Common Steel Pipe Specification Table
Common Pipe Specification Table Nominal Diameter (DN) Outer Diameter of Steel Pipe Seamless Steel Pipe Wall Thickness (mm) Series A Series B 10 Φ17.2 mm Φ14 mm 15 Φ21.3 mm Φ18 mm 20 Φ26.9 mm Φ25 mm 25 Φ33.7 mm Φ32 mm 32 Φ42.4 mm Φ38 mm 40 Φ48.3 mm Φ45 mm 50 Φ60.3 mm Φ57 mm 65 Φ76.1 mm [...]
Steel Pipe Cross-Sectional Properties
Steel Pipe Cross-Sectional Properties Type/Model Outer Diameter Wall Thickness Cross-Sectional Area Weight Weight I W r mm mm mm cm^2 kg/m m^2/m cm^4 cm^3 cm 30x2 30 2 1.759 1.381 0.094 1.730 1.15 0.99 30x2.5 30 2.5 2.160 1.695 0.094 2.060 1.37 0.98 34x2 34 2 2.011 1.578 0.107 2.580 1.52 1.13 34x2.5 34 2.5 2.474 1.942 0.107 3.090 1.82 [...]
Common Steel Pipe Specifications Table
Common Steel Pipe Specifications Table Pipe diameters should be measured in millimeters (mm), and the expression of pipe diameters should conform to the following regulations: Water and Gas Transmission Steel Pipes (galvanized or non-galvanized), Cast Iron Pipes, etc.: The pipe diameter should be indicated by the nominal diameter DN. Seamless Steel Pipes, Welded Steel Pipes (straight seam or spiral seam), Copper [...]
Steel Pipe Welding Techniques for Connecting Steel Pipes and Flanges
**Steel Pipe Welding Techniques for Connecting Steel Pipes and Flanges** ### (1) Steel Pipe Butt Welding and Splicing 1. **Steel Pipe Butt Welds** - **Between any two adjacent nodes, there must not be two splicing points in the steel pipe butt welds, and the minimum length of the connecting pipe should be greater than 800 mm.** 2. **Welder Qualification** [...]
Seamless Steel Pipe Production Process
### Seamless Steel Pipe Production Process The general production process of seamless steel pipes can be categorized into **cold drawing** and **hot rolling**. The production process of cold-rolled seamless steel pipes is generally more complex than that of hot-rolled pipes. The pipe billet first undergoes three-roll continuous rolling. After extrusion, a sizing test is performed. If there are no surface [...]
Differences Between Hot-Rolled and Cold-Rolled Seamless Steel Pipes
### Differences Between Hot-Rolled and Cold-Rolled Seamless Steel Pipes 1. **Manufacturing Process**: - **Hot-rolled seamless steel pipes** are made by heating a round billet, piercing it, and then rolling it using a three-roll skew rolling process, continuous rolling, or extrusion. After rolling, the pipe goes through sizing, cooling, straightening, hydrostatic testing (or inspection), marking, and then storage. - **Cold-rolled seamless [...]