API flange

API Flange

American Petroleum Institute or API was formed so as to differentiate themselves from the APA flanges. They have the same origin as that of ANSI/ASME flanges, but are quite different from one another. The Api Flanges is designed for handling higher-rated operating pressure. They have high strength and are specifically designed to handle heavy work in oil refinery systems, nuclear power applications, bitumen upgraders, etc.

The Api 650 flanges is very efficient in resisting different types of corrosion like pitting or cracking when exposed to caustic solutions. The Api slip on flanges is the only choice for handling substances such as oil and explosive gasses, which needs high temperature and pressure tolerances. An Api blind flanges and ASME blind flange of the same dimensions might use the same circle and bolt hole, but remember that they are quite different from one another.

API 10000 instrument flanges and API 5000 blind flange suppliers in UAE

Specification of API flange


Api Flange Specification

API Flange Manufacturing Size Range Material Class API 5000 Flange Pressure Class
  • 1-13/16″ to 26-3/4″

For larger sizes please contact above API flange manufacturers & suppliers and get fastest delivery within 7 days in Saudi Arabia, Qatar, & Oman

  • BB
  • CC
  • DD
  • EE
  • FF
  • API 2000 (Class 600)
  • API 3000 (Class 900)
  • API 5000 (Class 1500)
Connection API 10000 Flange Performance Requirement API Flange Means
  • Bolted
  • Studded
  • PR1
  • PR2
  • API – American Petroleum Institute (U.S. trade association)
API Blind Flange Coating Types Most Common Types Of API High Pressure Flanges Material
  • Anti-rust painting
  • Oil Varnished
  • Black phosphating treatment
  • Electric zinc coated (Yellow zinc/ white)
  • Alloy material coated (Clad/ Lined)
  • Electro galvanizing coating (Thickness 20-30μm)
  • Hot dip galvanized (Thickness 200μm)
  • Test flange
  • Blind flange
  • Integral flange
  • Weld neck flange
  • Target blind
  • Swivel flanges (360° rotation)
  • Adapter flange
  • Threaded flanges
  • Spacer spool flanges
  • Companion flanges
  • Target flanges
  • Double studded adapter flanges (DSAF)
  • Adapter spools
Product Specification Level Types of API Weld Neck Flanges Marking On API certified flanges
  • PSL1
  • PSL2
  • PSL3
  • PSL4
  • API 5000 raised face weld neck flange
  • API 10000 flat face weld neck flange
  • API 3000 long weld neck flange
  • API 605 ring type joint weld neck flange
  • Manufacturers logo / name (OEM)
  • Manufacturing date
  • Material grade
  • Sizes
  • Standard name
  • Face type
  • Pressure class
  • Origin of material
  • Heat number
API 10000 Flange Installations & Applications API 650 Flange Meet standard Thread Types of API Threaded Flanges
  • Oil drilling
  • Wellhead system
  • Oil and gas wells
  • Manifold
  • Shipbuilding
  • Natural Gas
  • Pipeline projects
  • Subsea applications

Buy full range of API flanges from stock in Saudi Arabia & UAE, for custom design or fabrication work contact above listed top 10 API blind flange maufacturers

  • Sour service
  • NACE MR0175
  • NACE MR0103
  • NACE TM 0177
  • ISO 15156
  • NACE TM-0284
  • PWHT
  • NORSOK L 005
  • HIC
  • NPT thread
  • MPT thread
  • MNPT thread (Male)
  • FPT thread
  • FNPT thread (Female) – ASME B1.20.1
  • BSP
  • BSPP thread (Female & male)
  • BSPT thread (Female)
Testing Requirements Quality Assurance API Weld Neck Flange Face
  • Verify API Companion Flange are manufactured as per the work order
  • Material & visual inspection
  • Hardness test
  • Tensile test
  • Impact test
  • API compact flange dimensional check by ruler, calibrated tape or caliper
  • Dry film thickness check (for coating thickness by an elcometer)
  • Shell pressure test
  • PMI Test – Important test to check chemical composition
  • EN 10204 3.1 Certificate
  • Mill certificate
  • Third Party Inspection
  • Free replacement
  • FF
  • RF
  • RTJ

 

Buy API 650 flange in cl 150 to 2500. Check API weld neck flange price in Dubais

API flange standards

Type of API pipe flanges

API test flange

API test flange

API blind flange

API blind flange

API 5000 Integral flange

API 5000 Integral flange

API weld neck flange

API weld neck flange

API 10000 target blind

API 10000 target blind

API 650 swivel flanges

API 650 swivel flanges

API 3000 double studded adapter flanges (DSAF)

API 3000 double studded adapter flanges (DSAF)

API 3k threaded flanges

API 3k threaded flanges

API 5k adapter flange

API 5k adapter flange

API 10k puddle flange

API 10k puddle flange

 

Comparison of ASME & API flange

API Flange Type Pressure Class Rating
(PSI)
(kPa)
NPS in Inch
ASME B16.5 API ASME B16.5 API
API Weld neck Flange Class 600 2000# 1/2 To 24″ 1 13/16 To 11″
Class 900 3000#
Class 1500 5000#
API Blind and Threaded Flange Class 600 2000# 1 13/16 To 2 11/4″
Class 900 3000# 1 13/16 To 203/4″
Class 1500 5000# 113/16 To 11
Standard Full Form American Society of Mechanical Engineers American Petroleum Institute

 

API flange pressure rating chart

Pressure class Pressure Rating
API 3k Flange API 3000 3000 PSI
API 5k Flange API 5000 5000 PSI
API 10k Flange API 10000 10000 PSI
API 15k Flange API 15000 15000 PSI

 

API certified flanges bolt chart

NPS 3,000 (PSI) 5,000 (PSI)
Number Of Studs Diameter Of Stud Size Of Nut “ATF” Number of Studs Diameter Of Stud Size Of Nut “ATF”
1-13/16
2-1/16 8 7/8 1-7/16 8 7/8 1-7/16
2-9/16 8 1 1-5/8 8 1 1-5/8
3-1/16
3-1/8 8 7/8 1-7/16 8 1-7/16 1-13/16
4-1/16 8 1-1/8 1-13/16 8 1-1/4 2
5-1/8
7-1/16 12 1-1/8 1-13/16 12 1-3/8 2-3/16
9 12 1-3/8 2-3/16 12 1-5/8 2-9/16
11 16 1-3/8 2-3/16 12 1-7/8 2-15/16
13-5/8 20 1-3/8 2-3/16 16 1-5/8 2-9/16
16-3/4 20 1-5/8 2-9/16 16 1-7/8 2-15/16
18-3/4 20 2 3-1/8
20-3/4 20 2 3-1/8
21-1/4 24 2 3-1/8
26-3/4 24 2 3-1/8

 

10,000 (PSI) 15,000 (PSI)
Number of Studs Diameter Of Stud Size Of Nut “ATF” Number of Studs Diameter Of Stud Size Of Nut “ATF”
8 3/4 1-1/4 8 7/8 1-7/16
8 3/4 1-1/4 8 7/8 1-7/16
8 7/8 1-7/16 8 1 1-5/8
8 1 1-5/8 8 1-1/8 1-13/16
8 1-1/8 1-13/16 8 1-3/8 2-3/16
12 1-1/8 1-13/16
12 1-1/2 2-3/8 16 1-1/2 2-3/8
16 1-1/2 2-3/8 16 1-7/8 2-15/16
16 1-3/4 2-3/4 20 2 3-1/8
20 1-7/8 2-15/16 20 2-1/4 3-1/2
24 1-7/8 2-15/16
24 2-1/4 3-1/2 20 3 4-5/8
24 2-1/2 3-7/8

Other relevant products you may check specification

Quickly get pricing from genuine API certified flange suppliers in middle east and India. View API 15k flanges price in Bahrain

The production process of API 650 flanges would include machining, heat treating, and then forging.

The Api 5000 Flanges are manufactured using carbon steel or alloy steel, and they help to join pipes or block a section of the piping system.
Api 10000 instrument flanges is of ring type joint specifically and they are not designed for face-to-face makeup. The bolting force basically reacts on the metallic ring gasket.

The best way to check the class of your API Companion flanges is by looking for the stamp printed on it. If it has worn out or is not visible due to any reason, you can count the number of bolt holes and refer to the narrower range of flanges sizes in the chart given by the manufacturer.

Piping material introducing verified API 10k plate flanges suppliers in the United Arab Emirates. Check API 3000 blind flange with hydro test and material test certificates

The API slip On flanges can be tested with the non-destructive testing techniques. For example, radiography can be used for checking the corrosion on the flange face.

Check API companion flange and API 605 slip on flange pressure rating, specification, and corrosion resistance properties

The Api blind flanges are designed to withstand the harshest subsea environment, and thus they are not prone to corrosion easily.

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