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ASTM A213 Grade T91 Alloy Steel Seamless Tubes

ASTM A213 Grade T91 Alloy Steel Seamless Tubes, ASTM A213 T91 Seamless Tubing Manufacturer & Exporter


Citizen Metals is one of the renowned manufacturer, exporter, stockist, stock holder and supplier of a qualitative range of Alloy Steel ASTM A213 T91 Seamless Tubes that are being designed as per the national and international standard quality of raw materials. Hardness testing of Alloy Steel T91 Seamless Tubes shall be carried out at mid-thickness level of the product. Also the tension test, flattening test, hardness test, and flaring test of these ASTM A213 T91 Seamless Tubes shall be carried out to each tube. They are at length used in diverse application industries such as in Oil & Gas, Fertilizers, Heat-Exchangers, Power, Paper & Pulp, Chemicals, pharmaceuticals, Dairy, Water Treatment, and so on.

ASTM A213 Gr. T91 Seamless Tubes, ASTM A213 Steel Tubes, ASTM A213 T91 Steel Tubing Suppliers In India.

ASTM A213 Gr T91 Alloy Steel Tubes

ASTM A213 Gr T91 Alloy Steel Tubes

ASTM A213 Gr T91 Alloy Steel Seamless Tubes

ASTM A213 Gr T91 Alloy Steel Seamless Tubes

ASTM A213 T91 Alloy Steel Tubing

ASTM A213 T91 Alloy Steel Tubing

ASTM A213 T91 Steel Tubes

ASTM A213 T91 Steel Tubes

Meanwhile, to meet the quality conscious requirements for our highly esteemed clients, we provide these ASTM A213 T91 Alloy Steel Seamless Tubes in different sizes, grades and thickness as per customized requirements given by our customers.

ASTM A213 Grade T91 Alloy Steel Seamless Tubes Specification :

Dimensions : ASTM, ASME and API

Size Range : 1/2” OD up to 5” OD, customs diameters also available

Equivalent Standards : EN 10216-2, ASTM A335, GOST 550-75

Thickness : SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules, upto 12mm thk

Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS, UPTO 4" WALL THICK

Material : T91, K90901

Outer Dimensions : 6-2500mm; WT:1-200mm

Type : Seamless

Form : Round, Square, Rectangular, Hydraulic Etc.

Length : Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths

Tubing End : Plain End, Beveled End, Treaded

ASTM A / ASME SA 213 Standard Specification

Grade UNS # Heater Tubes
T91 K90901 A213 / SA213

Chemical Composition

Grade C Si Mn Cr Mo S P Ni V Al
T91 0.07 - 0.14 0.20 - 0.50 0.30 - 0.60 8.0 - 9.5 0.85 - 1.05 0.02 0.02 0.40 0.18 - 0.25 0.015

Mechanical Properties

Grade Tensile Strength (Mpa), Min. Yield Strength (Mpa), Min. Elongation, % Hardness, HB
T91 585 min 415 min 20 min 250 max


Outside Diameter OD Tolerance WT Tolerance Ovality Tolerance Cut Length Tolerance
OD≤ 12, 7 mm ± 0, 13 mm ± 15 % + 3, 18 mm, – 0 mm
12, 7 mm < OD ≤ 38, 1 mm ± 0, 13 mm ± 10 % max, 1, 65 mm + 3, 18 mm, – 0 mm
38, 1 mm < OD ≤ 88, 9 mm ± 0, 25 mm ± 10 % max, 2, 41 mm + 4, 76 mm, – 0 mm

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