Seamless Boiler Pipes & Tubes
Technical Specifications
Chemical Composition & Mechanical Properties
| Specification | Type | Grade | Chemical Composition(%) | Mechanical Properties | Elongation (G,L. 50 mm WT 8 mm) e (min.) | Hydrostatic Test Pressure | Hardness(Max.) | |||||||||||||||||||
| Yield Strngth | Tensile Strength | |||||||||||||||||||||||||
| C | Mn | P | S | Si | Cr | Mo | Cu | Ni | V | Min. | Min. | Max. | ||||||||||||||
| Min | Max | Min | Max | Max | Max | Min | Max | Min | Max | Min | Max | Max | Max | Max | PSI | MPa | PSI | MPa | PSI | MPa | ||||||
| BS 3059 Part-I | E | 320 | - | 0.16 | 0.30 | 0.70 | 0.04 | 0.04 | - | 0.35 | - | - | - | - | - | - | - | 28,000 | 195 | 46,000 | 320 | 69,500 | 480 | 25 | P=20 S t/D S= Stress(in N/mm 2) 80% of SMYS | |
| S | 320 | - | 0.16 | 0.30 | 0.70 | 0.04 | 0.04 | 0.10 | 0.35 | - | - | - | - | - | - | - | 28,000 | 195 | 46,000 | 320 | 69,500 | 480 | 25 | |||
| BS 3059 Part-II | E & S | 243 | 0.12 | 0.2 | 0.4 | 0.8 | 0.035 | 0.035 | 0.1 | 0.35 | - | - | 0.25 | 0.35 | - | - | - | 40,000 | 275 | 69,500 | 480 | 91,000 | 630 | 22 | P=20 S t/D S= Stress(in N/mm 2) 80% of SMYS For C and Femitic Alloy Steel and 70% of SMYS for Austenistic Stainless Steel | |
| S | 622-490 | 0.08 | 0.15 | 0.4 | 0.7 | 0.03 | 0.03 | - | 0.5 | 2 | 2.5 | 0.9 | 1.2 | - | - | - | 40,000 | 275 | 71,000 | 490 | 93,000 | 640 | 20 | |||
| ASTM | S | A -1 | 0.27 | - | 0.93 | 0.035 | 0.035 | 0.10 | - | - | - | - | - | - | - | - | 37,000 | 255 | 60,000 | 415 | - | - | 30 | P=32000 t/D (inch-Pound Unit) P=220.6t/D (S.I. Unit) | 79 HRB or 143 BHN
89 HRB Or 179 BHN |
|
| A 210 | C | 0.35 | 0.29 | 1.06 | 0.035 | 0.035 | 0.10 | - | - | - | - | - | - | - | - | 40,000 | 275 | 70,000 | 485 | - | - | 30 | ||||
P - Hydrostatic Test Pressure(Bar) ; D Specified Ourside Diameter (mm) ; Specified Wall Thickness (mm)
A - Cross Sectional Area (inch /mm) ; U - Specified Tensile Strength (PSI /MPa)
E :ERW (Electrical Resistance Welded) : S - Seamless ; SMYS - Specified Mn. Yield Strength
A - Cross Sectional Area (inch /mm) ; U - Specified Tensile Strength (PSI /MPa)
E :ERW (Electrical Resistance Welded) : S - Seamless ; SMYS - Specified Mn. Yield Strength
Tolerance on Outside Diameter, Wall Thikness, Weight & Length of Pipe
| SPECIFICATION | TYPE | Outside Diameter | Wall Thikness | Weight | Length | ||||||||
| Normal | AVG(min.) | Minimum | Maximum | ||||||||||
| Pipe Body | Pipe Ends(Plain End) | ft. | mtr. | ft. | mtr. | ft. | mtr. | ft. | mtr. | ||||
| ASTM | S |
Hot Finished Seamless Tubes
4"(101.6mm & under) : +0.40mm,-0.80mm Above 4" to 71/2" including : +0.40 mm,-1.20mm (101.6 to 190.5 mm) Over7 1/2" to 9" : +0.40, -1.60 mm (190.50 to 228.60 mm) Welded And Cold Finished |
N.A. |
HFS Tubes
O.D. <=101.6mm & WT <2.4mm :+40%, -0 WT 2.4 to 3.80mm incl. : +35 %, -0 WT 3.80mm to 4.60mm incl. :+33%, -0 Wt > 4.60mm :+28%, -0 |
HFS :+16%,-0 | Exact Length Tolerance
H.F.S. Tubes : +5mm, -0 |
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| A-210 |
Seamless Tubes
<1"(25.4 mm) :± 0.10 mm 1"(25.4 mm) to 1-1/2" (38.1mm)incl. :±0.15 mm > 1-1/2"(38.1mm) to 2" (50.8mm)excl, : ±0.20 mm 2" (50.8mm) to 2-1/2"(63.5mm)excl, : ±0.25 mm 2-1/2"(63.5mm)to3"(76.2mm)excl, :±0.30 mm 3"(76.2mm)to4"(101.6mm)incl. :±0.38mm > 4 " (101.6mm) to7-1/2" (190.5mm)incl, :±0.38mm, -0.64mm > 7 1/2" (190.5mm) to9" (228.6mm)incl. :±0.38mm, -1.14mm |
N.A. |
Welded Tubes (For all Size) :+18%, -0
CFS TUBES :< 1.1/2"O.D. : +20%, -0 >1.1/2"OD : +22%, -0 |
Welded : +10%, -0
CFS TUBES : <1-1/2"O.D. : +12%, -0 >1-1/2" O.D, :+13%, -0 |
Welded & CFS Tubes
:
<2" (50.8mm)O.D : +3mm,-0 >2" (50.8mm)O.D :+5mm,-0 |
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| BS : 3059 pt-I | E,S | Welded : ±0.75% (±0.30 mm min)
HFS :±1% (±0.050 mm min) CFS : ±0.5% (±0.10 mm min) |
N.A. |
Welded : Upto 3.25mm Wt, ±10% Over 3.25mm WT, ±7.5%
HFS : ±12.5% CFS : ±7.5% |
N.A | Tolrence - Upto 6Mtr : +6 mm ,-0
Above 6mtr, 1.5mm will increase evrey 3 mtrs increase of length (12 mm max.) |
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| BS : 3059 pt-II | E,S | ± 0.75% ( ±0.30 mm min ) - Class2 | N.A. | ±10% (excluding weld area) Class-2 | N.A | ||||||||
