ASTM A335 P5, P9, P11, P22, P91 Alloy Steel Seamless Pipe-Shandong Hongqixiang Metal Products Co., Ltd.

Product

Phone:

+8617862569838

ASTMA335P5,P9,P11,P22,P91AlloySteelSeamlessPipe

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Telephone:

Phone:

+8617862569838

Dimensional & Technical Parameters

Outer Diameter: 1/4 "-36" (21.3 mm-914mm)

Wall Thickness: SCH 20, 40, 80, 120, 160, XXS (custom available)

Length: Fixed (5.8/6/11.8/12m) or random length

Ends: Plain ends, beveled ends for welding

Surface Treatment: Black bare, oiled, varnish, or galvanized;3LPE;FBE

Heat Treatment:

P5, P9, P11, P22 - Fully annealed or isothermal annealed

P91 - Normalized + tempered

Grade	Typical Service Temp.	Main Applications
P5	Up to 600°C	Refinery heaters, cracking tubes, high-temp piping
P9	Up to 650°C	High-temp corrosive service, petrochemical
P11	Up to 550°C	Power plant steam lines, boiler headers
P22	Up to 575°C	Superheater tubes, main steam lines
P91	Up to 650°C	Ultra-supercritical power plants, high-efficiency boilers

Item	Specification
Standard	ASTM A335 / ASME SA335
Material Grade	P1, P5, P9, P11, P12, P22, P91, etc. (customizable according to requirements)
Outer Diameter (OD)	16mm - 1016mm (1/8 inch - 40 inches), customizable
Wall Thickness (WT)	2mm - 120mm, nominal wall and minimum wall available
Length	5.8m, 6m, 11.8m, 12m, or customized (fixed length, random length)
Chemical Composition (Typical, %)	P1: C 0.10-0.20, Si 0.10-0.50, Mn 0.30-0.80, P≤0.025, S≤0.025, Cr 0.44-0.65, Mo - P5: C≤0.15, Si≤0.50, Mn 0.30-0.60, P≤0.025, S≤0.025, Cr 4.00-6.00, Mo 0.45-0.65 P11: C 0.05-0.15, Si 0.50-1.00, Mn 0.30-0.60, P≤0.025, S≤0.025, Cr 1.00-1.50, Mo 0.45-0.65 P22: C 0.05-0.15, Si≤0.50, Mn 0.30-0.60, P≤0.025, S≤0.025, Cr 1.90-2.60, Mo 0.87-1.13 P91: C 0.08-0.12, Si 0.20-0.50, Mn 0.30-0.60, P≤0.020, S≤0.010, Cr 8.00-9.50, Mo 0.85-1.05, V 0.18-0.25
Mechanical Properties (Minimum)	Tensile Strength: 380-585 MPa (varies by grade) Yield Strength: 205-415 MPa (varies by grade) Elongation: ≥30% Hardness: ≤207 HB (after heat treatment)
Heat Treatment	P5/P9/P11/P22: Full/isothermal anneal, normalize and temper (tempering temp: 650-675℃) P91: Normalize (1040-1080℃) and temper (730-800℃), or quench and temper
Surface Treatment	Anti-rust oil coating, black paint, 3PE/epoxy powder coating, thermal zinc spraying
Application Temperature Range	P5: ≤ 450 ℃; P9: 450-500 ℃; P11: 450-550 ℃; P22: 500-600 ℃; P91: 550-650 ℃
Testing Standard	Hydrostatic test, ultrasonic test, eddy current test, tensile test, hardness test, impact test

Main Export Markets

We supply ASTM A335 P-series pipes to customers worldwide, with key markets including:

🌍Middle East - Saudi Arabia, UAE, Kuwait, Qatar (oil & gas, petrochemical)

🌏Asia Pacific - India, South Korea, Singapore, Indonesia, Vietnam (power plants, refineries)

🧭Europe - Germany, Italy, UK, Poland, Netherlands (energy infrastructure, chemical plants)

🌎North America - USA, Canada, Mexico (power generation, industrial piping)

🌍Africa - Nigeria, Algeria, Egypt, South Africa (oil & gas, mining, power)

🌎South America - Brazil, Chile, Argentina (refinery upgrades, thermal power)

Quality Assurance & Certifications

-100% ultrasonic, eddy current, or hydrostatic testing

-Mill test certificate (MTC) as per EN 10204 3.1 / 3.2

-Material traceability from ladle to final product

-Certified to ISO 9001:2015, PED 2014/68/EU, ASME, API

Technical Date

Chemical Composition (Typical, wt%)

Grade	C	Mn	P	S	Si	Cr	Mo	Others
P5	≤ 0.15	0.30-0.60	≤ 0.025	≤ 0.025	≤ 0.50	4.0-6.0	0.45-0.65	-
P9	≤ 0.15	0.30-0.60	≤ 0.025	≤ 0.025	0.25-1.00	8.0-10.0	0.90-1.10	-
P11	0.05-0.15	0.30-0.60	≤ 0.025	≤ 0.025	0.50-1.00	1.00-1.50	0.44-0.65	-
P22	0.05-0.15	0.30-0.60	≤ 0.025	≤ 0.025	≤ 0.50	1.90-2.60	0.87-1.13	-
P91	0.08-0.12	0.30-0.60	≤ 0.020	≤ 0.010	0.20-0.50	8.00-9.50	0.85-1.05	V 0.18-0.25, Nb 0.06-0.10, N 0.03-0.07

Mechanical Properties (Typical)

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
P5	≥ 415	≥ 205	≥ 30
P9	≥ 415	≥ 205	≥ 30
P11	≥ 415	≥ 205	≥ 30
P22	≥ 415	≥ 205	≥ 30
P91	≥ 585	≥ 415	≥ 20

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