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Email : info@ansteelhub.com / ansteel.mumbai@gmail.com   708, 7th Floor, Parth Solitaire Sector 9E, Near D Mart, Roadpali, Kalamboli, Navi Mumbai, Maharashtra 410218 

Orifice Flanges

Orifice Flanges

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304 H Stainless Steel Pipes and Tubes

Orifice Flanges are used instead of the standard pipe flanges when orifice plate or flow nozzle is used. In other words, orifice flanges are used with orifice meters. The basic purpose for this is to measuring the flow rate of either gases or liquids in the respective pipeline. These flanges are used in various industrial applications and are available in various sizes and materials. All orifice flange units are supplied with the plate, pressure connection holes, and jack screws.

Key Features of Orifice Flanges:

  • Come with either raised faces or ring type joint (RTJ ) facings.
  • The orifice flanges have modifications of radial tapped holes in the flange ring for meter connections.
  • There are the orifice plate carriers in these flanges for the reason of fitting meter connections.
  • The additional bolts available serve as a jack to allow the separation of the two flanges to change the orifice plate or for other relevant services like inspection.

Uses of orifice flanges:

  • The basic purpose of an orifice flange is used to flow/rate metering of piping systems.
  • They are used for all intensive purposes, similar to weld neck and slip-on flanges with extra machining.

Orifice flanges Product Range

Orifice Flanges Range
½” (15 NB) to 48″ (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. Available with NACE MR 01-75

Stainless Steel Orifice Flanges
Grade : 304, 304L, 304H, 309, 310, 310S, 316, 316Ti, 316 L, 317, 317L, 321, 347, 347 H, 409, 410, 410S, 420, 430L

Duplex Steel Orifice Flanges
Grade : 2205 (UNS No. S31803), 2507 (UNS No. S32750)

Nickel Alloy Orifice Flanges
Grade : Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II)

Copper Alloy Orifice Flanges
Grade : UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu -Ni- 70/30)

Orifice Flanges Standard

  • ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
  • B.S : BS4504 , BS4504, BS1560, BS10
  • OTHER : PLATE, PLATE BLANK

Value Added Services for Orifice Flanges

  • HOT DIPPED GALVANIZING
  • HEAT TREATMENT
  • CNC MACHINING
  • THREADING

General Contract

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Project Planning

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Interior Design

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Benefits of using 304H Stainless Steel

  • Higher carbon content gives the material greater heat resistant qualities
  • Higher tensile yield strength
  • Greater short and long term creep strength.

304H alloy is commonly found in the oil refining, gas and chemical industry and is used in industrial boilers, pressure vessels, heat exchangers, pipelines and condensers. The material is also used throughout the power generation industry. 

304H Stainless Steel Pipes and Tubes Product Range 
304H Stainless Steel Pipes and Tubes Specifications: ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
304H Stainless Steel Pipes and Tubes Sizes (Seamless): 1/2″ NB – 24″ NB
304H Stainless Steel Pipes and Tubes Sizes (ERW): 1/2″ NB – 24″ NB
304H Stainless Steel Pipes and Tubes Sizes (EFW): 6″ NB – 100″ NB  

304H Stainless Steel Pipes and Tubes Wall Thickness available:
Schedule 5S – Schedule XXS (heavier on request)


Other Materials Testing:

NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.

304H Stainless Steel Pipes and Tubes Dimensions:
All Pipes is supplies and stock of and inspected/tested to the relevant standards including ASTM, ASME and API etc.

304H Stainless Steel Pipes and Tubes Background

Grade 304 is the standard “18/8” stainless; it is the most versatile and most widely used stainless steel, available in a wider range of products, forms and finishes than any other. It has excellent forming and welding characteristics. The balanced austenitic structure of Grade 304 enables it to be severely deep drawn without intermediate annealing, which has made this grade dominant in the manufacture of drawn stainless parts such as sinks, hollow-ware and saucepans. For these applications it is common to use special “304DDQ” (Deep Drawing Quality) variants. Grade 304 is readily brake or roll formed into a variety of components for applications in the industrial, architectural, and transportation fields. Grade 304 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.
Grade 304L, the low carbon version of 304, does not require post-weld annealing and so is extensively used in heavy gauge components (over about 6mm). Grade 304H with its higher carbon content finds application at elevated temperatures. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.

304H Stainless Steel Pipes and Tubes Composition
Typical compositional ranges for grade 304 stainless steels are given in table 1.
Table 1. Composition ranges for 304 grade stainless steel

GradeCMnSiPSCrMoNiN
304min.
max.

0.08

2.0

0.75

0.045

0.030
18.0
20.0
8.0
10.5

0.10
304Lmin.
max.

0.030

2.0

0.75

0.045

0.030
18.0
20.0
8.0
12.0

0.10
304Hmin.
max.
0.04
0.10

2.0

0.75
-0.045
0.030
18.0
20.0
8.0
10.5

304H Stainless Steel Pipes and Tubes Mechanical Properties
Typical mechanical properties for grade 304 stainless steels are given in table 2.
Table 2. Mechanical properties of 304 grade stainless steel

GradeTensile Strength (MPa) minYield Strength 0.2% Proof (MPa) minElongation (% in 50mm) minHardness
Rockwell B (HR B) maxBrinell (HB) max
3045152054092201
304L4851704092201
304H5152054092201
304H also has a requirement for a grain size of ASTM No 7 or coarser.

304H Stainless Steel Pipes and Tubes Physical Properties
Typical physical properties for annealed grade 304 stainless steels are given in table 3.

Table 3. Physical properties of 304 grade stainless steel in the annealed condition
 

GradeDensity (kg/m3)Elastic Modulus (GPa)Mean Coefficient of Thermal Expansion (m/m/0C)Thermal Conductivity (W/m.K)Specific Heat 0-1000C (J/kg.K)Electrical Resistivity (n.m)
0-1000C0-3150C0-5380Cat 1000Cat 5000C
304/L/H800019317.217.818.416.221.5500720

304H Stainless Steel Pipes and Tubes Grade Specification Comparison
Approximate grade comparisons for 304 stainless steels are given in table 4.

Table 4. Grade specifications for 304 grade stainless steel

GradeUNS NoOld BritishEuro normSwedish SSJapanese JIS
BSEnNoName
304S30400304S3158E1.4301X5CrNi18-102332SUS 304
304LS30403304S111.4306X2CrNi19-112352SUS 304L
304HS30409304S511.4948X6CrNi18-11
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

304H Stainless Steel Pipes and Tubes Corrosion Resistance

Excellent in a wide range of atmospheric environments and many corrosive media. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 600C. Considered resistant to potable water with up to about 200mg/L chlorides at ambient temperatures, reducing to about 150mg/L at 600C.

304H Stainless Steel Pipes and Tubes Heat Resistance

Good oxidation resistance in intermittent service to 8700C and in continuous service to 9250C. Continuous use of 304 in the 425-8600C range is not recommended if subsequent aqueous corrosion resistance is important. Grade 304L is more resistant to carbide precipitation and can be heated into the above temperature range.
Grade 304H has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 5000C and up to about 8000C. 304H will become sensitized in the temperature range of 425-8600C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.
304H Stainless Steel Pipes and Tubes Heat Treatment
Solution Treatment (Annealing) – Heat to 1010-11200C and cool rapidly. These grades cannot be hardened by thermal treatment.



304H Stainless Steel Pipe and Tube Packing

 

304H Stainless Steel Seamless Pipes and Tubes is sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.

SS 304H ASTM A312, ASTM A213, ASTM A269, ASTM A249, ASTM A358 Seamless Pipe packing will be according to international standard in bundles strapped by strips then into containers to avoid any damage.

Delivery: Within 10-25days or asap if we have enough stock

Types of Packaging:

  • – Bundles (hexagonal)
  • – Wooden Boxes
  • – Crates (steel/wooden)
  • – Special crates for U-Bend tubes with each radius separated
  • – Packaging for SS 304H ASTM A312 Seamless Pipe as per customer’s requirements

Special Features:

    • – Each bundle covered with plastic for protection against extreme weather.
    • – End of SS 304H ASTM A312 Seamless Pipe protected by plastic caps.
    • – Bundles strapped with plastic strips.
    • – Each radius of U-Bend tube separated by a separator.
    • – Packaging list (laminated) placed with box/crate.

 

  • 304H Stainless Steel Seamless Pipe Sizes Available in Stock with Price
    • 1/2″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 3/4″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 1″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 1-1/4″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 1-1/2″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 2″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 2-1/2″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 3″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 3-1/2″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 4″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 5″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 6″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 8″ NB in ThicknessSchedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 10″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 12″ NB in ThicknessSchedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 14″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 16″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
    • 18″ NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS

    304H Stainless Steel Seamless Tube Sizes in Thickness SWG/BWG Available in Stock with Price
    • 1/4″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 5/16″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 3/8″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 1/2″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 3/4″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 1″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 1-1/4″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 1-1/2″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 1-3/4″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 2″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 2-1/4″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 2-1/2″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 2-3/4″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 3″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 3-1/2″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 4″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 4-1/2″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
    • 5″ OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge

Some Great Features

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Durable

Withstanding Extreme conditons

Reliable

Efficient building material for service.

Intustry Tested

Tested Through-out all Safety Standards

Tough

Resisting fracturing when force is applied to it

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