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Hot Rolled High Strength Alloy Steel Pipe ASTM A335 P12 Seamless Alloy Pipe OD 6

China Hot Rolled High Strength Alloy Steel Pipe ASTM A335 P12 Seamless Alloy Pipe OD 6

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Hot Rolled High Strength Alloy Steel Pipe ASTM A335 P12 Seamless Alloy Pipe OD 6

MOQ： 1 Ton
Price： US $986-1,599 / Ton
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Outer Diameter	6-1200mm
Wall Thickness	1-120mm
Length	6m,5.8m,11.8m,12m, or as required
Surface Treatment	black painted,PE coated,galvanized
Section Shape	Round
Tensile Strength	≥415-735MPa
Yield Strength	≥205-440MPa
Elongation	≥18-30%
Hardness	≤143-250HB
Carbon Content	0.05-0.20%
Manganese Content	0.30-0.61%
Chromium Content	0.50-9.50%
Molybdenum Content	0.44-1.50%
Silicon Content	0.10-2.00%
Heat Treatment	1200°F-1375°F

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Product Details
Company Details

Product Specification


Outer Diameter	6-1200mm	Wall Thickness	1-120mm
Length	6m,5.8m,11.8m,12m, or as required	Surface Treatment	black painted,PE coated,galvanized
Section Shape	Round	Tensile Strength	≥415-735MPa
Yield Strength	≥205-440MPa	Elongation	≥18-30%
Hardness	≤143-250HB	Carbon Content	0.05-0.20%
Manganese Content	0.30-0.61%	Chromium Content	0.50-9.50%
Molybdenum Content	0.44-1.50%	Silicon Content	0.10-2.00%
Heat Treatment	1200°F-1375°F
High Light	Hot Rolled Alloy Steel Pipe ，High Strength Seamless Alloy Pipe ，OD 6-630mm ASTM A335 P12 Pipe

Alloy Steel ASTM A335 P12 Pipe - Seamless Alloy Pipe Hot Rolled High Strength

High-performance seamless alloy steel pipes manufactured to ASTM A335 P12 standards, featuring hot-rolled construction for superior strength and durability in demanding industrial applications.

Product Specifications

General Specifications

Item	Cold Rolled / Cold Drawn alloy steel seamless pipe
Standard	JISG3467-88, JISG3458-88, GB3087, GB6479-2000, GB9948-2006, GB5310-95, GB9948-88, ASME SA210, ASME SA213, ASTM SA335, ASTMA335/A335m, ASTMA213/A213m, DIN 17175
Model No.	12Cr1MoV, P2(10CrMo910), T91, P91, P9, T9, Cr5Mo, 15CrMo, P11, P12, 13CrMo44, 25CrMo, 30CrMo, 40CrMo, 12CrMo, X12CrMo91, 12Cr2Mo
Surface	Black painted, PE coated, galvanized
Length	6m, 5.8m, 11.8m, 12m, or as required
Wall Thickness	1-120mm
Outer Diameter	6-1200mm

Trade Terms

Payment Terms	T/T, L/C, Western Union
Price Terms	FOB, CIF, CFR, Ex-work, CNF

Chemical Composition (%)

Grade	C	Mn	P≤	S≤	Si	Cr	Mo	V≥
T11	0.05-0.15	0.30-0.60	0.025	0.025	0.50-1.00	0.50-1.00	1.00-1.50
T12	0.05-0.15	0.30-0.61	0.025	0.025	≤0.50	0.80-1.25	0.44-0.65
T13	0.05-0.15	0.30-0.60	0.025	0.025	≤0.50	1.90-2.60	0.87-1.13
T2	0.10-0.20	0.30-0.61	0.025	0.025	0.10-0.30	0.50-0.81	0.44-0.65
T5	≤0.15	0.30-0.60	0.025	0.025	≤0.50	4.00-6.00	0.45-0.65
T5b	≤0.15	0.30-0.60	0.025	0.025	1.00-2.00	4.00-6.00	0.45-0.65
T5c	≤0.12	0.30-0.60	0.025	0.025	≤0.50	4.00-6.00	0.45-0.65
T9	≤0.15	0.30-0.60	0.025	0.025	0.25-1.00	8.00-10.00	0.9-1.0
T22	0.05-0.15	0.30-0.60	0.025	0.025	≤0.50	1.90-2.60	0.87-1.13
T91	0.08-0.12	0.30-0.60	0.020	0.010	≤0.50	8-9.50	0.85-1.05	0.18-0.25
T92	0.07-0.13	0.30-0.60	0.020	0.010	≤0.50	8-9.50	0.3-0.60	0.15-0.25
T21	0.05-0.15	0.30-0.60	0.025	0.025	≤0.50	2.65-3.35	0.80-1.06

Mechanical Properties

Standard	Steel Grade	Tensile (MPa)	Yield (MPa)	Elongate (%)	Hardness
20MnG	20MnG	≥415	≥240	≥22
25MnG	25MnG	≥485	≥275	≥20
15CrMoG	15CrMoG	440~640	≥235	≥21
12Cr2MoG	12Cr2MoG	450~600	≥280	≥20
12Cr1MoVG	12Cr1MoVG	470~640	≥255	≥21
12Cr2MoWVTiB	12Cr2MoWVTiB	540~735	≥345	≥18
10Cr9Mo1VNb	10Cr9Mo1VNb	≥585	≥415	≥20
ASME SA210	SA210A-1	≥415	≥255	≥30	≤143HB
ASME SA210	SA210C	≥485	≥275	≥30	≤179HB
ASME SA213	SA213 T11	≥415	≥205	≥30	≤163HB
ASME SA213	SA213 T12	≥415	≥220	≥30	≤163HB
ASME SA213	SA213 T22	≥415	≥205	≥30	≤163HB
ASME SA213	SA213 T23	≥510	≥400	≥20	≤220HB
ASME SA213	SA213 T91	≥585	≥415	≥20	≤250HB
ASME SA213	SA213 T92	≥620	≥440	≥20	≤250HB
DIN17175	ST45.8/	410~530	≥255	≥21	/
DIN17175	15Mo3	450~600	≥270	≥22
DIN17175	13CrMo44	440~590	≥290	≥22
DIN17175	10CrMo910	480~630	≥280	≥20

Heat Treatment Assurance

Our advanced 24-meter fully automated natural gas furnace ensures precise temperature control with real-time tolerance within 10ºC. For optimal performance, tempering temperature should exceed intended service temperature by at least 50°C. Grades P1, P2, and P12 may receive final heat treatment at 650°C to 705°C, while Grade P5c undergoes treatment between 715°C and 745°C.

Quality Assurance

Raw materials undergo spectrometer testing before storage
100% PMI testing of mother pipe to verify material composition
100% PMI testing of finished pipe to ensure correct grade specification

Permitted OD Tolerance

OD (mm)	Plus Tolerance (+)	Minus Tolerance (-)
10.29-48.3	0.4	0.4
48.3-114.3	0.79	0.79
114.3-219.1	1.59	0.79
219.1-323.9	2.38	0.79
>323.9	±1%	±1%

Applications

These high-pressure, low and medium pressure boiler steel pipes are specifically designed for critical components in large-scale power plants, including super-heaters, re-heaters, water walls, and economizers.

Product Gallery

Manufacturer Profile

Established in 1992, our company operates from a 100,000 square meter facility with 520 employees, including 15 engineers and 150 technical professionals. We produce over 20,000 tons of pipe fittings and 50,000 tons of pipe flux annually.

Certifications & Standards

ISO9001 Quality Management, ISO14001 Environmental Management, OHSA18001 Occupational Health & Safety, Pressure Pipe Special Equipment License, and multiple industry network certifications including China Power Network and China Petrochemical Materials Supply Network.

Production Capabilities

Equipped with 420 advanced machines including pushing machines, press machines, large heat treatment furnaces, and comprehensive testing instruments. We maintain over 20,000 tons of special steel pipes in inventory year-round.

Global Reach

Our products serve domestic markets and export to Southeast Asia, Central Asia, North Africa, and South America, supporting industries including petroleum, chemical, power generation, metallurgy, and shipbuilding.

Company Details

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Manufacturer,Distributor/Wholesaler,Exporter 
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Total Annual:

>1000000
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Employee Number:

>100 
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Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...

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JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
https://www.stainless-strips.com/

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