Alloy Steel P22 Pipes Exporter Supplier in Mumbai, India

Alloy Steel P22 Seamless Pipe Specifications

Specifications for these pipes follow ASTM A335 and ASME SA335, covering size, thickness, and end finish. The table below lists the working range for seamless pipe orders.

Parameter	Specification
Dimensions	ASTM, ASME, and API
Standard	ASTM A 335 / ASME SA 335
Size	1/8" NB to 30" NB
Thickness	2.0 mm to 14 mm
Outer Diameter	19.05 mm to 114.3 mm
Form	Round, Square, Rectangular, Hydraulic
End	Plain End, Beveled End, Threaded
Length	Single Random, Double Random, Required Length, Custom up to 12 Meters
Schedules	SCH 40, SCH 80, SCH 160, SCH XS, and SCH XXS are all schedules up to 12 mm in thickness.

Key Benefits of Alloy Steel P22 Pipes

The chromium-molybdenum composition of P22 gives it a set of properties that carbon steel pipe cannot match at high temperatures. These are the main ones buyers ask about:

- High-Temperature Resistance

- Superior High-Pressure Performance

- Enhanced Chromium and Molybdenum Composition

- Excellent Corrosion and Oxidation Resistance

- Good Weldability and Formability

- High Strength-to-Weight Ratio

- Long Service Life and Cost Efficiency

List of Alloy Steel P22 Seamless Pipe

Seamless Alloy Steel P22 Pipe

Alloy Steel P22 Seamless Pipes

Alloy Steel P22 Seamless Pipes 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%

ASME SA335 Alloy Steel P22 Seamless Pipe Chemical Composition

C, %	Mn, %	P, %	S, %	Si, %	Cr, %	Mo, %
0.05 - 0.15	0.30 - 0.60	0.025 max	0.025 max	0.50 max	1.90 - 2.60	0.87 - 1.13

Why Choose Us for Alloy Steel P22 Pipes?

Eckhardt Steel & Alloy supplies ASTM A335 P22 seamless pipes with full documentation and ready stock for both standard and urgent project requirements.

ASTM A335 P22 compliance confirmed on every order with full chemical and mechanical certification
Third-party inspection from SGS, Bureau Veritas, or TÜV available on request
Export worldwide with full shipping documents including mill test certificates, packing lists, and certificates of origin.
Ready stock of conventional OD & schedule combinations and rapid dispatch.
Non-standard wall thickness and length needs can be supplied in custom sizes.
Fast delivery. Average dispatch time (sizes in stock) 5–7 business days
Each shipment is issued a mill test certification. 3.1 EN 10204

Manufacturing Process of Alloy Steel P22 Pipes

Production starts with a billet, pierced and hot-rolled into a hollow shell, then sized to the required outer diameter and wall thickness. Seamless tubes follow this route, while welded pipes are formed from a plate fused along a longitudinal seam. The pipe is subjected to the heat treatment required by ASTM A335 for Grade P22, followed by dimensional and applicable non-destructive testing to relieve internal stress. Each length is then checked for dimensions, and non-destructive examination is carried out according to the applicable specification and purchase requirements before dispatch.

Industrial Applications of ASTM A335 Grade P22 Pipes

Plants running high-temperature, high-pressure processes specify this grade for boiler tubing, heat exchangers, and process lines. Common end-use sectors include:

- Power Generation Industry
- Petrochemical Industry
- Oil and Gas Industry
- Chemical Processing Industry
- Refining Industry
- Boiler and Heat Exchanger Manufacturing
- Pharmaceutical Industry
- Pulp and Paper Industry
- Food Processing Industry
- Aerospace and Defense Support Infrastructure

FAQs

What is the P22 pipe material specification?

ASTM A335 P22 covers seamless ferritic alloy steel pipe with 1.9–2.6% chromium and 0.87–1.13% molybdenum, minimum yield strength 205 MPa, for high-temperature service in power and process plant applications.

What is the P22 chemical composition?

Carbon 0.05–0.15%, Manganese 0.30–0.60%, Chromium 1.90–2.60%, Molybdenum 0.87–1.13%, Silicon 0.50% max, Sulphur 0.025% max, Phosphorus 0.025% max.

Is ASTM A335 P22 pipe suitable for high-temperature service?

Yes. P22 is the standard for superheaters, boiler headers and high pressure steam piping with mechanical strength and oxidation resistance for continuous service to 600 deg C.

What sizes are available in Alloy Steel P22 pipes?

OD ½ inch NB to 24 inch NB in Sch 40 to Sch 160. Other than typical, custom wall thicknesses and lengths are available.

Can Alloy Steel P22 pipes be supplied with test certificates?

Yes. Every cargo is delivered with mill test certificates, EN 10204 3.1, for chemical composition, mechanical properties and heat number traceability. Third party inspection results are available on request.

What is the difference between P22 and P11 pipes?

P22 is a 2.25% Cr and 1% Mo alloy compared to 1.25% Cr and 0.5% Mo in P11. This gives P22 enhanced creep strength and oxidation resistance at temperatures above 550°C. P11 can be used for moderately high-temperature service, while P22 is intended for more severe heat conditions.

Alloy Steel P22 Pipes