China Carbon Steel Pipe Suppliers Carbon Steel Black Hot Rolled Seamless Pipe Round Steel Pipe As Per ASTM A106 Used For Petroleum Pipeline
Carbon steel pipe and Stainless steel pipe are the most common type of standard pipe used today. They are part of tubular goods, which are manufactured to different specifications and standards. Pipes are sold by "nominal pipe size" in sizes from 1/8" to 72". The two most common types of pipes are seamless pipe and welded pipe. Both are available in carbon steel and stainless steel. Welded pipe is also called ERW (Electric Resistance Welded) pipe. The most common specification for welded carbon steel pipe is A53. Seamless pipe is made by a process that requires no welding. The most common specification for seamless carbon steel pipes is A106B. Stainless Steel pipe is made to spec A312. Stainless steel pipe is also available in both seamless and welded configurations. The most common stainless material is 304 and 316.
Carbon steel pipes are made of steel ingots or solid tube billets through perforation to make capillaries, and then hot rolled, cold rolled or cold drew. Carbon steel pipe has an important position in the steel pipe industry.
General carbon steel pipe: It is made of 10, 20, 30, 35, 45, and other high-quality carbon steels such as 16Mn, 5MnV, and other low-alloy structural steels or 40Cr, 30CrMnSi, 45Mn2, 40MnB, and other alloy steels by hot rolling or cold rolling. Seamless pipes made of low carbon steel such as 10 and 20 are mainly used for fluid transportation pipelines. Seamless pipes made of medium carbon steel such as 45 and 40Cr are used to manufacture mechanical parts, such as stressed parts of automobiles and tractors. Carbon steel pipes are generally used to ensure strength and flattening tests. Hot-rolled steel pipes are delivered in the hot-rolled state or heat-treated state; cold-rolled steel pipes are delivered in a heat-treated state.
Seamless steel pipes are perforated from a whole round steel pipe without welds on the surface, which is called seamless steel pipe. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and top pipes. According to the cross-sectional shape, seamless steel pipes are divided into two types: round and special-shaped. Special-shaped pipes have square, elliptical, triangular, hexagonal, melon-shaped, star-shaped, and finned pipes. The maximum diameter is 900mm and the minimum diameter is 4mm. According to different uses, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes. Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for the petrochemical industry, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.
Black steel pipes are made of steel that has not been coated with a substrate such as zinc or paint. Since it has a dark color surface that is formed by iron oxide during the manufacturing process, it is called black steel pipes.
The black steel pipe is different from the galvanized pipe because it is uncoated. The dark color comes from the iron oxide formed on its surface during manufacturing. The primary purpose of black steel pipe is to carry natural gas into homes and businesses. The black seamless steel pipe is manufactured without a seam, making it a stronger and safer pipe to carry gas. The black steel pipe is also used for fire sprinkler systems because it is more fire-resistant than galvanized pipe.
