Pipe Knowledge

API 5CT is standard technical specifications for steel casing and tubing pipes used for oil wells in petroleum and natural gas industries. Besides casing and tubing, it also includes pup joints, coupling stock, coupling material, and accessory materials, and establishes requirements for three product specification levels (PSL-1, PSL-2, and PSL-3). The requirements for PSL-1 are […]

A steel pipe pile is a type of steel piling material that is commonly used to support and stabilize the foundation of a building. It is typically made of carbon steel and can be manufactured in seamless or welded forms, such as SSAW or LSAW. Therefore, a pipe pile serves as a structural construction material. […]

A concrete coated pipe, also known as a concrete weight coating pipe (CWC pipe), is a steel pipe that has been externally coated with concrete. The concrete coating consists of a mixture of cement, aggregates, reinforced steel mesh, and water. The purpose of this coating is to provide strong downward force protection or negative buoyancy […]

OCTG is the abbreviation of Oil Country Tubular Goods, it mainly refers to the piping products that are applied in oil and gas production (drilling activities). OCTG pipe is normally manufactured based on API or related standard specifications. It could also be taken as a collective name for Drill pipe, Steel Casing Pipe and Tubing […]

API Coupling refers to the steel couplings that used in connecting casing pipe and tubing. Also known by OCTG coupling, it is usually manufactured in seamless type, material grade same with the pipe body (API 5CT K55/J55, N80, L80, P110 etc), same PSL or providing higher grades than requested. Same heat treatment also applicable, except […]

Fire sprinkler pipe and related fittings are generally made of carbon steel or ductile iron material and used to carry water or other liquid to connect firefighting equipment. It is also called fire protection pipe and fittings. According to the corresponding rules and standards, the fire pipeline need to be red painted, (or with red […]

Thermal expansion pipe is also called seamless pipe or hot expanding seamless pipe. As it’s name, the pipe is made from hot expanding processes, mainly there are two types: 1. Original seamless steel pipe and 2. hot expanded seamless pipe (Based on original seamless pipe hot expanding). So when we say thermal expansion pipe usually […]

Large diameter steel pipe normally refers to the pipe diameter above 16 inch and up to 100 inch, it plays an important role in oil and gas transmissions. For long distance pipeline projects large diameter pipe could carry more liquid and with big flow rate. Especially for recent years, the use of large diameter steel […]

ASTM A335 pipe, also known as Chrome-Moly Alloy Pipe, is widely used in various industries for high temperature and high pressure services. It is available in different grades such as P5, P9, P11, P22, and P91. Market data shows that it is one of the most commonly used alloy pipes in industries such as boiler […]