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Technical Specifications

Chemical Composition & Mechanical Properties Specification Type Grade Chemical Composition(%)

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

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
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
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.)
BS : 3059 pt-II E,S ± 0.75% ( ±0.30 mm min ) - Class2 N.A. ±10% (excluding weld area) Class-2 N.A