Cracking pipes are long strips of steel with a hollow cross-section and seamless edges, representing an economical section steel.

Cracking Tube Standard and Brief Introduction:

Seamless Steel Tubes for Crude Oil Cracking (GB9948-2006, non-equivalent to ISO 9329/2:1997)

This standard applies to seamless steel tubes used for boilers, heat exchangers, and pressure pipelines in the petrochemical industry.

This standard seamless steel pipe is divided into two categories based on the manufacturing method, with categories and their designations:

Hot Rolled (Extruded, Expanded) Steel Pipe WH

Cold drawn steel pipe WC.

Steel pipe grade

10, 20, 15CrMo, 1Cr2Mo, 1Cr5Mo, etc.

Shipment Status

10, 20 <Finish hot rolled tube, tempering cold drawn tube>

15CrMo <hot-rolled tube final rolling + tempering, cold drawn tube normalizing + tempering>

1Cr2Mo <Hot rolled tube final rolling + tempering, cold drawn tube normalizing + tempering>

1Cr5Mo <Annealed>

Weight Calculation Formula: Carbon Steel Pipe: (Outer Diameter - Wall Thickness) x Wall Thickness x 0.02466 = KG/M

Alloy Tube: (OD-WT) X WT X 0.02486 = KG/M

Advantages

1. Circular components made from petrochemical cracking pipes enhance material efficiency, streamline manufacturing processes, and save on materials and processing time. Examples include roller bearing shells and jack sleeves, which are now commonly manufactured using steel pipes.

2. Cracking pipes are indispensable materials for various conventional weapons, including gun barrels and cannon tubes, all of which are manufactured using cracking pipes. Cracking pipes can be categorized into round pipes and non-standard pipes based on the shape of their cross-sectional area. Due to the larger area of cracking pipes under the same circumference, round pipes can transport more fluid.

Usage

Broadly used in the manufacture of structural components and mechanical parts, such as oil drill pipes, automotive drive shafts, bicycle frames, and steel scaffolding for construction projects.

Seamless steel tubes suitable for furnace tubes, heat exchanger tubes, and piping in oil refineries.