ASTM A335 GR P12 Alloy Steel Seamless Pipes - Manufacturer, Supplier

ASTM A335 Grade P12 Seamless Pipes Supplier in Mumbai, India

Piyush Steel is a trusted manufacturer and supplier of ASTM A335 Gr P12 Alloy Steel Seamless Pipes, offering high-quality chrome-moly pipes that are suitable for high-temperature and high-pressure applications. These Grade P12 seamless alloy steel pipes are designed for use in boilers, heat exchangers, superheaters, and petrochemical systems. Manufactured in accordance with ASTM A335/ASME SA335 standards, these pipes provide excellent mechanical strength, thermal stability, and corrosion resistance. With strict quality control and global certifications, we supply A335 P12 alloy steel pipes that meet the demanding requirements of both domestic and international markets.

Our ASTM A335 P12 seamless pipes are made from a low-carbon chromium-molybdenum alloy, which enhances their strength and resistance to oxidation at elevated temperatures. The alloy contains essential elements such as chromium (0.8% to 1.25%) and molybdenum (0.44% to 0.65%), making the pipes ideal for applications requiring long-term service in hot environments. These high-temperature alloy steel pipes also offer excellent resistance to pitting, scaling, and thermal fatigue. With a minimum strength of 415 MPa and a yield strength over 205 MPa, P12 alloy pipes provide reliable performance in tough industrial conditions.

One of the major advantages of A335 Grade P12 seamless pipes is their superior weldability and formability. These pipes can be easily fabricated and welded using conventional methods, and their low carbon content minimizes the risk of weld cracking. To achieve optimum mechanical properties, our pipes are supplied in normalized and tempered or fully annealed conditions. We also offer customized post-weld heat treatments (PWHT) to enhance structural integrity when the pipes are used in pressure vessels or steam pipelines. Whether you need straight lengths or custom-cut sizes, Piyush Steel delivers products that ensure safety and efficiency in service.

We serve a broad range of industries, including oil, gas, chemical processing, and thermal power, fertilizer plants, and refineries. Our P12 seamless steel pipes are especially popular in projects involving high-pressure steam, sulfuric acid transport, and heat recovery systems. Compared to other grades like P11 or P22, P12 offers a balanced combination of thermal stability, corrosion resistance, and affordability. As an experienced P12 Alloy Steel Pipe Manufacturer in India, we understand the critical nature of these applications and supply each order with mill test certificates, inspection reports, and full traceability.

At Piyush Steel, we stock and supply ASTM A335 Gr P12 seamless alloy steel pipes in sizes ranging from 1/2" to 24" NB with schedules from SCH 40 to SCH XXS. Available in plain end, beveled end, and threaded end forms, our pipes meet the highest dimensional accuracy and surface finish requirements. We support third-party inspections, ultrasonic testing, and NACE compliance on request. With ready stock and export-ready packaging, we cater to urgent shutdowns and long-term supply contracts across India and abroad. If you are looking for reliable, high-performance A335 P12 seamless pipes, we offer durable solutions at competitive prices.

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ASME SA335 P12 Alloy Steel Seamless Pipes Equivalent Grades

Alloy Steel P12 Pipe Forms in Stock

Stock Size Range and Specifications For Alloy Steel P12 Seamless Pipe

Specification : ASTM A335 / ASME SA335

Dimension Standard : ANSI B36.10

Outside Diameter : 19.05mm – 114.3mm

Wall Thickness : 2.0mm – 14 mm

Type : Seamless

Form : Round, Square, Rectangular, Oval, Hydraulic Etc

Length : max 16000mm

Delivery Condition : Annealed and Pickled, Polished, Bright Annealed, Cold Drawn

Inspection, Test Reports : Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports

Packing : Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests

Specials : Sizes and Specifications other than above can be manufactured on request

Chemical Composition of Alloy Steel P12 Seamless Pipes

Mechanical Properties of Alloy Steel P12 / K11562 / 1.7335 Pipes

Markings On The Alloy Steel P12 Seamless Pipes

The full identification of the pipe should be continuously marked down its whole length, including :

•   Nominal Pipe Size (Nominal Bore)
•   Schedule (Wall Thickness)
•   Specification
•   Grade
•   Method of Manufacturer (Seamless)
•   Heat Number
•   Manufacturer’s Name or Symbol

Alloy Steel Gr P12 Pipes Application Industries

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