FAQ

Differences of ASTM A53 B and ASTM A106 B. ASTM A53 B covers ERW, Seamless and Galvanized steel pipe. A106 B covers only seamless steel pipe for high temperature service.

Heat treatment methods for carbon and alloy steel pipe includes normalizing, annealing, tempering, quenching. It will improve the material performances.

BS EN 10204:2004 is British Standard that related to different types of inspection documents for steel metal products. There are 4 types for EN 102024, 2.1, 2.2, 3.1 and 3.2, the later two types are the mostly used in steel pipe and plates products, so here we will mainly introduce the major differences between two […]

The differences between the seamless steel pipe and welded steel pipe, on performances, manufacturing processes, applications, sizes.

The differences between LSAW pipe and SSAW pipe. LSAW pipe welding in longitudinal, SSAW pipe welding in spiral, LSAW quality is better than SSAW.

API 5CT N80-1, N80Q differences for Casing pipe and Tubing on the impact strength, heat treatment and Non-Destructive test. N80Q is higher than N80-1.