High-frequency resistance welded casing (ERW octg casing for short) has the advantages of high dimensional accuracy, good weld toughness, high extrusion resistance, and low cost compared with seamless casing.

The pressure bearing capacity of welded pipe refers to the maximum pressure that welded steel pipe can withstand under the action of internal or external pressure.

Black carbon steel pipe can be welded.

This article will introduce the cutting method of large diameter seamless steel pipe.

This article will introduce several common methods of connecting steel pipe piles.

This article will introduce these five conventional non-destructive testing methods for ERW pipe in detail.