Ninthore Overseas is one of the Leading Manufacturer And Exporter Of High Quality Alloy Steel P1 Pipes, which cannot be used in hydrochloric acid due to the risk of localized and uniform corrosion. These Alloy Steel P1 Seamless Pipes is especially useful in offshore oil and gas applications and in wells by means of either naturally high brine levels or where brine has been injected to enhance recovery. Our Alloy Steel P1 Welded Pipes is not recommended for applications which require long exposures to temperatures in excess of 570 Degree F because of the increased risk of a reduction in toughness.

Alloy Steel P1 Pipes Manufacturer In India | Alloy Steel P1 Pipes Manufacturer In Mumbai | Alloy Steel P1 Pipes Exporter In India | Alloy Steel P1 Pipes Exporter In Mumbai | Alloy Steel P1 Pipes Supplier In India | Alloy Steel P1 Pipes Supplier In Mumbai | Alloy Steel P1 Pipes Stockist In India | Alloy Steel P1 Pipes Stockist In Mumbai
Alloy Steel P1 Pipes

Alloy Steel P1 Pipes

In dilute sulphuric acid contaminated with chloride ions, these Alloy Steel P1 EFW Pipes has better corrosion resistance than other alloys, which is a highly alloyed austenitic steel grade specially designed to resist pure sulphuric acid. However, our Alloy Steel P1 ERW Pipes can be used in dilute hydrochloric acid, which further has excellent localized pitting resistance. Pitting need not be a risk in the zone below the borderline of these Alloy Steel P1 Round Pipes, but crevices must be avoided.

Through additions of chromium, molybdenum and nitrogen in our Alloy Steel P1 Square Pipes, localized corrosion such as pitting and crevice attack are improved. Solution annealing of these Alloy Steel P1 Rectangular Pipes should be performed at the temperature range from 1025 Degree C to 1125 Degree C followed by being quenched in water or rapidly cooled by other means.

Alloy Steel P1 Seamless Pipes Specifications
Specifications : ASTM A 335 ASME SA 335
Dimensions : ASTM, ASME and API
Size : 1/8″NB TO 30″NB IN
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Length : Within 13500mm
Type : Seamless / Fabricated
Form : Round, Hydraulic Etc
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End, Treaded
Alloy Steel P1 Pipes Chemical Composition
Alloy Steel P1 C Cr Mn Mo P S Si
0.05 – 0.15 1.00 – 1.50 0.30 – 0.60 0.44 – 0.65 0.025 max 0.025 max 0.50 – 1.00
Alloy Steel P1 Pipe Mechanical Properties
Tensile Strength, MPa Yield Strength, MPa Elongation
415 min 205 min 30 min
Outside Diameter & Tolerance
ASTM A450 Hot rolled Outside Diameter, mm Tolerance, mm
OD≤101.6 +0.4/-0.8
101.6<OD≤190.5 +0.4/-1.2
190.5<OD≤228.6 +0.4/-1.6
Cold Drawn Outside Diameter, mm Tolerance, mm
OD<25.4 ±0.10
25.4≤OD≤38.1 ±0.15
38.1<OD<50.8 ±0.20
50.8≤OD<63.5 ±0.25
63.5≤OD<76.2 ±0.30
76.2≤OD≤101.6 ±0.38
101.6<OD≤190.5 +0.38/-0.64
190.5<OD≤228.6 +0.38/-1.14
ASTM A530 & ASTM A335 NPS Outside Diameter, inch Tolerance, mm
1/8≤OD≤1-1/2 ±0.40
1-1/2<OD≤4 ±0.79
4<OD≤8 +1.59/-0.79
8<OD≤12 +2.38/-0.79
OD>12 ±1%
Alloy Steel P1 Seamless / High Pressure Pipes Application Industries
  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry
P1 Alloy Steel Pipes Test Certificates

We at Ninthore Overseas provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.

• EN 10204/3.1B,
• Raw Materials Certificate
• 100% Radiography Test Report
• Third Party Inspection Report, etc

Material Testing
We at Ninthore Overseas ensure that all our materials go through strict quality tests before dispatching them to our clients.

• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis – Spectro Analysis
• Positive Material Identification – PMI Testing
• Flattening Test
• Micro and Macro Test
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test


• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)