Alloy Steel Pipe Manufacturers & Suppliers – A335 P5, P9, P11, P22, P91

  • Metallica is one of the biggest suppliers of alloy steel seamless as well as welded steel pipes in India, with over 1500 tons of stock in Mumbai, Maharashtra India. We sell our alloy steel pipe products throughout India, and to international clients. Metallica also stocks and suppliers a wide range of stock of alloy steel pipe fittings, alloy steel flanges and valves, and all our products are supplied with complete product certification.

  • We can supply our seamless alloy steel pipe products not only in industry-standard lengths and diameters, but also in custom length and diameters. Our range of seamless steel pipes encompasses size range from 1/4 NPS to 24 NPS in thickness upto SCH XXS. All our alloy steel pipe products are sourced from domestic mills or are imported from reputed mills across the globe and stocked in India.

  • Metallica may not be the biggest manufacturer of alloy steel pipes, but we are the biggest seller of steel pipes in India. Be it carbon steel pipes, alloy steel pipes or stainless steel pipes, we hold extensive stock to give our customers same day deliveries. ASTM A335, ASTM A333 and ASTM A213 are the most widely used standards according to which alloy steel seamless pipes are manufactured across the globe.

  • In addition to supplying alloy steel pipes and tubes, Metallica also offers fabrication services that include cutting, bending, shearing, saw cutting and welding for all of kinds of seamless steel pipes and tubes. Our primary objective is to ensure that our customers receive alloy steel pipes and tubes at competitive prices, together with excellent service.

Production & Stock Range of Alloy Steel Pipes & Tubes

Product Alloy Steel Pipe
Shapes Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, Pan Cake Coils, Hydraulic Tubes
Types Seamless / ERW / Welded / Fabricated / CDW
Size (NB sizes) 1/8″ to 42″
Thickness SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules, Upto 12mm thk
Common Grades ASTM A335 P1, ASTM A335 P2, ASTM A335 P5, ASTM A335 P9, ASTM A335 P11, ASTM A335 P12, ASTM A335 P22, ASTM A335 P23, ASTM A335 P91, ASTM A335 P92, ASTM A213 T2, ASTM A213 T5, ASTM A213 T5b, ASTM A213 T5c, ASTM A213 T9, ASTM A213 T11, ASTM A213 T12, ASTM A213 T22, ASTM A213 T23, ASTM A213 T91, ASTM A213 T92
Fittings Type Seamless Butt Weld, Flanges, Black, Galvanised Fittings
Other Fittings Elbows, Tees, Reducers, Caps, Stub Ends, Flanges (ANSI, Table E, D and H)
End Connections Plain, Bevel, Screwed, Threaded
Inspection Mill Test Certificates, EN 10204 3.1 and Various Chemical and Mechanical Tests Conducted like PMI Test, Visual Inspection, Third Party Inspection, NABL Approved Lab Reports, Destructive Test, Non Destructive Test, India Boiler Regulations (IBR) Test Certificate
Surface Finish Black Painting, Anti-Corrosion Oil, Galvanised Finish, Finish as per customer Requirements
Delivery Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests

Do you want to buy Alloy Steel Pipes at Lowest Prices in India?

We are one of the biggest volume buyers and sellers of alloy steel pipes in grades ASTM A335 P5 to P91. If you have any inquiries related to alloy steel pipes and tubes, please feel free to contact us on

Full Range of Alloy Steel Products

Alloy Steel Pipe ELBOWS 45°, 90°, 180°, ASME B16. 9 Nut and Bolts
Alloy Steel Induction Bends ASTM A519: 1010-1045, 4130-4142, 5135
Gaskets Alloy Steel Tees Straight, Reducing,
Alloy Steel Concentric & Eccentric Reducers Alloy Steel Forged Steel Fittings: ASME B16.11
A333 Grade Pipe JIS Specification Pipe & Tube
Alloy Steel Pipe Flanges as per ANSI B16.5 ASTM A335 Grade P22 Alloy Steel Pipe
ASME SA335 Grade P5 ASTM A335 P11
ASTM A335 P12 ASTM A335 P91 Pipe
ASME SA213 Grade T11 SA335 Grade P9
Alloy Steel Pipe Manufacturers Alloy Steel Tube Manufacturers
Alloy Steel Seamless Pipe Manufacturers Alloy Steel Seamless Tube Manufacturers
Alloy Steel Pipe Stockist Alloy Steel Pipe Suppliers

What is an Alloy Steel?

Alloy steels contain alloying elements (e.g. manganese, silicon, nickel, titanium, copper, chromium, and aluminum) in varying proportions in order to manipulate the steel’s properties, such as its hardenability, corrosion resistance, strength, formability, weldability or ductility. The difference is somewhat uniform, but to make it distinguishable, all steel alloyed with higher than 8% of its weight of elements other than carbon and alloy is considered high-alloy steel. Alloyed steels are harder, more durable and more resistant to corrosion. Alloy steels with carbon levels of medium to elevated rates are difficult to weld. However, if the carbon levels are reduced to 1% to 3%, such alloy metals can achieve greater formability and weldability, thus, improved strength.

Applications of Alloy Steel

Alloy steel seamless pipes are widely used for low and medium pressure fluid transportation pipeline, casing tube, boiler pipe, petroleum and natural gas industry, chemistry industry, power generation industry,  transformers, agriculture, bearings, general engineering, automotive, hydraulics, railway, mining, construction, aerospace, medical, defense and electric motors. Alloy steels grade P91 is mainly used for power industry. For welded construction, the ASME Boiler and Pressure Vessel Code limits the carbon content to less than 0.35%. Alloy steel is ideally suited for applications that require higher strength, improved toughness or better wear resistance than standard carbon steel grades. Alloy Steels are used in boiler construction because they are inexpensive, readily available, easily formed and welded to the desired shape and, within the broad limits, are oxidation- and corrosion-resistant enough to provide satisfactory service for many years to many industries. Alloy Steel is used across a range of highly demanding applications within the aerospace and power (nuclear) industries. Alloy Steel is also found in applications where its response to magnetism is important, in transformers and electric motors for example.

Standards & Codes Specification

Commonly Used Standards and Codes
Sr. No Code Standards
1 ANSI B16.11 Pipe Flanges and Flanged Fittings.
2 ANSI B 16.5 Flanges
3 MSS SP-44 Large Dia Flanges.
4 ASME B 16.47 (SERIES A & B) Large Dia Flanges.
5 DIN Flanges
6 BS 4504 Flanges
7 ASTM A105 Forging, Carbon Steel for piping components
8 ASTM A182 Forged & Rolled Alloy Steel Pipe Flanges. Forged Fittings & Valves and parts for high temperature services.
9 ASTM A 350 Carbon & Low Alloy Steel, requiring notch toughness testing for piping components
10 ASTM A 515 Standard specifications for Pressure Vessel-Plates Carbon Steel for intermediate and higher temperature services.
11 ASTM A 516 Standard Specifications for Pressure Vessel Plates Carbon steel for Moderate and lower temperature services.
12 ASTM A 517 Standard specifications for Pressure Vessel Plates Alloy Steel High Strength Quenched & Tempered.
13 ASTM A 333 Standard specification for Seamless & Welded Steel Pipe for Low Temperature Services.
14 ASTM A 335 Standard Specification for Seamless Ferritic Alloy steels pipe for High Temperature Services.
15 IS 2002 Specification for steels Plates for Boilers.
16 IS 2062 Specification for weldable structure steel.
17 IS 1239 Mild Steel Tubes Tubular & other wrought steel fittings specification.
18 IS 3589 Mild Steel Tubes Tubular & other wrought steel fittings specification.

Heat Treatment of Alloy Steel Pipes

There are two methods to improve the properties of steel material. One method is to adjust the chemical composition, named alloying method. The other method is heat treatment. In the field of modern industrial technology, heat treatment improve steel pipe performance at dominate position. Heat treatment methods for carbon and alloy steel pipe include 4 mainly types: normalizing, annealing, quenching and tempering. It will improve steel material mechanical properties, uniform chemical composition, and machinability.
  • Pipe may be either hot finished or cold drawn with the finishing treatment as required.
  • Grade P2 and P12 — the steel shall be made by coarse grain melting practice. Specific limits, if any, on grain size or deoxidation practice shall be a matter of agreement between the manufacturer and purchaser.
  • All pipes of grades except P5c, P23, P91, P92, P122, and P911 shall be reheated and furnished in the full-annealed, isothermal annealed, or normalized and tempered condition. If furnished in the normalized and tempered condition, the minimum tempering temperature for Grades P5, P5b, P9, P21, and P22 shall be 1250°F [675°C], the minimum tempering temperature for Grades P1, P2, P11, P12, and P15 shall be 1200°F [650°C].
  • NOTE – It is recommended that the temperature for tempering should be at least 100°F [50°C] above the intended service temperature; consequently, the purchaser should advise the manufacturer if the service temperature is to be over 1100°F [600°C].
  • Pipe of Grades P1, P2, and P12, either hot finished or cold drawn, may be given a final heat treatment at 1200°F [650°C] to 1300°F [705°C] instead of heat treatments as specified above.
  • All pipe of Grades P5c shall be given a final heat treatment in the range from 1325°F [715°C] to 1375°F [745°C].
  • NOTE – Certain of the ferritic steels covered by this specification will harden if cooled rapidly from above their critical temperature. Some will air harden, that is, become hardened to an undesirable degree when cooled in air from high temperatures. Therefore, operations involving heating such steels above their critical temperatures, such as welding, flanging and hot bending, should be followed by suitable heat treatment.
  • Grades P92 and P911 shall be normalized at 1900°F [1040°C] minimum and tempered at 1350°F [730°C] minimum as a final heat treatment.
  • Grade P122 shall be normalized at 1900°F [1040°C] minimum, and tempered at 1350°F [730°C] minimum as a final heat treatment.
  • Grade P23 shall be normalized at 1900°F [1040°C] minimum with air cooling or accelerated cooling and tempered at 1350°F [730°C] minimum as a final heat treatment.
  • Except when Supplementary Requirement S7 is specified by the purchaser, Grade P91 shall be normalized at 1900°F [1040°C] minimum, and tempered at 1350°F [730°C] minimum as a final heat treatment. Alternatively, liquid quenching and tempering is allowed for thicknesses above 3 inch when mutually agreed upon between the manufacturer and the purchaser. In this case the pipe shall be quenched from 1900°F [1040°C] minimum and tempered at 1350°F [730°C] minimum as final heat treatment.

Solution Treatment For Alloy-based Steel Pipe

Heating an alloy to a proper temperature, preserve it at this temperature long enough to cause or more constituents to change into a solid solution, then cooling it at rapid rate to hold these constituents in solution. There are various of cast and wrought nickel-based alloys that can achieve different required performances through solution treatment or by precipitation age hardening. Characteristics as room temperature and elevated temperature mechanical strength, corrosion resistance and oxidation resistance will be significantly enhanced by this heat treatment. Many nickel-based alloys develop their desired properties solely through the solution treatment, like Hastelloy and nickel alloy steel pipe. During solution treatment, the carbide and various alloying elements are dissolved uniformly in the austenite. Cooling rapidly will make carbon and alloy elements too late to precipitate, and obtain the heat treatment process of single austenite tissue. The solution treatment can uniform internal structure and chemical compostion. It can also restore the corrosion resistance for Hastelloy and nickel alloy steel pipe.