Large-diameter steel pipe can be cut by mechanical sawing, oxy-fuel, plasma, laser, abrasive waterjet, or purpose-built pipe cutting and beveling equipment. No single method is best for every project. The correct choice depends on pipe material, outside diameter, wall thickness, coating, weld-seam position, required edge quality, production volume, and whether work is performed in a factory or in the field. This guide focuses on round steel pipe. Equipment capacity, cutting parameters, tolerances, and safety controls must be established from the…

Pipeline coating systems can help protect steel water pipelines in two different ways. External coatings limit contact between the steel and the surrounding soil or water, while internal linings separate the steel from the conveyed water. These functions should not be confused: an external coating protects the pipe structure, whereas an internal lining that contacts drinking water must also meet the applicable health and regulatory requirements. No coating makes a pipeline maintenance-free or guarantees a fixed service life. Performance depends…

Fusion-bonded epoxy (FBE) is a thermosetting powder coating used to protect steel pipe from corrosion. The powder is applied to a prepared and heated steel surface, where it melts, flows, and cures into a continuous coating. Reliable performance depends on the complete application process—not on powder selection alone. This guide explains the typical factory FBE pipe coating process, the controls buyers should review, and the information needed when requesting a quotation. Final requirements must always follow the applicable coating standard,…

The answer depends on the tube shape and on which radius is required. For a circular structural hollow section (CHS), the outside radius is one-half of the outside diameter. If wall thickness is known, the inside radius can also be calculated. For square and rectangular hollow sections, “radius” normally means the rounded corner radius, which should be taken from the applicable standard or the manufacturer’s section data rather than assumed from the overall width or height. Radius of a Circular…

Yes. Galvanized steel pipe can eventually rust, but its zinc coating normally delays corrosion of the underlying steel. The coating works as both a barrier and a sacrificial metal. Rust becomes more likely after the zinc is consumed, chemically attacked, or damaged deeply enough to expose steel beyond the protection available from adjacent zinc. How Galvanizing Protects Steel Pipe Barrier Protection A continuous zinc coating separates the steel from oxygen, moisture, and other corrosive agents. During hot-dip galvanizing, iron-zinc alloy…

ASTM A252 Grade 3 steel pipe piling has a specified minimum yield strength of 45,000 psi (310 MPa) and a minimum tensile strength of 66,000 psi (455 MPa). These are minimum material properties, not the allowable load or design capacity of an installed pile. Final pile capacity depends on section geometry, stability, connections, corrosion allowance, installation stresses, soil conditions, and the applicable structural and geotechnical design rules. ASTM A252 Grade 3 Mechanical Properties   Property Grade 3 requirement What it…

The primary distinction between a pipe pile and an H pile lies in their cross-sectional shapes and the methods they use to transfer load through the soil. A pipe pile is a circular steel section that is hollow and can either be open-ended or closed-ended, whereas an H pile is a solid steel section that is hot-rolled and H-shaped. Pipe piles provide options for varying diameter, wall thickness, and concrete fill, whereas H piles are typically effective for end-bearing applications and…

Polishing the galvanized steel pipe is a balancing act of esthetics and protection of the zinc covering. The method entails washing the surface using non-acidic detergents, using fine grit abrasives (400-600 grit) or soft nylon brushes to minimize damage to the galvanized layer, and using specific polishing chemicals developed for zinc surfaces. When properly implemented, these procedures help preserve the corrosion resistance of the pipe, and they provide a smooth, uniform finish for an industrial application where look and long life…

The construction and renewable energy industries today are facing growing demands for structural integrity and environmental responsibility. Structural steel tube products offer high-strength solutions at this critical juncture, helping to meet the carbon-reduction objectives that increasingly shape procurement decisions worldwide. Engineering businesses and fabricators are seeing ever more stringent sustainability reporting requirements, and the materials they choose now will define their competitive standing tomorrow. This guide considers how cold formed welded hollow sections, namely those manufactured to EN 10219, may contribute…

One of the most common corrosion prevention methods used in the pipeline and infrastructure business is steel pipe with Fusion Bonded Epoxy (FBE) coating. The coating is applied as a dry powder that is electrostatically sprayed onto a warmed steel surface, where it melts and cures to produce a thick, homogeneous protective layer. This technique imparts FBE coated steel pipe with high adhesion, good chemical resistance and long-term durability in harsh situations. The qualities of FBE coated steel pipe make it…

How well steel pipe will resist rust over time depends a lot on how thick the Fusion Bonded Epoxy (FBE) layer is. FBE coating pipe is used in many places where steel surfaces are exposed to water, dirt, chemicals, or marine conditions. These include underground and underwater pipelines, water utility systems, oil and gas transportation systems, and more. But there isn't just one type of FBE covering pipe that works for all projects. The thickness needed depends on the coating system, the…

ASTM A252 pipe piles are frequently employed as load bearing foundation elements of bridges, ports, buildings, retaining structures and other infrastructure projects. But picking the right pipe pile is more than just seeking the ASTM A252 certification — you also need to check the grade, measurements, manufacturing process, testing papers, corrosion protection, delivery length, and project-specific needs. Standard compliance is only the beginning, procurement is not simply about technical acceptability. What Are ASTM A252 Pipe Piles? ASTM A252 is the Standard…

ASTM A671 pipe can be used in parts of an LNG facility when the selected grade, class, impact requirements and design code support the actual minimum design metal temperature. It should not be promoted as automatically suitable for liquid LNG at about −162°C; primary cryogenic service requires a separate, project-specific material qualification. The Short Answer ASTM A671/A671M covers electric-fusion-welded steel pipe made with added filler metal from pressure-vessel-quality plate for high-pressure service at atmospheric and lower temperatures. This makes it…

Galvanizing is valuable where zinc can provide barrier and sacrificial protection, especially for exposed utility and building-service pipe. It is not a universal pipeline coating: buried transmission lines, aggressive liquids, high temperatures and some potable-water conditions usually require a different material or a purpose-designed coating system. How Galvanized Coating Protects Steel Hot-dip galvanizing forms zinc and zinc-iron alloy layers on steel. The coating acts as a barrier and also provides limited sacrificial protection at small damaged areas. Performance depends on…

Low-temperature pipe selection is governed by the minimum design metal temperature, pressure, fluid, wall thickness, welding route, and the applicable design code—not by a single material label. ASTM A333 and ASTM A671 are common starting points, but their scope and purchase requirements differ materially. What “Low-Temperature Service” Actually Means Steel can lose notch toughness as temperature falls, increasing the risk of brittle fracture. The relevant engineering value is therefore the minimum design metal temperature (MDMT), not simply the normal operating…