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Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil,Protective CoatingsSpecification sheet for straight welded pipe
Specification（mm）
OD(outer diameter)
wall thickness
weight
1/2 inch
21.25
2.75
1.26
3/4 inch
26.75
2.75
1.63
1 inch
33.3
3.25
2.42
11/4 inch
42.25
3.25
3.13
11/2 inch
48
3.5
3.84
2 inch
60
3.5
4.88
21/2 inch
75.5
3.75
6.64
3 inch
88.5
4.0
8.34
4 inch
114
4.0
10.85
5 inch
140
4.5
15.04
6 inch
165
4.5
17.81
8 inch
219
6
31.52
Butt-welded pipe is formed by feeding a hot steel plate through shapes that will roll it into a hollow circular shape. Forcibly squeezing the two ends of the plate together will produce a fused joint or seam. Figure 2.2 shows the steel plate as it begins the process of forming butt-welded pipeLeast common of the three methods is spiral-welded pipe. Spiral-welded pipe is formed by twisting strips of metal into a spiral shape, similar to a barber’s pole, then welding where the edges join one another to form a seam. This type of pipe is restricted to piping systems using low pressures due to its thin walls. Figure 2.3 shows spiral-welded pipe as it appears before welding.Each of the three methods for producing pipe has its advantages and disadvantages. Butt-welded pipe, for example, is formed from rolled plate that has a more uniform wall thickness and can be inspected for defects prior to forming and welding. This manufacturing method is particularly useful when thin walls and long lengths are needed. Because of the welded seam, however, there is always the possibility of defects that escape the numerous quality control checks performed during the manufacturing process.As a result, the American National Standards Institute (ANSI) developed strict guidelines for the manufacture of pipe. Pressure Piping Code B31 was written to govern the manufacture of pipe. In particular, code B31.1.0 assigns a strength factor of 85% for rolled pipe, 60% for spiral-welded pipe, and 100% efficiency for seamless pipe.Generally, wider wall thicknesses are produced by the seamless method. However, for the many low-pressure uses of pipe, the continuous welded method is the most economical. Seamless pipe is produced in single and double random lengths. Single random lengths vary from 16′-0″to 20′-0″. Pipes 2″and below are found in double random lengths measuring from 35′-0″to 40′-0″.Carbon steel welded& seamless pipe dimensions and weights
Carbon Pipe, Fittings and Flanges
Form
Welded (ERW) and Seamless
Application
Fluid, Structural
Size Range
DN15 – DN600
Grades
250, 350
Wall Thickness
Std Wt, XS
Fittings Type
Butt weld, Screwed & socket, Flanges, Black and Galvanised fittings to EN10241 (BS 1740)
Fittings Shape
Elbows, Tees, Reducers, Caps, Stub ends, Flanges (ANSI, Table E, D and H)
Specification sheet for straight welded pipe 
Butt-welded pipe is formed by feeding a hot steel plate through shapes that will roll it into a hollow circular shape. Forcibly squeezing the two ends of the plate together will produce a fused joint or seam. Figure 2.2 shows the steel plate as it begins the process of forming butt-welded pipe 
Least common of the three methods is spiral-welded pipe. Spiral-welded pipe is formed by twisting strips of metal into a spiral shape, similar to a barber’s pole, then welding where the edges join one another to form a seam. This type of pipe is restricted to piping systems using low pressures due to its thin walls. Figure 2.3 shows spiral-welded pipe as it appears before welding. 
Each of the three methods for producing pipe has its advantages and disadvantages. Butt-welded pipe, for example, is formed from rolled plate that has a more uniform wall thickness and can be inspected for defects prior to forming and welding. This manufacturing method is particularly useful when thin walls and long lengths are needed. Because of the welded seam, however, there is always the possibility of defects that escape the numerous quality control checks performed during the manufacturing process. As a result, the American National Standards Institute (ANSI) developed strict guidelines for the manufacture of pipe. Pressure Piping Code B31 was written to govern the manufacture of pipe. In particular, code B31.1.0 assigns a strength factor of 85% for rolled pipe, 60% for spiral-welded pipe, and 100% efficiency for seamless pipe. Generally, wider wall thicknesses are produced by the seamless method. However, for the many low-pressure uses of pipe, the continuous welded method is the most economical. Seamless pipe is produced in single and double random lengths. Single random lengths vary from 16′-0″to 20′-0″. Pipes 2″and below are found in double random lengths measuring from 35′-0″to 40′-0″.Carbon steel welded& seamless pipe dimensions and weights 
