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Schedule 40 Black Steel Pipe

The wall thickness series is represented by the pipe table number (Sch.) This is stipulated by the American National Standards Institute ANSIB36.10 (welded and seamless steel pipe) standard in1938.

The tube table number (Sch.) is the ratio of the design pressure to the allowable stress of thematerial at the design temperature multiplied by 1000 and rounded off. That is:
                                                 Sch .=P/[ó]t×1000 
Where P—design pressure, MPa; [ó]t—Allowable stress of material at design temperature, MPa.

The tube table numbers of seamless steel pipes and welded steel pipes can be determined by checking the data.The tube table numbers of seamless steel pipes and welded steel pipes can be determined by checking the data.

ANSI B36.10 and JIS standard pipe table number is Schl0, 20, 30, 40, 60, 80, 100, 120, 140, 160.

ANSI B36.19 stainless steel pipe table number is 5S, 10S, 40S, 80S.

Tube table number (Sch.) is not a wall thickness, but a wall thickness series. The actual wall thickness, the same pipe diameter, the thickness is different in different pipe table numbers.

Sch 40 black steel pipe is uncoated steel, also known as black steel. The dark color comes from the iron oxide formed on its surface during the manufacturing process.  When a steel pipe is forged, a black oxide scale is formed on its surface, giving it the smoothness seen on this type of pipe. The main purpose of sch 40 black steel pipes is to transport propane or natural gas to residential and commercial buildings. The pipeline has no seams, making it a better pipeline for carrying gas. Black steel pipes are also used for fire sprinkler systems.

 

Know more about this product price, catalogue, mill test certificate,  please inquiry to: sales@nan-steel.com

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