Duplex S31803 Flanges:

Material Specfication and Dimension Standards:

Product Category Material Specification as per ASME/ASTM Dimension Standards
Forged Flanges ASME SA182/182M F51, ASTM A182/182M F51 ANSI B16.5, ASME B16.5, MSS SP-44, ASME B16.47, API 605, ASME B16.36, ANSI B16.36, BS 3293, ASME B16.48, API 590, API 6A, API 6B, JIS B2220, DIN 2573, DIN 2576, DIN 2642, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2565, DIN 2566, DIN 2527, UNI 2276, UNI 2277, UNI 2278, UNI 6089, UNI 6090, UNI 2280, UNI 2283, UNI 2284, UNI 2253, UNI 2254, UNI 6092, UNI 6093, EN 1092-1 TYPE 1, EN 1092-1 TYPE 2, EN 1092-1 TYPE 11, EN 1092-1 TYPE 13, EN 1092-1 TYPE 5 (PN6, PN10, PN16, PN25, PN40

Size Range:

Dimension Standards Size Range Ratings
ASME/ANSI B16.5 1/2" to 24" 150# to 2500#
MSS SP 44 12" TO 60" 150# to 900#
ASME/B16.47/API 605 26" TO 60"  
ASME/ANSI/B16.36 1" TO 24" 300# TO 2500#
BS 3293 26" TO 48" 150# TO 600#
ASME B16.48 / API 590 1/2" TO 24" 150# TO 2500#
API 6A API 6B 2 1/6" TO 30" 2000 PSI TO 20000 PSI
DIN DN10 TO DN3600 PN6 TO PN160

Notes : We can meet other dimensions outside the above mentioned range in special cases.

Why choose Us:

  • More than 30 years of expirience in this business
  • You can get stock options, mill deliveries with shortest manufacturing time
  • we assure you of as response in 24 hours (generally in same hour)
  • You will get the right material as per your requirement at the minimum possible price, (beware of unrealistic offers from other vendors)
  • 100% Fulfilment of commitments, if we cannot meet your requirement even after checking all options we will not give false assurance, this helps us in maintaining good relations with our customers
  • We can offer Exworks, FOB, CFR, CIF, Door to Door Delivery prices. We suggest that you let us do the shipping, because it will be cost effective as well as efficient
  • The materials we supply come with full traceability, right from raw material test certificate to final dimensional report. (Reports available on request)

Documents:

  • Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
  • Commercial Invoice including HS Code
  • Packing List including number of boxes, net weight and gross weight, Marks and Numbers
  • Fumigation Certificates
  • Letter of Gurantee
  • Material Test Certificates as per EN 10204 3.1, EN 10204 3.2
  • Test Certificates certifying NACE MR0103, NACE MR0175
  • Raw Material Test Reports
  • Heat Treatment Charts
  • Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
  • MATERIAL TRACEABILITY RECORDS
  • Quality Assurance Plan (QAP)
  • NABL approved Laboratory Test Reports
  •  

Testings (Destructive, Non Destructive):

  • Positive Material Identification - PMI Testing
  • Chemical Analysis - Spectro Analysis
  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Micro Test
  • Macro Test
  • Hardness Test
  • Pitting Resistance Test
  • Intergranular Corrosion (IGC) Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Radiography Test
  • Dye Penetrant Test (DP Test)
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test
  •  

Packing:

  • We understand the importance of packaging specially in case of international shipments as the consignment has to go through a number of channels to reach the final destination, thus we take proper care of packing.
  • We pack our goods in a various ways depending on the products. The different ways in which our products are packed are:
    • Shrink-wrapped
    • Wooden Boxes
    • Wooden Pallets
    • Wooden Crates
    • Carton boxes

Marking:

  • All our products will have complete marking details which are co-related to the test certificates we supply.
  • In case of orders for cut piece of Pipes, Sheets or Round Bars, the marking is transferred from the product from which it is cut. In such cases we provide Letter confirming the marking transfer and picture of the product from which it is cut.

Delivery Time:

  • If the items are available in stock, we take 2 days from the date of receipt of advance payment to clear the shipment and send it to port.
  • And in-case the items are not availabe in stock, the time taken for manufacturing depends on the size, quantity and grade.
  • However we can claim the fact that we can compete with anyone in India on Delivery time and most of the time our production time is the least.
  • We have tied up with strong logistic partners in India which can undertake any type of shipping activites and make sure that there is no delay in shipment.

Price Basis:

  • We can offer any of the following price basis depending on your requirement:
    • Ex-works
    • FOB Nhava Sheva
    • CFR, CIF, CPT your destination port
    • Door to Door Delivery Duty Paid as well as Duty Unpaid

Inspection:

  • We welcome stage wise inspection, final stage inspection from any of your representative or third party inspection agencies.
  • We regularly have inspections ongoing at our premises from internationally acclaimed Inspection Agencies such as TUV, Llyods, BVIS, SGS, DNV etc.

Additional Information:

  • We offer pipes on cut to size basis also, if your project demands pipes of particular lengths, you can feel free to contact us.
  • We have good amount of stock to fulfill your urgent requirements, however if a certain item is not in stock, please don’t hesitate as we also process small size/quantity orders, we hardly have minimum order quantity obligations.
  • We also offer cut piece for plates, sheets. We can cut them as per your sizes. We can also cut circles and rings as per your dimensions. The cutting is done through water-jet and laserjet and plasma technologies.

Manufacturers we keep stock of:

Pipes and Tubes
Benteler Germany
Corus - British Steel United Kingdom
Dalmine (Tenaris Group) (incorporating Tad Tubi) Italy
Europipe - GTS Ind. France
Europipe - Mannes Germany
Napa Pipe Co USA
Nippon Steel & Sumitomo Metal Japan
NKK (Tenaris Group) Japan
NSC Japan
Siderca (Tenaris Group) Argentina
Vallourec France
Van Leeuwen Buizen Netherlands
Butting Germany
DMV Stainless International
Sandvik Sweden
Schoeller Bleckmann Austria
Sanyo Japan
InoxTech Italy
Seah South Korea
Buttweld and Forged Fittings & Flanges
Benkan Japan
Thai Benkan Thailand
BKL United Kingdom
Erne Austria
Interfit France
Petrol Raccord Italy
Raccordi Forgiati Italy
Mega Italy
Ulma Italy
Delcorte France
Bebitz Germany
Bruck Gmbh Germany
Melesi Italy
Metalfar Italy
Kofco Korea
Tube Fittings
Parker
Swagelok

Other Product Names(Equivalent):

UNS Nos Other Names
UNS S3103 duplex steel, dss steel, duplex stainless steel, F51

Forms:

Weld Neck Flanges Blind Flanges Socket Weld Flanges Slip On Flanges Screwed Flanges Lap Joint Flanges
Long Weld Neck Flanges Orifice Flanges Spectacle Blinds Spacers and Spades EN Flanges DIN Flanges
Nipo Flanges Anchor Flanges Drip Rings Nozzles  

Chemical Properties:

Chemical Composition, %:

Cr Ni Mo C N Mn Si P S Fe
22.0-23.0 4.50-6.50 3.00-3.50 .030 Max 0.14-0.20 2.00 Max 1.00 Max .030 Max .020 Max Balance

Mechanical Properties:

Specified Tensile Properties ASTM A240:

Ultimate Tensile Strength, ksi Minimum .2% Yield Strength, ksi Minimum Hardness Max.
95 65 31 Rockwell C

Application:

  • We supply Duplex Stainless Steel to Pressure Vessel, Tanks and Heat Exchanger Manufacturers used in Chemical Process Plants and Oil and Gas Exploration
  • DSS is used a lot in Marine, Water and Waste Water Treatment Plants
  • Duplex is a big yes for Effluent scrubbing systems