Introduction of seamless pipe

Seamless tubes are made from solid round steel “bills” that are heated and pushed and pulled over a die until the steel is formed into a hollow tube.Seamless tubes undergo various finishing operations such as straightening, inspection, hydrostatic testing and imaging. Seamless pipes are widely used in pressure piping, construction, petrochemical and oil refineries. Seamless pipe is available in the following specifications: ASTM A53, A106, A252, A333, A335, A501, A523, A589, API 5L and API 5CT. The most common seamless pipe is A106B.End finishes for seamless pipe include beveled or square-cut flat ends. Seamless carbon steel pipes are available in black, bare, galvanized or epoxy coated.

Steel pipes are typically supplied in lengths of 21 feet. It is also available in Single Random Lengths (SRLs) ranging from 17 feet to 24 feet. Double Random Length (DRL) refers to pipe that is at least 37 feet long to 44 feet long.

Seamless pipe weight calculation formula

The weight of seamless steel pipe per meter is W=0.02466*S(D-S).

Symbol meaning: D=outer diameter, S=wall thickness.

For example, for seamless steel pipes with an outer diameter of 60mm and a wall thickness of 4mm, find the weight per meter.

Solution: Weight per square meter=0.02466*4*(60-4)=5.52Kg.

The theoretical weight calculation formula of seamless steel pipe is W=0.0246615(D-S)*SW.