What are the common lengths of spiral welded steel pipes?

Release date:

2021-02-20

Author:

Source:

Category:

Steel Pipe Knowledge

Spiral steel pipes typically come in a standard length of 12 meters. In most applications, the quantity of spiral steel pipe is calculated based on this 12-meter length. Pipe specifications are indicated by the nominal diameter in millimeters; note that the nominal diameter may differ from the actual dimension. According to standards, there are two types of wall thickness: standard‑wall and thickened‑wall pipes.

　　 Spiral steel pipe Typically, there is a standard length: the common length of spiral welded steel pipe is 12 meters. In most applications, the quantity of spiral pipe required is calculated based on this 12-meter length. The specifications of spiral welded steel pipe are indicated by the nominal diameter in millimeters; note that the nominal diameter differs from the actual diameter. According to standards, there are two types of wall thickness: standard‑wall and thickened‑wall pipes.

　　What are the lengths available for spiral steel pipes? Of course, in addition to 12-meter-long spiral steel pipes, there are also 6-meter, 9-meter, and 14-meter options; these typically require advance ordering.

　　Spiral steel pipes undergo thermal insulation treatment, with polyurethane‑insulated spiral pipes being the primary method. Prior to insulation, the steel pipes are subjected to preliminary treatments such as rust removal, after which they are encased in a polyethylene outer jacket whose thickness is customized according to customer requirements. Foam is then injected between the pipe body and the polyethylene jacket, with the foam thickness likewise tailored to meet specific client specifications.

　　Spiral steel pipes can be installed either above ground or underground. Mechanical properties—toughness: Toughness refers to a metal’s ability to resist fracture under impact (dynamic loading). Toughness encompasses impact toughness and the impact absorption energy index. Impact toughness: Impact toughness is a mechanical property that measures a metal’s resistance to impact under dynamic loading conditions.

　　Typically, the standard specifies a single‑impact energy value (αKU or αKV). This is determined using standardized specimens of specified dimensions and geometry, tested on a pendulum‑type impact testing machine. The impact‑absorbing energy is quantified as the ratio of the work expended to fracture (AKU or AKV) to the cross‑sectional area at the fracture surface (F).

How is hot-rolled spiral steel pipe inspected before leaving the factory?

How are high-quality spiral tubes manufactured?

More News

■

What are the product categories offered by spiral pipe manufacturers?

—

2023-05-11