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Specification of Carbon Steel Pipe Fittings
Specification ASME SA312 / ASTM A312
Finish Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
Origin European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material)
Test
  • Hardness Test
  • Flattening Test
  • Pitting Resistance Test
  • Chemical Analysis – Spectro Analysis
  • Micro and MacroTest
  • Flaring Test
  • Intergranular Corrosion (IGC) Test
  • Mechanical Testing Such as Tensile of Area
  • Positive Material Identification – PMI Testing
Marking All Stainless Steel Seamless Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
Thickness exact 0.25, 0.28, 0.32, 0.37, 0.41, 0.51, 0.61, 0.71, 0.91, 1.11, 1.15, 1.41 mm
size 5.0 mm – 1219.2 mm
Outside Diameter 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Thickness Range 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Type Seamless / ERW / Welded / Fabricated / CDW
Form Round Pipes, Square Pipes, Rectangular Pipe
Length Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded
End Protection Plastic Caps
Surface Finish: 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
Delivery Condition Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Inspection, Test Reports Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
Material Test Certificates (MTC) Material Test Certificates (MTC) as per EN 10204/ 3.1B and EN 10204 3.2
Seamless Pipe size 5.0 mm – 1219.2 mm
Schedule SCH5, SCH10, SCH40, STD, SCH80, SCH160
Pipe End Plain End, Beveled End, Treaded.
Size 4 to 219mm W. T.: 0.5 to 20mm

Dimension of Carbon Steel A234 Pipe Fittings
Nominal
Pipe
Size 		Outside
Diameter 		90° Elbows 45° Elbows 180° Returns
(inches)
Long Radius
Short Radius
Long Radius
Long Radius
(mm)
(inches)
Center to Face
(inches)
Center to Face
(inches)
Center to Face
(inches)
Radius
(inches)
Center to Center
(inches)
Back to face
(inches)
1/2
21.3
0.840
1 1/2
–
5/8
2
1 7/8
3/4
26.7
1.050
1 1/8
–
7/16
2 1/4
1 11/16
1
33.4
1.315
1 1/2
1
7/8
3
2 3/16
1 1/4
42.2
1.660
1 7/8
1 1/4
1
3 3/4
2 3/4
1 1/2
48.3
1.900
2 1/4
1 1/2
1 1/8
3
4 1/2
3 1/4
2
60.3
2.375
3
2
1 3/8
4
6
4 3/16
2 1/2
73.0
2.875
3 3/4
2 1/2
1 3/4
5
7 1/2
5 3/16
3
88.9
3.500
4 1/2
3
2
6
9
6 1/4
3 1/2
101.6
4.000
5 1/4
3 1/2
2 1/4
7
10 1/2
7 1/4
4
114.3
4.500
6
4
2 1/2
8
12
8 1/4
5
141.3
5.563
7 1/2
5
3 1/8
10
15
10 5/16
6
168.3
6.625
9
6
3 3/4
12
18
12 5/16
8
219.1
8.625
12
8
5
12
24
16 5/16
10
273.1
10.750
15
10
6 1/4
15
30
20 3/8
12
323.9
12.750
18
12
7 1/2
18
36
24 3/8

Chemical Composition of Carbon Steel WPB Fittings
Grade C Mn P S Si Cr Mo Ni Cu V Nb
WPB 0.3 0.29-1.06 0.05 0.058 0.1min 0.4 0.15 0.4 0.4 0.08 0.02

Mechanical Properties of A234 WPB Weld Fittings
Item Tensile Strength (KSI) Yield Strength (KSI)
WPB 60 35