Alloy Steel Pipe Manufacturer in India, ASTM A335 Alloy Steel Tube, Alloy Steel Boiler Tube, Alloy Steel High Pressure Pipe Exporter, ASTM A691 Alloy Steel Seamless Pipe Supplier in Europe.

Alloy Steel Boiler Tube Manufacturer, Alloy Steel Welded Tubes, Alloy Steel Chrome Moly Pipes, ASTM A213 Alloy Steel Seamless Tube, Alloy Steel EFW Pipes, Alloy Steel LSAW Tubes Suppliers in UK.

What is Alloy Steel Pipes & Tubes?

We offer a wide selection of ASTM 335 alloy steel pipes and tubes, celebrated for their superior quality and unmatched durability. Available in various sizes, grades, and specifications, our alloy pipes can be customized to meet the specific requirements of our clients. We manufacture seamless and welded alloy pipes according to ASME B16.11 standards and other international norms. These steel pipes and tubes are widely used in industries such as oil refineries, chemical plants, fertilizer plants, petrochemical plants, and sugar mills, all at competitive prices.

Ferritic alloy steel pipes are known for their high chromium content and low carbon percentage. These magnetic alloy steel boiler tubes boast key qualities such as high ductility, corrosion resistance, and resistance to stress-related corrosion cracking. Alloy steel is classified into high alloy steels and low alloy steels. Low alloy steel pipes have less than 5% alloying elements, while high alloy steel pipes contain between 5% and 50% alloying elements. An alloy steel seamless pipe can handle approximately 20% higher working pressure than a welded pipe, making it ideal for high-pressure applications.

Alloy steel seamless pipes and tubes are perfect for applications requiring moderate corrosion resistance, durability, and cost-effectiveness. The high-temperature alloy steel boiler pipe is often used in environments where temperatures reach up to 500°C. For example, alloy steel drill pipes on drilling rigs must withstand significant pressure differentials both inside and outside the pipe. These properties make IBR-certified alloy steel pipes a preferred choice in automotive, kitchenware, and industrial equipment applications.

Products made from alloy steel outperform those made from carbon steel. While alloy steel pipes are less expensive than stainless steel grades, they offer better corrosion resistance than carbon steel pipes, making them a more economical yet durable choice for various applications. As a trusted steel pipes supplier, we ensure our steel pipes and tubes meet the highest standards, providing excellent performance across different industries.

Alloy Steel Tube & Pipe Specifications

Specifications	ASTM A 335 ASME SA 335
Dimensions	ASTM, ASME and API
Size	1/8″NB TO 30″NB IN
Tubing Size	1 / 2” OD up to 5” OD, customs diameters also available
Outer Diameter	6-2500mm; WT:1-200mm
Schedule	SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Grade	STM A335 Gr. P5, P9, P11, P12, P21, P22 & P91, ASTM A213 – T5, T9, T11, T12, T22, T91, ASTM A691
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 Tube & Pipe Chemical Composition

Grade	UNS	C=	Mn	P=	S=	Si=	Cr	Mo
P1	K11522	0.10~ 0.20	0.30~ 0.80	0.025	0.025	0.10~ 0.50	-	0.44~ 0.65
P2	K11547	0.10~ 0.20	0.30~ 0.61	0.025	0.025	0.10~ 0.30	0.50~ 0.81	0.44~ 0.65
P5	K41545	0.15	0.30~ 0.60	0.025	0.025	0.50	4.00~ 6.00	0.44~ 0.65
P5b	K51545	0.15	0.30~ 0.60	0.025	0.025	1.00~ 2.00	4.00~ 6.00	0.44~ 0.65
P5c	K41245	0.12	0.30~ 0.60	0.025	0.025	0.50	4.00~ 6.00	0.44~ 0.65
P9	S50400	0.15	0.30~ 0.60	0.025	0.025	0.50~ 1.00	8.00~ 10.00	0.44~ 0.65
P11	K11597	0.05~ 0.15	0.30~ 0.61	0.025	0.025	0.50~ 1.00	1.00~ 1.50	0.44~ 0.65
P12	K11562	0.05~ 0.15	0.30~ 0.60	0.025	0.025	0.50	0.80~ 1.25	0.44~ 0.65
P15	K11578	0.05~ 0.15	0.30~ 0.60	0.025	0.025	1.15~ 1.65	-	0.44~ 0.65
P21	K31545	0.05~ 0.15	0.30~ 0.60	0.025	0.025	0.50	2.65~ 3.35	0.80~ 1.60
P22	K21590	0.05~ 0.15	0.30~ 0.60	0.025	0.025	0.50	1.90~ 2.60	0.87~ 1.13
P91	K91560	0.08~ 0.12	0.30~ 0.60	0.020	0.010	0.20~ 0.50	8.00~ 9.50	0.85~ 1.05
P92	K92460	0.07~ 0.13	0.30~ 0.60	0.020	0.010	0.50	8.50~ 9.50	0.30~ 0.60

Mechanical Properties Of Alloy Steel Tube & Pipe

Tensile Strength, MPa	Yield Strength, MPa	Elongation, %
415 min	205 min	30 min

Alloy Steel Outside Diameter & Tolerance of ASME SA335 Alloy Pipe

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 Custom Pipes Wall thickness

STM A450	Hot rolled	Outside Diameter, mm	Tolerance, %
		OD≤101.6, WT≤2.4	+40/-0
		OD≤101.6, 2.4＜WT≤3.8	+35/-0
		OD≤101.6, 3.8＜WT≤4.6	+33/-0
		OD≤101.6, WT>4.6	+28/-0
		OD>101.6, 2.4＜WT≤3.8	+35/-0
		OD>101.6, 3.8＜WT≤4.6	+33/-0
		OD>101.6, WT>4.6	+28/-0
	Cold Drawn	Outside Diameter, mm	Tolerance, %
		OD≤38.1	+20/-0
		OD>38.1	+22/-0
ASTM A530	NPS	Outside Diameter, inch	Tolerance, %
		1/8≤OD≤2-1/2	+20.0/-12.5
		3≤OD≤18, WT/OD≤5%	+22.5/-12.5
		3≤OD≤18, WT/OD>5%	+15.0/-12.5
		OD≥20, WT/OD≤5%	+22.5/-12.5
		OD≥20, WT/OD>5%	+15.0/-12.5

Alloy Steel Grade Pipes Heat Treatment

P5, P9, P11, and P22
Grade	Heat Treatment Type	Normalizing Temperature Range F [C]	Subcritical Annealing  or Tempering Temperature Range F  [C]
P5 (b,c)	Full or Isothermal Anneal
	Normalize and Temper	*****	1250 [675]
	Subcritical Anneal (P5c only)	*****	1325 – 1375 [715 – 745]
P9	Full or Isothermal Anneal
	Normalize and Temper	*****	1250 [675]
P11	Full or Isothermal Anneal
	Normalize and Temper	*****	1200 [650]
P22	Full or Isothermal Anneal
	Normalize and Temper	*****	1250 [675]
P91	Normalize and Temper	1900-1975 [1040 – 1080]	1350-1470 [730 – 800]
	Quench and Temper	1900-1975 [1040 – 1080]	1350-1470 [730 – 800]

Applications of Alloy Steel Seamless Tubes

Alloy steel seamless tubes are essential across various industries due to their strength, durability, and high-pressure resistance. Here are key industries where they are extensively used:

• Off-Shore Oil Drilling Companies: These tubes withstand extreme conditions and high pressure, ensuring safe oil extraction.
• Power Generation: Used in boilers and heat exchangers, they handle high temperatures and pressures efficiently.
• Petrochemicals: Ideal for processing and transporting petrochemicals due to their robustness and corrosion resistance.
• Gas Processing: These tubes manage high-pressure gas streams effectively in gas processing facilities.
• Specialty Chemicals: Their durability and chemical corrosion resistance are crucial in producing specialty chemicals.
• Pharmaceuticals: Used in drug manufacturing, they maintain high purity and resist contamination.
• Pharmaceutical Equipment: Ensure efficient operation of machinery under high pressure and temperature conditions.
• Chemical Equipment: Handle aggressive chemicals and high temperatures in chemical processing equipment.
• Sea Water Equipment: Resist corrosion from saltwater, suitable for desalination plants.
• Heat Exchangers: Excellent thermal conductivity and resistance to thermal stress make them ideal for heat exchangers.
• Condensers: Facilitate efficient heat transfer and resist thermal stress in various industrial processes.
• Pulp and Paper Industry: Strength and wear resistance are vital for processing and transporting pulp and chemicals.

These applications demonstrate the versatility and critical importance of alloy steel seamless tubes in multiple industries, ensuring reliable performance under extreme conditions.

Supply and Exporter of Alloy Steel Tube & Pipe in Countries like

Taiwan, Mexico, Iran, Namibia, Afghanistan, Netherlands, Nepal, Ireland, Libya, Morocco, Iran, Switzerland, Finland, Slovakia, Pakistan, Australia, Serbia, Angola, China, Philippines, Czech Republic, Belgium, Estonia, Costa Rica, Croatia, Sweden, Venezuela, Colombia, India, Belarus, Jordan, Azerbaijan, Mongolia, Vietnam, Ghana, Iraq, Algeria, Puerto Rico, New Zealand, Singapore, Indonesia, Ukraine, Israel, Mexico, Hong Kong, Bhutan, Germany, Brazil, Plan, Yemen, Malasiya, USA, Cambodia, Laos, Uganda, Tanzania, Sudan, Democratic Republic of Congo, zambia, Ethiopia, Brunei, Madagascar, Niger, Mali, Bangladesh, Bolivia, United States, Ecuador, Lebanon, Italy, South Korea, Denmark, Norway, Sri Lanka, Zimbabwe, Japan, Yemen, Oman, Portugal, Lithuania, Canada, Macau, Bahrain, Austria, Bulgaria, Spain, Kenya, United Kingdom, United Arab Emirates, Kazakhstan, Egypt, Saudi Arabia, Gambia, Argentina, Romania, Tibet, France, Chile, Gabon, South Africa, Trinidad & Tobago,Tunisia, Turkey, Nigeria, Peru, Russia, Chile, Nigeria, Hungary, Qatar, Greece, Malaysia, Kuwait, Poland, Thailand, Poland,Germany, Belgium, Italy, Turkey, Denmark and UK.

FAQs

What is alloy-steel pipe?

Alloy steel pipe is a type of steel pipe that contains additional alloying elements besides carbon, such as chromium, molybdenum, nickel, or vanadium.These alloying elements enhance the mechanical properties of the steel, such as strength, hardness, and corrosion resistance, making alloy steel pipes suitable for high-temperature and high-pressure applications in various industries.

What are alloy steel pipes?

Alloy steel pipes are steel pipes that contain additional alloying elements such as chromium, molybdenum, or nickel.These elements enhance the properties of the steel, making it suitable for high-temperature and high-pressure applications.

What is alloy steel used for?

Low alloy steels find applications in various industries due to their exceptional strength, machinability, cost-effectiveness, and availability. They are used in military vehicles, construction equipment, ships, pipelines, pressure vessels, oil drilling platforms, and structural components, among other applications.