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Alloy Steel T91 Tubes

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Alloy Steel T91 Seamless Tubes

Alloy Steel T91 Seamless Tubes, ASTM A213 T91 Alloy Steel Seamless Tubes, UNS K90901 Seamless Tubes, AS Gr. T91 Seamless Sanitary Tubing Manufacturer & Supplier in India

Top Supplier & Exporter of Alloy Steel T91 High-Pressure Tube, Chrome Moly AS T91 Seamless Tubing, T91 Alloy Steel Heat Exchanger Tube, Alloy Steel Grade T91 Decorative Tube Dealer & Exporter

We at Aspirinox Alloys Inc. are leading suppliers of high-quality Alloy Steel T91 Seamless Tubes, widely used in various application industries such as gas, power, fertilizers , chemicals , as well as dairy, in different forms such as round, rectangular, hydraulic, etc ., with a plain, trod, or beveled end.


The T91 Alloy steel tubing supplied by us is accepted by clients in various industries like sugar, paper, textile, oil & gas, chemical and nuclear industries. The specification covers minimum and average wall seamless ferritic Alloy steel tube usually furnished with a 118-inch diameter up to 5 inches outside diameter.


Alloy steel, in addition to carbon also contains chemical elements that complement the steel with increased strength, chemical resistance and hardiness. Alloy steel T91 Welded Tube made by our highly skilled specialists, the raw material is certain to improve the product by means of toughness, increase its heat bearing capability.


T91 Alloy seamless round tubes are being found to be used, in low-pressure fluid services and others. This T91 Alloy Steel Tube product can be offered in seamless and cold drawn, bright, ERW, EFW, LSAW, SAW, forged form with rectangular, hex, hollow etc. Shapes depending on the clients requirement.


Our expertise lies in offering the product at its best, as per demands of the client, thus applying its usage for different industrial purposes. Call us now and acquire best in class product & service in the industry.

Alloy Steel T91 Tubes Dealer, ASME SA 213 Grade T91 AS Seamless Tubing, Alloy Steel T91 Hydraulic Tubes, AS Gr. T91 Rectangular Tubes Wholesalers & Stockists

Alloy Steel T91 Tubes Specifications

Specifications for Alloy Steel T91 Seamless Tubes. If any specification is not mentioned here, please use the contact button for quick quote.

Specifications ASTM A/ASME SA 213, A691
Dimensions ASTM, ASME and API
Size 1/2″ OD up to 5″ OD, customs diameter also available
Outer Diameter 6.2500mm; WT:1-200mm
Schedule SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type Seamless
Form Round Pipes, Custom Pipes, Square Pipes, Rectangular Pipe, “U” Shape, Hydraulic Pipes
Length Single Random, Double Random & Cut Length.
End Plain End, Beveled End, Treaded

Types of Alloy Steel T91 Tubes

  • Alloy Steel T91 Seamless Tube
  • T91 Alloy Steel Seamless Tube

  • UNS K90901 Seamless Tube
  • ASTM SA213 T91 Alloy Seamless Tube

Alloy Steel T91 Tubes Chemical Composition

Grade Alloy T91
C≤ 0.07-0.14
Mn 0.30-0.60
P 0.02
S 0.02
Si 0.20-0.50
Mo 0.85-1.05

Mechanical Properties of ASTM / ASME SA 213 Alloy Steel T91 Seamless Tubes

Grade Alloy T91
Tensile Strength, MPa 585 min
Yield Strength, MPa 415 min
Elongation % 20 min
Hardness, HB 250 max

Outside Diameter & Tolerance of Alloy Steel T91 Tubes

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

T91 Alloy Steel Seamless Tubes - Wall thickness & Tolerance

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

Alloy Steel T91 Tube Forms & Availability

  • Alloy Steel T91 Round Tube
  • T91 Alloy Steel Round Tube
  • UNS K90901 Seamless Round Tube
  • Alloy Steel UNS K90901 Round Tube
  • ASTM A213 T91 Alloy Steel Round Tubes
  • Alloy Steel T91 Rectangular Tube
  • T91 Alloy Steel Rectangular Tube
  • UNS K90901 Seamless Rectangular Tube

  • Alloy Steel UNS K90901 Rectangular Tube
  • ASTM A213 T91 Alloy Steel Rectangular Tubes
  • Alloy Steel T91 Custom Tube
  • T91 Alloy Steel Custom Tube
  • UNS K90901 Seamless Custom Tube
  • Alloy Steel UNS K90901 Custom Tube
  • ASTM A213 T91 Alloy Steel Custom Tubes

Alloy Steel T91 Tube Updated Price List

Contact us or click on the below button to request a latest Alloy Steel T91 Seamless Tubes price list. Aspirinox Alloys INC is dedicated to providing the world class Alloy Steel T91 Seamless Tubes that cater all your demands at very competitive rates.

ASTM / API / ASME Alloy Steel T91 Tubes Value Added Services

Material Testing:

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

Documentation & Packaging:

  • Commercial Invoice including HS Code
  • Packing List including Complete Details
  • Certificate of Origin legalized
  • Material Traceability Records
  • Quality Assurance Plan (QAP)
  • Heat Treatment Charts
  • Material Test Certificates (MTC)
  • Guarantee Letter
  • NABL approved Laboratory Test Reports

Exporting Alloy Steel T91 Tubes to Below Countries

Afghanistan, Albania, Andorra, Austria, Bahrain, Bangladesh, Bhutan, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Netherlands, Norway, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia, Singapore, South Korea, South Africa, Sri Lanka, Syria, Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen

Supplying Alloy Steel T91 Tubes to Following Domestic Cities

Mumbai, Delhi, Kolkata, Chennai, Bengaluru, Hyderabad, Ahmadabad, Pune, Surat, Jaipur, Kanpur, Lucknow, Nagpur, Ghaziabad, Indore, Coimbatore, Kochi, Patna, Kozhikode, Bhopal, Thrissur, Vadodara, Agra, Malappuram, Thiruvananthapuram, Kannur, Ludhiana, Nashik, Vijayawada, Madurai, Varanasi, Meerut, Faridabad, Rajkot, Jamshedpur, Srinagar, Jabalpur, Asansol, Vasai Virar City, Allahabad, Dhanbad, Aurangabad, Amritsar, Jodhpur, Ranchi, Raipur, Kollam, Gwalior, Durg-Bhilainagar, Chandigarh, Tiruchirappalli, Kota

Industries & Applications Where Our Alloy Steel T91 Tubes Are Used

Chemicals, Petrochemicals, Oil & Natural Gas Organization, Fats, Fertilizers, Sugar Mills & Distilleries, Cement Industries, Ship Builders, Paper Industries, Pumps, Automation, Paints, Steel Industries, etc.