High-Grade ISO 9001:2015 Certified Alloy Steel Pipes & Tubes – Available in Seamless, Welded, ERW, Boiler & EFW Forms with Custom Sizes, Thicknesses, and Multiple Grades – Fully Certified with NACE, IBR & Third-Party Inspection Reports.
We are a premier manufacturer and supplier of high-quality alloy steel pipes and tubes, serving critical industries such as oil and gas, power generation, petrochemical, and heavy engineering. Our dedication to quality and innovation ensures that our products meet stringent international standards. With advanced manufacturing processes and thorough quality inspections, we deliver durable and reliable alloy steel piping solutions for diverse industrial applications.
Our alloy steel product range includes seamless and welded pipes and tubes made from high-performance alloy steels enriched with elements like chromium, molybdenum, nickel, and vanadium. These additions improve strength, corrosion resistance, and high-temperature stability. We offer pipes and tubes in popular grades such as ASTM A335 (Grades P1, P5, P9, P11, P22, P91) for pipes and ASTM A213(Grade T1, T5, T9, T11, T22, T91) for seamless and welded alloy steel tubes. These standards ensure compliance with mechanical and chemical properties for pressure piping and heat exchanger applications.
Our alloy steel pipes and tubes come in a wide range of sizes — from small-diameter tubes used in instrumentation and heat exchangers to large-diameter pipes for industrial piping systems. Diameter options generally range from 1/2 inch to 48 inches, with wall thicknesses tailored to various schedules such as Schedule 40, 80, and beyond. Manufactured to meet international standards including ASTM, ASME, API, and DIN, our products offer precise dimensional accuracy, superior weldability, and excellent mechanical strength.
Alloy steel pipes and tubes are essential in high-pressure, high-temperature, and corrosive environments, making them ideal for power plants, petrochemical refineries, oil and gas pipelines, boilers, and heat exchangers. The robust chemical composition and stringent adherence to ASTM grades provide excellent resistance to oxidation, scaling, and thermal fatigue. This ensures longer service life, safety, and cost-efficiency, making alloy steel pipes and tubes a preferred choice for demanding industrial applications.
Extensive Range of Alloy Steel Pipes & Tubes – Manufactured to ASTM A335 (P1, P2, P5, P9, P11, P12, P22, P91) and ASTM A213 (T1, T2, T5, T9, T11, T12, T22, T91) Standards – OD Ranges 6 mm to 114 mm, Wall Thickness Up to 10 mm – Ideal for High-Pressure Boilers, Heat Exchangers, and Industrial Applications.
Alloy Steel Pipes & Tubes Specifications
| Specification | Details |
|---|---|
| Product Name | Alloy Steel Pipes & Tubes |
| Material Grades | ASTM A335 P1, P2, P5, P9, P11, P12, P22, P91, ASTM A213 T1, T2, T5, T9, T11, T12, T22, T91, A182 F5/F9/F11 etc. |
| Manufacturing Process | Seamless / ERW / Welded / Fabricated |
| Pipe Sizes | 1/2″ NB to 24″ NB (SCH 20, SCH 40, SCH 80, SCH 160, XXS) |
| Tube Sizes | 6.0 mm OD to 114.3 mm OD (Wall Thickness: 0.5 mm to 12 mm) |
| Surface Finish | Annealed, Pickled, Sand Blasted, Painted, Varnished |
| Standards | ASTM A335, ASTM A213, ASTM A199, ASTM A691, ASME SA335, SA213 |
| Length | Single Random, Double Random, or Cut Lengths |
| Form | Round, Hydraulic, Straight Length, “U” Bend, Fin Tubes |
| Ends | Plain End (PE), Beveled End (BE), Threaded End (TE) |
| Testing Reports | EN 10204/3.1, 3.2, IBR, NACE MR0175, ISO 17025, PMI Test, Hardness Test, Hydro Test, Radiography, Third-Party Inspection etc. |
Types of Alloy Steel Pipes & Tubes
Hot rolled and defect-free – Seamless Pipes & Tubes built for strength and longevity.
Strong, smooth, and reliable – Welded Pipes & Tubes for every industrial need.
Seamless look, welded strength — ERW Pipes & Tubes built to perform.
Tubing is the backbone of modern construction and manufacturing
Oval pipes offer a unique shape ideal for modern design and efficient flow systems.
Square and rectangular pipes are essential in construction, fabrication, and structural design.
Their versatility and durability make them a go-to choice for frames, supports, and structural components.
Their small diameter allows accurate flow regulation and heat exchange efficiency.
Equivalent of Alloy Steel Pipes
| ASTM Grade | UNS | DIN (Germany) | EN (Europe) | JIS (Japan) | BS (UK) |
|---|---|---|---|---|---|
| P1 / T1 | K11591 | 1.0460 | St35.8 | STPT 38 | 4301 |
| P2 / T2 | K11592 | 1.0460 | St35.8 | STPT 42 | 4302 |
| P5 / T5 | K11595 | 1.5415 | 15Mo3 | STPA 23 | 8600 |
| P9 / T9 | K11599 | 1.7380 | 13CrMo44 | STPA 25 | 8609 |
| P11 / T11 | K11597 | 1.7380 | 13CrMo44 | STPA 25 | 8611 |
| P12 / T12 | K91860 | 1.7335 | 12CrMo9-10 | STPA 26 | 8612 |
| P22 / T22 | K91560 | 1.7380 | 2.25Cr-1Mo | STPA 27 | 8622 |
| P91 / T91 | K91810 | 1.4903 | 9CrMoVNb | STPA 28 | 8591 |
Chemical Composition of Alloy Steel Tubing
| UNS equivalent | Grade | Mn | Cr | C≤ | S≤ | Mo | P≤ | Si≤ |
| K11522 | P1 / T1 | .30 to .80 | – | .10 to .20 | .025 | .44 to .65 | .025 | .10 to .50 |
| K11547 | P2 / T2 | .30 to .61 | .50 to .81 | .10 to .20 | .025 | .44 to .65 | .025 | .10 to .30 |
| K41545 | P5 / T5 | .30 to .60 | 4 to 6 | .15 | .025 | .44 to .65 | .025 | .5 |
| K51545 | P5b / T5b | .30 to .60 | 4 to 6 | .15 | .025 | .44 to .65 | .025 | 1 to 2 |
| K41245 | P5c / T5c | .30 to .60 | 4 to 6 | .12 | .025 | .44 to .65 | .025 | .5 |
| S50400 | P9 / T9 | .30 to .60 | 8 to 1 | .15 | .025 | .44 to .65 | .025 | .50 to 1 |
| K11597 | P11 / T11 | .30 to .61 | 1 to 1.50 | .05 to .15 | .025 | .44 to .65 | .025 | .50 to 1 |
| K11562 | P12 / T12 | .30 to .60 | .80 to 1.25 | .05 to .15 | .025 | .44 to .65 | .025 | .5 |
| K11578 | P15 / T15 | .30 to .60 | – | .05 to .15 | .025 | .44 to .65 | .025 | 1.15 to 1.65 |
| K31545 | P21 / T21 | .30 to .60 | 2.65 to 3.35 | .05 to .15 | .025 | .80 to 1.60 | .025 | .5 |
| K21590 | P22 / T22 | .30 to .60 | 1.90 to 2.60 | .05 to .15 | .025 | .87 to 1.13 | .025 | .5 |
| K91560 | P91 / T91 | .30 to .60 | 8 to 9.50 | .08 to .12 | .01 | .85 to 1.05 | .02 | .20 to .50 |
| K92460 | P92 / T92 | .30 to .60 | 8.50 to 9.50 | .07 to .13 | .01 | .30 to .60 | .02 | .5 |
Mechanical Properties of Low Alloy Steel Seamless Pipes
| A335 Low-Alloy Pipe | P1 / T1 | P2 / T2 | P5 / T5 | P9 / T9 | P11 / T11 | P12 / T12 | P22 / T22 | P91 / T91 |
|---|---|---|---|---|---|---|---|---|
| UNS Number | K11522 | K11547 | K41545 | S50400 | K11597 | K11562 | K21590 | K91560 |
| Tensile Strength ksi | 55 | 55 | 70 | 60 | 60 | 60 | 60 | 85 |
| Yield Strength ksi | 30 | 30 | 40 | 30 | 30 | 32 | 30 | 60 |
| Elongation % | 30 | 30 | 30 | 30 | 20 | 30 | 30 | 20 |
| Brinell | – | – | 207 max | – | – | 174 max | – | – |
| Rockwell | – | – | – | – | – | – | – | – |
Dimension Chart of Chromoly Pipes & Tubes
| NB | Size | OD | 40S | 5S | 10S | S10 | S20 | S40 | S60 | XS/80S | S80 | S100 | S120 | S140 | S160 | XXS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | ||
| 1/8 | 10.29 | 1.2 | 1.73 | 2.41 | ||||||||||||
| 1/4 | 13.72 | 1.7 | 2.24 | 3.02 | ||||||||||||
| 3/8 | 17.15 | 1.7 | 2.31 | 3.2 | ||||||||||||
| 15 | 1/2 | 21.34 | 2.8 | 1.7 | 2.1 | 2.77 | 3.73 | 3.73 | 4.78 | 7.47 | ||||||
| 20 | 3/4 | 26.67 | 2.9 | 1.7 | 2.1 | 2.87 | 3.91 | 3.91 | 5.56 | 7.82 | ||||||
| 25 | 1 | 33.4 | 3.4 | 1.7 | 2.8 | 3.38 | 4.55 | 4.55 | 6.35 | 9.09 | ||||||
| 32 | 1 1/4 | 42.16 | 3.6 | 1.7 | 2.8 | 3.56 | 4.85 | 4.85 | 6.35 | 9.7 | ||||||
| 40 | 1 1/2 | 48.26 | 3.7 | 1.7 | 2.8 | 3.68 | 5.08 | 5.08 | 7.14 | 10.2 | ||||||
| 50 | 2 | 60.33 | 3.9 | 1.7 | 2.8 | 3.91 | 5.54 | 5.54 | 9.74 | 11.1 | ||||||
| 65 | 2 1/2 | 73.03 | 5.2 | 2.1 | 3.1 | 5.16 | 7.01 | 7.01 | 9.53 | 14 | ||||||
| 80 | 3 | 88.9 | 5.5 | 2.1 | 3.1 | 5.49 | 7.62 | 7.62 | 11.1 | 15.2 | ||||||
| 90 | 3 1/2 | 101.6 | 5.7 | 2.1 | 3.1 | 5.74 | 8.08 | 8.08 | ||||||||
| 100 | 4 | 114.3 | 6 | 2.1 | 3.1 | 6.02 | 8.56 | 8.56 | 11.1 | 13.5 | 17.1 | |||||
| 125 | 5 | 141.3 | 6.6 | 2.8 | 3.4 | 6.55 | 9.53 | 9.53 | 12.7 | 15.9 | 19.1 | |||||
| 150 | 6 | 168.3 | 7.1 | 2.8 | 3.4 | 7.11 | 10.97 | 11 | 14.3 | 18.3 | 22 | |||||
| 200 | 8 | 219.1 | 8.2 | 2.8 | 3.8 | 6.4 | 8.18 | 10.3 | 12.7 | 12.7 | 15.1 | 19.3 | 20.6 | 23 | 22.2 | |
| 250 | 10 | 273.1 | 9.3 | 3.4 | 4.2 | 6.4 | 9.27 | 12.7 | 12.7 | 15.1 | 19.3 | 21.4 | 25.4 | 28.6 | 25.4 | |
| 300 | 12 | 323.9 | 9.5 | 4 | 4.6 | 6.4 | 10.3 | 14.3 | 12.7 | 17.5 | 21.4 | 25.4 | 28.6 | 33.3 | 25.4 | |
| 350 | 14 | 355.6 | 9.5 | 4 | 4.8 | 6.4 | 7.9 | 11.1 | 15.1 | 12.7 | 19.1 | 23.8 | 27.8 | 31.8 | 35.7 | |
| 400 | 16 | 406.4 | 9.5 | 4.2 | 4.8 | 6.4 | 7.9 | 12.7 | 16.7 | 12.7 | 21.4 | 26.2 | 31 | 36.5 | 40.5 | |
| 450 | 18 | 457.2 | 9.5 | 4.2 | 4.8 | 6.4 | 7.9 | 14.3 | 19.1 | 12.7 | 23.8 | 29.4 | 34.9 | 39.7 | 45.2 | |
| 500 | 20 | 508 | 9.5 | 4.8 | 5.5 | 6.4 | 9.5 | 15.1 | 20.6 | 12.7 | 26.2 | 32.5 | 38.1 | 44.5 | 50 | |
| 550 | 22 | 558.8 | 9.5 | 4.8 | 5.5 | 6.4 | 9.5 | 22.2 | 12.7 | 28.6 | 34.9 | 41.3 | 47.6 | 54 | ||
| 600 | 24 | 609.6 | 9.5 | 5.5 | 6.4 | 6.4 | 9.5 | 17.5 | 24.6 | 12.7 | 31 | 38.9 | 46 | 52.4 | 59.5 | |
| 650 | 26 | 660.4 | 9.5 | 7.9 | 13 | 12.7 | ||||||||||
| 700 | 28 | 711.2 | 9.5 | 7.9 | 13 | 12.7 | ||||||||||
| 750 | 30 | 762 | 9.5 | 6.4 | 7.9 | 7.9 | 13 | 12.7 | ||||||||
| 800 | 32 | 812.8 | 9.5 | 7.9 | 13 | 17.5 | 12.7 | |||||||||
| 850 | 34 | 863.6 | 9.5 | 7.9 | 13 | 17.5 | 12.7 | |||||||||
| 900 | 36 | 914.4 | 9.5 | 7.9 | 13 | 19.1 | 12.7 |
Low Alloy Steel Pipes & Tubes Weight Chart
| Size NPS | Pipe O.D. | Wall Thickness | Pipe I.D. | Weight per Foot | Standard to XXHY | Schedule Pipe # |
Section Modulus | Gallon Capacity Per Linear Foot |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 0.84 | 0.109 | 0.622 | 0.85 | STD | 40 | .0407 | .0158 |
| 0.147 | 0.546 | 1.09 | XHY | 80 | .0478 | .0122 | ||
| 0.188 | 0.464 | 1.31 | 160 | .0528 | .0088 | |||
| 0.294 | 0.252 | 1.72 | XXHY | .0577 | .0026 | |||
| 3/4 | 1.05 | 0.113 | 0.824 | 1.13 | STD | 40 | .0705 | .0277 |
| 0.154 | 0.742 | 1.48 | XHY | 80 | .0853 | .0225 | ||
| 0.219 | 0.612 | 1.95 | 160 | .1006 | .0153 | |||
| 0.308 | 0.434 | 2.44 | XXHY | .1103 | .0077 | |||
| 1 | 1.315 | 0.133 | 1.049 | 1.68 | STD | 40 | .1328 | .0449 |
| 0.179 | 0.957 | 2.17 | XHY | 80 | .1606 | .0374 | ||
| 0.250 | 0.815 | 2.85 | 160 | .1904 | .0271 | |||
| 0.358 | 0.599 | 3.66 | XXHY | .2136 | .0146 | |||
| 1 1/4 | 1.66 | 0.140 | 1.380 | 2.27 | STD | 40 | .2346 | .0777 |
| 0.191 | 1.278 | 3.00 | XHY | 80 | .2913 | .0666 | ||
| 0.250 | 1.160 | 3.77 | 160 | .3421 | .0549 | |||
| 0.382 | 0.896 | 5.22 | .4110 | .0328 | ||||
| 1 1/2 | 1.90 | 0.145 | 1.610 | 2.72 | STD | 40 | .3262 | .1058 |
| 0.200 | 1.500 | 3.63 | XHY | 80 | .4118 | .0918 | ||
| 0.281 | 1.338 | 4.86 | 160 | .5079 | .0730 | |||
| 0.400 | 1.100 | 6.41 | .5977 | .0494 | ||||
| 2 | 2.375 | 0.109 | 2.157 | 2.64 | 10 | .4205 | .1898 | |
| 0.154 | 2.067 | 3.66 | STD | 40 | .5606 | .1743 | ||
| 0.218 | 1.939 | 5.03 | XHY | 80 | .7309 | .1534 | ||
| 0.250 | 1.875 | 5.68 | .8045 | .1434 | ||||
| 0.281 | 1.813 | 6.29 | .8666 | .1344 | ||||
| 0.344 | 1.687 | 7.47 | 160 | .9806 | .1161 | |||
| 0.436 | 1.503 | 9.04 | XXHY | 1.1043 | .0922 | |||
| 2 1/2 | 2.875 | 0.120 | 2.635 | 3.53 | 10 | .6870 | .2833 | |
| 0.203 | 2.469 | 5.80 | STD. | 40 | 1.0640 | .2487 | ||
| 0.216 | 2.443 | 6.14 | 1.1169 | .2435 | ||||
| 0.250 | 2.375 | 7.02 | 1.2468 | .2301 | ||||
| 0.276 | 2.323 | 7.67 | XHY | 80 | 1.3386 | .2202 | ||
| 0.375 | 2.125 | 10.02 | 160 | 1.6371 | .1842 | |||
| 0.552 | 1.771 | 13.71 | XXXHY | 1.9971 | .1280 | |||
| 3 | 3.50 | 0.120 | 3.260 | 4.34 | 1.0411 | .4336 | ||
| 0.156 | 3.188 | 5.58 | 1.3122 | .4147 | ||||
| 0.172 | 3.156 | 6.12 | 1.4265 | .4064 | ||||
| 0.188 | 3.124 | 6.66 | 1.5342 | .3984 | ||||
| 0.216 | 3.068 | 7.58 | STD. | 40 | 1.7241 | .3840 | ||
| 0.250 | 3.000 | 8.69 | 1.9372 | .3672 | ||||
| 0.281 | 2.938 | 9.67 | 2.1207 | .3521 | ||||
| 0.300 | 2.900 | 10.26 | XHY | 80 | 2.2253 | .3431 | ||
| 0.438 | 2.624 | 14.34 | 160 | 2.8774 | .2811 | |||
| 0.600 | 2.300 | 18.6 | XXHY | 3.4243 | .2158 | |||
| 3 1/2 | 4.0 | 0.120 | 3.760 | 4.98 | 10 | 1.3776 | .5768 | |
| 0.226 | 3.548 | 9.12 | STD. | 140 | 2.3939 | .5136 | ||
| 0.250 | 3.500 | 10.02 | 2.6001 | .4998 | ||||
| 0.281 | 3.438 | 11.17 | 2.8562 | .4821 | ||||
| 0.318 | 3.364 | 12.52 | XHY | 80 | 3.1400 | .4617 | ||
| 0.636 | 2..728 | 22.87 | XXHY | 4.8795 | .3085 | |||
| 4 | 4.5 | 0.120 | 4.260 | 5.62 | 10 | 1.7612 | .7404 | |
| 0.156 | 4.188 | 7.24 | 2.2354 | .7156 | ||||
| 0.188 | 4.124 | 8.67 | 2.6296 | .6942 | ||||
| 0.203 | 4.094 | 9.32 | 2.8173 | .6838 | ||||
| 0.219 | 4.062 | 10.02 | 3.0184 | .6725 | ||||
| 0.237 | 4.026 | 10.80 | STD. | 40 | 3.2145 | .6613 | ||
| 0.250 | 4.000 | 11.36 | 3.3611 | .6528 | ||||
| 0.281 | 3.938 | 12.67 | 60 | 3.7021 | .6326 | |||
| 0.312 | 3.876 | 13.97 | 4.0273 | .6126 | ||||
| 0.337 | 3.826 | 15.00 | XHY | 80 | 4.2713 | .5972 | ||
| 0.438 | 3.624 | 19.02 | 120 | 5.1790 | .5361 | |||
| 0.531 | 3.438 | 22.53 | 160 | 5.8997 | .4822 | |||
| 0.674 | 3.152 | 27.57 | XXHY | 6.7927 | .4054 | |||
| 5 | 5.563 | 0.188 | 5.187 | 10.80 | 4.1161 | 1.0979 | ||
| 0.219 | 5.125 | 12.51 | 4.7279 | 1.0716 | ||||
| 0.258 | 5.047 | 14.63 | STD. | 40 | 5.4500 | 1.0391 | ||
| 0.281 | 5.001 | 15.87 | 5.8644 | 1.0204 | ||||
| 0.312 | 4.939 | 17.51 | 6.4074 | .99647 | ||||
| 0.344 | 4.875 | 19.19 | 6.9358 | .9696 | ||||
| 0.375 | 4.813 | 20.80 | XHY | 80 | 7.4300 | .9449 | ||
| 0.500 | 4.563 | 27.06 | 120 | 9.2534 | .8495 | |||
| 0.625 | 4.313 | 32.99 | 160 | 10.7976 | .7590 | |||
| 0.750 | 4.063 | 38.59 | XXHY | 12.0954 | .6734 | |||
| 6 | 6.625 | 0.109 | 6.407 | 7.59 | 5 | 3.5769 | 1.6748 | |
| 0.134 | 6.357 | 9.30 | 10 | 4.3475 | 1.6488 | |||
| 0.156 | 6.313 | 10.79 | 5.0107 | 1.6260 | ||||
| 0.188 | 6.249 | 12.94 | 5.9351 | 1.5937 | ||||
| 0.203 | 6.219 | 13.94 | 6.3804 | 1.5780 | ||||
| 0.219 | 6.187 | 15.00 | 6.8261 | 1.5620 | ||||
| 0.250 | 6.125 | 17.04 | 7.6905 | 1.5306 | ||||
| 0.280 | 6.065 | 18.99 | STD. | 40 | 8.4958 | 1.5008 | ||
| 0.312 | 6.001 | 21.06 | 9.3416 | 1.4688 | ||||
| 0.344 | 5.937 | 23.10 | 10.111 | 1.4391 | ||||
| 0.375 | 5.875 | 25.05 | 10.893 | 1.4082 | ||||
| 0.432 | 5.761 | 28.60 | XHY | 80 | 12.224 | 1.3541 | ||
| 0.500 | 5.625 | 32.74 | 13.711 | 1.2909 | ||||
| 0.562 | 5.501 | 36.43 | 120 | 14.9806 | 1.2346 | |||
| 0.625 | 5.375 | 40.09 | 16.1821 | 1.1787 | ||||
| 0.719 | 5.187 | 45.39 | 160 | 17.8243 | 1.0977 | |||
| 0.864 | 4.897 | 53.21 | XXHY | 20.025 | .9784 | |||
| 1.000 | 4.625 | 60.13 | 21.7719 | .8727 | ||||
| 1.125 | 4.375 | 66.14 | 23.1237 | .7809 |
Worldwide Supply of Alloy Steel Pipes & Tubes
Russia, Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, Turkey, United Arab Emirates (UAE), Yemen, United States of America (USA), Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom, Vatican City.
