What Is API Seamless Casing?

Oil and casing play an important role in oil and natural gas exploration and production. API oil casing can be mainly divided into two types: seamless casing and ERW casing. Seamless casing and connections are considered the most commonly used oilfield casing today. Today, Union Steel Industry will mainly discuss seamless casing in this article.

Seamless casing refers to casing made of hot-rolled, cold-rolled, hot-drawn, and cold-drawn seamless steel pipes. Seamless oil well casing is available in sizes and wall thicknesses ranging from 1/8 inch to 26 inches outside diameter. It is particularly suitable for high-pressure operations including oil and gas exploration and drilling, hydrocarbon industries and refineries, and oil and gas transportation.

Seamless Casing Connection Type:

The connection types of oil well seamless casing joints can be defined as:

P–plain end

S–Short round thread

B–trapezoidal

L–Long round thread

Union Steel Industry Co., Ltd. is a seamless casing manufacturer in China. Years of experience have given us the expertise to manufacture a wide range of special purpose grades and pipes. Our highly skilled and experienced production team is able to meet any additional customer requirements and meet tight timelines for large project supply. If you are looking for API seamless sleeves, please contact: sales@union-steels.com