We are trader and supplier of mild steel seamless tubes. Through our constant innovations, we bring forth quality seamless tubes, industrial steel tube, mild steel pipes, mild steel fitting etc. These seamless boiler tubes are offered at industry competitive rates and conform to strict quality parameters.we check the quality of seamless tube at our warehouse for its accuracy and sizes,mild steel seamless tubes comes in differs grade ,size.
"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/mm2) 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/mm2) 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
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 %, -0WT 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"
"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/mm2) 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/mm2) 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
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 %, -0WT 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"