Knowledge

When sourcing ERW round welded steel tubes, many buyers confuse EN 10219 ERW round pipe with API 5L or ASTM A53 ERW pipe. All three are high-frequency

API 5L specification covers line pipe for the conveyance of natural gas, oil, water and other fluids. For ERW (Electric Resistance Welded) pipe, chemi

Selecting the proper steel grade (Gr.B, X42, X46, X52 and higher grades) is not only about matching tensile and yield strength; it also ties closely t

Hot-dipped galvanized pipes come with reliable anti-corrosion zinc coating. However, poor storage practices may lead to white rust, black discoloratio

Steel pipe is attacked from two sides at once. Outside, soil moisture, groundwater, seawater and damp air go after the wall. Inside, oxygen-rich water

Most buyers of large diameter welded pipe look at three numbers: outside diameter, wall thickness and steel grade. Fewer ask what happened to the pipe

The main differences between Hydrostatic Test and NDT (Non-Destructive Tests) are outlined in detail below. These two inspection techniques serve comp

ASTM A53 and API 5L are two widely referenced standards for ERW welded steel pipe, and many overseas buyers mix them up. Even though both can cover lo

Selecting the correct steel pipe directly impacts project safety, budget and service life. ERW, LSAW, SSAW and seamless pipe are four mainstream types

Square and rectangular steel tube is the backbone of solar mounting systems, greenhouse frames, workshops, guardrails and equipment bases. Most of the