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ERW Boiler & Air Heater Tube
Technical Specifications
Chemical Composition & Mechanical Properties| Specification | Type | Grade | Chemical Composition% | Mechanical Properties | Remarks Impect /Hardness | ||||||||||||||||
| Yield Strength | Tensile Strength | % Elongation e | |||||||||||||||||||
| Min. | Max. | Min. | Max.. | ||||||||||||||||||
| C | Mn. | P | S | SI | |||||||||||||||||
| Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | PSI | MPa | PSI | MPa | PSI | MPa | PSI | MPa | ||||||
| IS: 2416 Pt-IV | ERW | 310 | 0.08 | 0.25 | 0.35 | 1.4 | 0.05 | 0.05 | 0.35 | – | 152 | – | – | – | 304 | – | 402 | (100-RM / 9.81) /C, C=2.20 , RM=Measured T.S | |||
| 360 | 0.08 | 0.25 | 0.35 | 1.4 | 0.05 | 0.05 | 0.35 | – | 177 | – | – | – | 353 | – | 451 | ||||||
| 440 | 0.08 | 0.25 | 0.35 | 1.4 | 0.05 | 0.05 | – | 0.35 | – | 201 | – | – | – | 402 | – | 500 | |||||
| IS :11714 Pt-III | ERW | – | 0.06 | 0.18 | 0.27 | 0.63 | 0.048 | 0.058 | – | – | – | – | – | – | – | – | – | – | – | 72 HRB(Max.) | |
| IS : 1914 Pt-IV | ERW | 320 | 0.08 | 0.25 | 0.35 | 1.4 | 0.05 | 0.05 | – | 0.35 | – | 176 | – | – | – | 320 | – | 480 | (100-RM / 9.81) /C, C=2.20 , RM=Measured T.S | – | |
| 360 | 0.08 | 0.25 | 0.35 | 1.4 | 0.05 | 0.05 | – | 0.35 | – | 198 | – | – | – | 360 | – | 500 | – | ||||
| 440 | 0.08 | 0.25 | 0.35 | 1.4 | 0.05 | 0.05 | – | 0.35 | – | 242 | – | – | – | 440 | – | 580 | – | ||||
| BS:3059 Pt-I | ERW | 320 | – | 0.16 | 0.30 | 0.70 | 0.040 | 0.040 | – | 0.35 | – | 195 | – | – | – | 320 | – | 480 | 25 | – | |
| BS:3059 Pt-II | ERW | 360 | – | 0.17 | 0.4 | 0.8 | 0.035 | 0.035 | 0.1 | 0.35 | – | 235 | – | – | – | 360 | – | 500 | 24 | – | |
| 440 | 0.12 | 0.18 | 0.9 | 1.2 | 0.035 | 0.035 | 0.1 | 0.35 | – | 245 | – | – | – | 480 | – | 580 | 21 | – | |||
| BS:6323 Pt-V | ERW | ERW-1 | – | 0.13 | – | 0.6 | 0.05 | 0.05 | – | – | – | 200 | – | – | – | 300 | – | – | D/a< 20 10 8 7 | D/a >20 20 15 12 | – |
| ERW-2 | – | 0.16 | – | 0.7 | 0.05 | 0.05 | – | – | – | 250 | – | – | – | 340 | – | – | – | ||||
| ERW-3 | – | 0.2 | – | 0.9 | 0.05 | 0.05 | – | 0.35 | – | 300 | – | – | – | 400 | – | – | – | ||||
| – | |||||||||||||||||||||
| ASTM- A-178 | ERW | A | 0.06 | 0.18 | 0.27 | 0.63 | 0.035 | 0.035 | – | – | 26,000 | 180 | – | – | 47,000 | 325 | – | – | 35 | – | |
| C | – | 0.35 | – | 0.8 | 0.035 | 0.035 | – | – | 37,000 | 255 | – | – | 60,000 | 415 | – | – | 30 | – | |||
| ASTM- A-214 | ERW | – | – | 0.18 | 0.27 | 0.63 | 0.035 | 0.035 | – | – | – | – | – | – | – | – | – | – | 72 HRB(Max.) | ||
| ASTM A333 & A334 | ERW | 1 | – | 0.30 | 0.40 | 1.06 | 0.025 | 0.025 | – | – | 30,000 | 205 | – | – | 55,000 | 380 | – | – | 35 | 18 J , 85 HRB (Max.) | |
| 6 | – | 0.30 | 0.29 | 1.06 | 0.025 | 0.025 | 0.10 | – | 35,000 | 240 | – | – | 60,000 | 415 | – | – | 30 | 18 J , 90 HRB (Max.) | |||
Tolerance on Outside Diameter/Dimensions/Wall Thickness, Weight & Length of Pipe
| Spec | Outside Dia. | Wall Thikness | Weight | Length | ||||||||
| Pipe Body | Pipe End | Nominal | Avg.(mm) | Minimum | Maximum | |||||||
| ft | mtr | ft | mtr | ft | mtr | ft | mtr | |||||
| IS : 1914 Pt-IV | +0,-1% | N.A. | +10%,-5% | N.A. | Tolrence – Upto 9mtr. +3, -0mm Above 9mtr. +6,-0mm | |||||||
| IS: 2416 Pt-IV | ±0.75%(±0.30 mm min.) | N.A. | +10%,-5% | N.A. | Tolrence – Upto 9mtr. +3, -0mm Above 9mtr. +6,-0mm | |||||||
| IS :11714 Pt-III | As per Table | N.A. | +18%,-0 | +10%,-0 | Tolerance – Below 50 mm OD +3.2,-0mm 50mm OD & Above +4.8, -0mm | |||||||
| BS:3059 Pt-I | ±0.75%(±0.30 mm min.) | N.A. | Upto3.25mm±10% Over 3.25mm ±7.5% | N.A. | Tolerance – Upto 6mtr. +6, -0 mm Above 6mtr 1.5mm will increase for every 3 mtr increase of length.(12mm max.) | |||||||
| BS:3059 Pt-II | ±0.75%(±0.30 mm min.) | N.A. | ±10%(excluding weld area) | N.A. | ||||||||
| BS:6323 Pt-V | As per Table | N.A. | Less Than 3mm +10% 3mm & Above +8% | N.A. | – | – | – | – | – | 3 | – | 12 |
| Tolerance – Upto 0.5 mtr.+2,-0mm 0.5 to 2mtr. +3,-0mm ; 2 to 5mtr, +5,-0mm; 5 to 7 mtr. +10, -0mm ; Above 7mtr.as agreed | ||||||||||||
| ASTM- A178 &A214 | ±0.15to ±0.38mm | N.A. | +18%,-0 | +10%,-0 | Tolerance- Under 50.8mm OD +3,-0mm 50.8 & above +5, -0mm | |||||||
| ASTM- A333 & A334 | ±0.15 to ±0.38mm | N.A. | +18%,-0 | +10%,-0 | 20 | 6 | – | – | 16 | 4.88 | 22 | 671 |
| 40 | 12 | 35 | 10.67 | 22 | 6.71 | – | – | |||||
Stainless Steel Sheets & Plates
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Boiler Steel Plates
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WELOK STEEL INDUSTRIES LLP’s Steels stocks a wide range of materials and grades. Below are a list of all standard sheets and plates materials and grades we stock