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ASME B16.11 SS Nipples, Stainless Steel Pipe Nipple, Alloy Steel Nipples, Nickel Alloy Nipples Exporter.

Kobs India is involved in offering a widespread range of Forged Nipple Pipe Fittings at reasonable prices to our clienteles. As a supplier, manufacturer, stockiest, and exporter, we offer these Forged Barrel Fittings in different sizes and thickness.

They are specially designed to lift and transport the widest variety of loads in stores and warehouse. These fittings are strong torsion resistant steel construction. Meanwhile, forged steel fittings will ensure that neither fumes, nor the chemical or oil itself leaks from your piping connection. Kobs India is the lead manufacture, Exporter & Supplier of forged nipple that has being as per national and international standard quality of raw material and thus make sure of their durability and high quality.

Also, forged steel fittings are the best options when transferring oil, gas or chemicals. We supply a wide assortment of these fittings that is used in various piping, construction and engineering works. These Forged Fittings are can further be made-to-order as per the detailed requirements given by our valuable clienteles.


Standards Specification:

  • Specifications : ASTM A182 / ASTM SA182
  • Standerd : ASME 16.11, MSS Sp-79, 95, 97, BS 3799
  • Size : ½”Inch and 4”Inch
  • Class : 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
  • Types : Socketweld Fitting, Screwed-Threaded Fitting

Material & Grade :

Stainless Steel :
Grade: 304 (1.4301), 304L(1.4307), 304H (1.4948), 309 (1.4828), 309S, 310, 310S (1.4845), 316( 1.4401), 316H, 316L ( 1.4404 /1.4432) , 317, 317L (1.4438), 321 (1.4541), 321 H(1.4878), 347 (1.4550), 347H (1.4961), 904L (1.4539)

Chemical Composition 304 (1.4301), 304L(1.4307), 304H (1.4948)

C Mn Si P S Cr Ni N
304 (1.4301) 0.07max 2.0max 0.75max 0.045max 0.03max min: 18.0 max: 20.0 min: 8.0 max: 10.5
304L(1.4307) 0.03max 2.0max 0.75max 0.045max 0.03max min: 18.0 max: 20.0 min: 8.0 max: 12.0 0.10 max
304H (1.4948) min: 0.04 max:0.10 Max: 2.0 Max:0.75 Max : 0.045 Max: 0.030 min: 18.0 max: 20.0 min: 8.0 max: 10.5 -

Chemical Composition 309 (1.4828), 310, 310S (1.4845)

SS 309 (1.4828)SS 310SS 310S (1.4845)
Ni 14 max 19 – 22 19 – 22
Cr 23 max 24 – 26 24 – 26
C 0.20 max 0.25 max 0.08 max
Fe 60 max Balance
Mn 2 max 2 max 2 max
Si 1 max 1.50 max 1.50 max
S 0.030 max 0.03 max 0.03 max
P 0.045 max 0.045 max 0.045 max

Chemical Composition 316( 1.4401), 316L ( 1.4404 /1.4432), 316H

C Mn Si P S Cr Mo Ni N
316( 1.4401)
0.08
max
2.0
max
0.75
max
0.045
max
0.03
max
min: 16.0
max: 18.0
min: 2.0
max: 3.0
min: 10.0
max: 14.0
0.10
max
316L ( 1.4404 /1.4432)
0.03
max
2.0
max
0.75
max
0.045
max
0.03
max
min: 16.0
max: 18.0
min: 2.0
max: 3.0
min: 10.0
max: 14.0
0.10
max
316H - - - - - 16.0 2.00 10.0 -
0.08 2 0.75 0.045 0.03 18.0 3.00 14.0 0.1

Chemical Composition 317, 317L (1.4438)

Grade C Mn Si P S Cr Mo Ni N
317 0.08 max 2 max 1 max 0.040 max 0.03 max 18 – 20 3 – 4 11 – 14 -
317L (1.4438) 0.035 max 2 max 1 max 0.040 max 0.03 max 18 – 20 3 – 4 11 – 15 -

Chemical Composition 321 (1.4541), 321 H(1.4878)

% Cr Ni C Si Mn P S N Ti Fe
321 (1.4541) min:17.0
max:19.0
min: 9.0
max:12.0
max:0.08 max:0.75 max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
max:0.70
Balance
321 H(1.4878) min:17.0
max:19.0
min: 9.0
max:12.0
min:0.04
max:0.10
min:18.0
max:20.0
max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
max:0.70
Balance

Chemical Composition 347 (1.4550), 347H (1.4961)

C Cr Mn Ni P S Si Cb/Ta
347 (1.4550) 0.08 max min: 17.0
max: 20.0
2.0 max min: 9.0
max: 13.0
0.04 max 0.30
max
0.75
max
min:10x C
max: 1.0
347H (1.4961) min: 0.04
max: 0.10
min: 17.0
max: 20.0
2.0 max min: 9.0
max: 13.0
0.03 max 0.30
max
0.75
max
min:10x C
max: 1.0

Chemical Composition 904L (1.4539)

C Cr Cu Mn Mo Ni P S
Max     Max     Max Max
0.02 19.0-23.0 2.0 4.0-5.0 23.0-28.0 0.045 0.035 1.0

Mechanical Properties 309 (1.4828) / 310 / 310S (1.4845)

Grade Tensile Strength ksi (min) Yield Strength 0.2% ksi (min) Elongation % Hardness (Brinell) MAX Hardness (Rockwell B) MAX
304 (1.4301) 75 30 40 201 92
304L(1.4307) 70 25 40 201 92
304H (1.4948) 75 30 40 201 92

Mechanical Properties 316( 1.4401), 316L ( 1.4404 /1.4432), 316H

Grade Tensile Strength
ksi (min)
Yield Strength
0.2% ksi (min)
Elongation % Hardness (Brinell) MAX Hardness
(Rockwell B) MAX
316( 1.4401)
75 30 40 217 95
316L ( 1.4404 /1.4432)
70 25 40 217 95
316TI 515(Mpa) 205(Mpa) 35 205 75

Mechanical Properties 317, 317L (1.4438)

Density 8.0 g/cm3
Melting Point 1454 °C (2650 °F)
Tensile Strength Psi – 75000 , MPa – 515
Yield Strength (0.2%Offset) Psi – 30000 , MPa – 205
Elongation 35 %

Mechanical Properties 321 (1.4541), 321 H(1.4878)

Grade Tensile Strength
ksi (min.)
Yield Strength 0.2%
Offset ksi (min.)
Elongation -
% in
50 mm (min.)
Hardness
(Brinell) MAX
321 (1.4541)/321 H(1.4878) 75 30 40 217

Mechanical Properties 347 (1.4550), 347H (1.4961)

Grade Tensile Strength ksi (MPa) min Yield Strength 0.2% ksi offset ksi (MPa) min Elongation (% in 50mm) min Hardness (Brinell) MAX Hardness (Rockwell B) MAX
347 (1.4550)/347H (1.4961) 75
(515)
30
(205)
40 201 95

Mechanical Properties 904L (1.4539)

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) Brinell (HB)
904L (1.4539) 490 220 36 70-90 typical 150

Product Features:

  • Sturdy design
  • Accurate dimensions
  • High strength
  • Corrosion resistant
  • Can be easily radio graphed for flaw detection
  • Offer permanent leakproof
  • Deliver a framework that uses atleast space

Other grades also available :

Duplex Steel:
Grade: 2205 (1.4507)
Nickel :
Grade: Nickel 200, Nickel 201
Super Duplex Steel:
Grade: 2507 (UNS S32750), Z100
Inconel :
Grade: Inconel 600 (2.4640), Inconel 601 (2.4851), Inconel 625 (2.4856), Inconel 718(2.4668)
Titanium :
Grade: Gr.1 (3.7025) , Gr.2 (3.7035) , Gr.3(3.7055) , Gr.5(3.7164/65), Gr. 7(3.7235) , Gr. 11 (3.7225)
Monel :
Grade: Monel 400, Monel K500 (2.4375), Monel R-405
Hastalloy :
Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
Incoloy :
Grade: Incoloy 800(2.4958), Incoloy 800H, Incoloy 800HT

Manufacturing Process :

The principal methods of hot working are extrusion, drawing, forging and rolling. Rolling is the most extensive employed forming process, though some limitations may apply to the process. Rolling mainly consists of three major sub-categories: flat rolling, shape rolling (with specifically designed roll grooves) and pipe rolling (including piercing). Forging may be sub-categorized as hamming, pressing, etc. .

Forging may be performed under hammers, in mechanical presses and upsetters or by a method known as roll forging. Pressing generally includes the manufacture of forged articles in hydraulic presses. Extrusion usually is performed in hydraulic presses which force the hot steel through a die. Rolling is performed in rolling mills of a variety of types. .

The two principal reasons for perform metal forming at elevated temperatures (hot working) are to reduce the forming loads through the reduction of the resistance of the steel to deformation, and to develop preferred metallurgical structures for strength and ductility of the finish products.

The most appropriate manufacturing method of a product will be decided with consideration of its material, sizes, shape, use, standards and other properties.

Product Usage & Application :

  • Useful in Paper & Pulp Companies
  • Useful in High Pressure Applications
  • Useful in Oil and Gas Industry
  • Useful in Chemical Refinery
  • Useful in Pipeline
  • Useful in High Temperature Application
  • Useful in Water Pipe Line
  • Useful in Nuclear Power Plants
  • Useful in Food Processing and Dairy Industries
  • Useful in Boiler & Heat Exchangers

Packing :

  • Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging.
  • We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,
    • Shrink-wrapped
    • Carton boxes
    • Wooden pallets
    • Wooden boxes
    • Wooden crates

Why Choose Us :

  • You can get the perfect material according to your requirement at the least possible price.
  • We also offer Reworks, FOB, CFR, CIF, and door to door delivery prices. We suggest you to do deal for shipping which will be quite economical.
  • The materials we provide are completely verifiable, right from raw material test certificate to the final dimensional statement.(Reports will show on requirement)
  • e guarantee to give a response within 24hours(usually in the same hour)
  • You can get stock alternatives, mill deliveries with minimizing manufacturing time.
  • We are fully dedicated to our customers. If it will not possible to meet your requirements after examining all options, we will not mislead you by making false promises which will create good customer relations.

Tests we carry out (including both Destructive and Non-Destructive) :

  • Positive material recognition
  • Mechanical examining like tensile, Elongation and reduction of area.
  • Large-scale test
  • Chemical examination-Spectro analysis
  • Firmness test
  • Pitting protection test
  • Small tests
  • X-ray test
  • Impact analysis
  • Eddy current examining
  • Hydrostatic analysis
  • Prompt test

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