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 […]

Steel pipe pile is a type of steel piling material. It is usually referred to the carbon steel pipe manufactured in seamless or welded (SSAW or LSAW), used for supporting and stabilizing the foundation of a building. So a pipe pile is a structural construction material. Pipe pile applications Steel pipe pile is a most […]

Concrete coated pipe also called concrete weight coating pipe (CWC pipe), is the steel pipe external with concrete weight coating (Mixed with cement, aggregates, reinforced steel mesh, and water), to provide strong downward force protection or a negative buoyancy for the pipelines. This pipe is commonly used in sub-sea (submarine) pipelines, with adding the proper […]

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 normally is manufactured based on API or related standard specifications. It also could 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 (with Grade P5, P9, P11, P22, P91 pipes) know as Chrome-Moly Alloy Pipe, has been widely used in different industries for high temperature, high pressure services. According to market data, it is one of the most consumption alloy pipes in boiler industry, heat exchanger, power station, high and super high pressure vessels. […]