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Monel  Blind Flanges Manufacturer and Exporter
Hastelloy  Flanges Manufacturer and Exporter
Duplex   Flanges Manufacturer and Exporter
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Quality Control


All ANTONG products are manufactured under strict process control and monitored throughout the production process. They are subjected to a number of checks to ensure total control conformity to specifications.

Chemical Analysis

Chemical Test as per required quality.

Corrosion Test

Corrosion test is conducted only when specially requested by the client.

Destructive/Mechanical Testing

Tensile, Hardness, Flattening, Flare, Flange and Reverse-bend tests are carried out in full compliance with relevant standards, i.e. ASTM A-1016 and A-999 norms. This ensures trouble-free expansion, welding and use at customers end.

Eddy Current Testing

To detect homogeneities in subsurface, eddy current testing is carried out using Flaw-mark Testing System.

Hydrostatic Testing

100% Hydrostatic Testing is carried out according to ASTM - A 1016 norms to check tubes for leakage.

Making

To ensure complete identification and traceability, all the information as required by the standards i.e. Brand Name, Size, Grade, Specifications, heat No., / Lot No. is marked on all the pipes and tubes by using the latest inkjet marking machine.

Visual Inspection

After passivation, every single length of tubes and pipes is subjected to a thorough visual inspection by trained staff to detect surface flaws and other imperfections.

Air under Press Test

Tubes are internally pressurized with clean and dry compressed air and being submerged in clear water to check any evidence of air leakage.

Supplementary Test

IGC Test (Inter Granular Corrosion Test)
Micro-Structure Analysis
Macro
Radiography Test
Ultrasonic Test
Liquid Penetrate Test
Eddy Current
Hot Tensile

Note: Supplementary & Non-Destructive Tests are conducted only when specially requested by the client.
Stainless steel Flanges ( product range)
WN – Welding Neck EN-TYPE 11
BL – Blind EN-TYPE 05
SO – Slip On EN-TYPE 01/12
LJ – Lap Joint EN-TYPE 02/04
SW – Socket Weld EN-TYPE 14
THR – Threaded EN-TYPE 13
LWN – Long Welding Neck / Integral EN-TYPE 21
Welding Collars EN-TYPE 32/34
ORIFICE Flanges, Swivel Flanges, Spades, Spacer Rings
Spectable Blinds, API 6A, JIS B2220, VSM, NFE, BS10/BS4504, GOST

GRADES:
Austenitic:
F304/304L 1.4301/1.4307 UNS S30403/S30400
F304H 1.4948 UNS S30409
F321/F321H 1.4541/1.4878 UNS S32100/S32109
F316/F316L 1.4401/1.4404 UNS S31603/S31600
F316L (MO+) 1.4435 UNS S31635
F316TI 1.4571 UNS S31635
F904L 1.4539 UNS N08904
F44 (254SMO®) 1.4547 UNS S31254
F310/F310S 1.4841/1.4845 UNS S31000/S31008
F347 (H) 1.4550 UNS S34700/S34709
F317L 1.4438 UNS S31703
F316H 1.4919 UNS S31609

Duplex & Super Duplex:
F51/F60 1.4462 UNS S31803
F53 1.4410 UNS S32750
F55 1.4501 UNS S32750

Nickel Alloys:
Alloy 800/800H 1.4876 UNS N08800/N08810
Monel 400 2.4360 UNS N04400
Alloy 600 2.4816 UNS N06600
Alloy 625 2.4856 UNS N06625
Alloy 825 2.4858 UNS N08825
Alloy C276 2.4819 UNS N10276
Alloy 59 2.4605 UNS N06059
Alloy C4 2.4610 UNS N06455
Alloy 22 2.4602 UNS N06022
Other Alloys available on request

Sizes according to ASME/ASTM B16.5 – B16.36 – B16.48
Class 150(lb) up to 24″
Class 300(lb) up to 20″
Class 600(lb) up to 20″
Class 900(lb) up to 16″
Class 1500(lb) up to 10″
Class 2500(lb) up to 8″

Sizes according to DIN – EN1092-1 – EN1759-1 – NFE – BS10/BS4504 & ISO7005-1
PN2.5/PN06/PN10 up to DN800
PN16/PN25/PN40 up to DN600
PN63/PN100 up to DN500
PN160/PN250 up to DN300
PN320/PN400 up to DN200
API 6A Flanges
2000 PSI up to 20000 PSI
JIS B2220
5K up to 63K

SPECIFICATIONS & STANDARDS:
ASTM/ASME SA/A182 – ASME SA/A240 – ASME SB/B564
ASTM/ASME B16.5/B16.48/B16.36
EN 10222-1/EN10222- 5
EN 1092-1/EN 1759-1
DIN17440
BS 10/BS 4504 (British Standard)
JIS B2220 – NFE – GOST – VSM – API 6A
ISO 7005-1 – NORSOK L005

Contact Us

  • GREAT STEEL & METALS

  • Room No 15, 1st Floor,
  • New Hira Building, 1st Parsiwada,
  • Nanubhai Desai Road,
  • Mumbai-400004.
  • Tel : +91-22-23868818/23854314
  • Fax : +91-22-23878403, +91-22- 23850329
  • E-mail ID: mehta@greatmetal.com
  • Website : www.greatmetal.com
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Industries We Serve

  • Oil & Gas
  • Petrochemicals
  • Agro chemicals
  • Fire Safety Product
  • Shipping
  • Engineering
  • Dairy & Food Processing
  • pharmaceutical
  • Automobiles
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Our Certificate

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