, and also in small quantities, because you only need two flanges per instrument? Also quickly delivered, because you don’t have the custom made flanges in stock?

These are precisely the assets that make Anita Steel & Metals unique on the market. Not only do we produce extremely reliable flanges in all kinds of special shapes and materials according to your technical plan, but we also do it speedily. On average, we deliver worldwide within one to two weeks. This swiftness is due to our extensive stock of semi-finished products and our flexible production, fully focused on fast top quality.

Contact us today



Alloy Steel EN19 / AISI 4140 / 42CRMO4 Grade Plate

EN19 Steel Plate, 4140 Sheet, ASTM A829 Alloy Structural Steel Plates, AS 42CrMo4 CR Sheets, AISI 4140 Sheet, SCM440 Alloy Steel Sheet, 4140 Alloy Steel Plate Manufacturers in India, Alloy Steel DIN 1.7225 Hot Rolled Plate Stockist, Chromium Molybdenum Alloy Steel 4140 Sheets, Alloy Steel EN19 Plate Supplier in Mumbai, India.

EN19 Steel Plate

The EN19 / 4140 GRADE PLATES that we offer exactly match the desirable plates of such kinds. It is of the best quality and endowed with high tensile strength. We are working in full throttle to make it available to the length and breadth of the country and abroad. We are one of the eminent Exporters and Suppliers of EN19 Grade Steel Plate from Mumbai, India.

EN19 / 4140 GRADE PLATE Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon, Oil Quenched & Tempered Hardenss is 28-34 HRC. EN19 steel annealing delivery hardness less than 250HB.

The alloy steel sheet and plates are induced for the use in the machine tool and equipment. These have the great formability, workability and weldability feature. So it is useful with low machining costs using the conventional machines. The alloy steel grade is commonly supplied with heat treatment and testing. Furthermore, the material goes for processing in the top mills and after it, these are annealed. Steel grade is both magnetic and non-magnetic in nature. Our inventory has sheet and plate in a variety of specification, standards, dimensions, thickness, and designations.

ASTM A829 AISI 4140 Steel Plate, Alloy Steel EN19 Sheet, Alloy Steel 4140 Plate, EN19 Sheet Exporter, Chrome Moly 4140 Steel Plate, 42CrMo4 Steel Plate and Sheet, EN19 709M40 Alloy Steel HR Plate, 4140 Plate, EN19 / 4140 Hot Rolled Steel Plate, Alloy Steel SCM440 Cold Rolled Sheet, AISI 4140 Plates Manufacturers in Mumbai, India.

42CrMo4 Steel Plate

Standard Specification For Alloy Steel EN19 / 4140 Sheet Plate

Standard : AISI, ASTM, BS, DIN, GB,JIS

Width : 1000mm-4500mm

Thickness : 5mm-150mm

Length: 3000mm-18000mm

Supply Condition: Normalized Rolling, As Rolled, Furnace Normalizing, Vacuum Degassing, Simulated Post-Weld Heat Treatment or as per customer requirement.

Form : Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank, Circle, Ring etc.

 EN19 / 4140 Alloy Steel Sheet Plate Equivalent Grades

AISI

DIN

AFNOR

BS

UNI

GB

GOST

ISO

4140

42CrMo4

42CD4

708M40

42CrMo4

42CrMo

35KHV/38KHV

42CrMo4

 

Different Types of EN19 / 4140 Sheet Plate

  • EN19 Steel Sheet
  • Chromium Molybdenum Alloy Steel EN19 Plates
  • AISI 4140 Steel Sheet
  • Chromium Molybdenum Alloy Steel 4140 Plate
  • EN19 Hot Rolled Alloy Steel Plate
  • Alloy Steel 1.7225 Sheet Supplier
  • EN19 Plate Exporter
  • Alloy Steel 42CrMo4 Sheet
  • AISI 4140 Alloy Steel Rolls
  • SCM440 Alloy Steel Plate Manufacturer
  • Alloy Steel EN19 / 4140 CR Sheet
  • Alloy Steel EN 1.7225 HR Plate
  • EN19 / 4140 Alloy Steel Rings
  • Alloy Steel Foils EN19 / 4140
  • Alloy Steel EN19 – 709M40 Circle
  • Alloy Steel SCM440 Sheet
  • Alloy Steel 42CrMo4 Plate

 Chemical Composition of EN19 / AISI 4140 Sheet Plate

C%

Si%

Mn%

P%

S%

Cr%

Mo%

0.35-0.45

0.10-0.35

0.50-0.80

0.035 Max

0.050 Max

0.9-1.50

0.20-0.40

 

Mechanical Properties of EN19 / 4140 Sheet Plate

Heat Treatment

Size mm

Tensile Strength Rm N/mm²

Yield Stress Re N/mm²

Elongation a% on 5.665ÖSo

Impact Izod J

Impact KCV J

Proof Stress rp0.2

Hardness HB

R

>100≤250

700/850

495

15

34

28

480

201/225

S

>150≤250

775/925

555

13

27

22

540

223/277

S

>63≤150

775/925

585

15

54

50

570

223/277

T

>29≤100

850/1000

680

13

54

50

655

248/302

U

>13≤63

925/1075

755

12

47

42

740

269/331

V

>6≤29

1000/1150

850

12

47

42

835

293/352

W

>6≤19

1075/1225

940

12

40

35

925

311/375


  • Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077
  • AISI 4140 FORGE Steel Mechanical Properties and Physical properties
  • Density of EN19 Alloy steel material: 7.85kg/cm3
  • Engineering Alloy Steel material EN19 yield strength: 555-755 N/mm²
  • Tensile strength of EN19 Engineering steel: 775-1075 N/mm²
  • Engineering steel material EN19 hardness in HRC:
  • Flame or induction hardening can give a case hardness of 50 HRC or higher.
  • EN19 equivalent material with AISI 4140, DIN 42CrMo4 EN 1.7225, GB 42CrMo, JIS SCM440C alloy engineering steel

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