In the field of oil and gas systems, seamless steel pipes play an important role. As a high-precision, high-strength steel pipe, it can withstand various harsh environments such as high pressure, high temperature, corrosion, etc., so it is widely used in transportation pipelines and pressure vessels in new energy fields such as oil and natural gas.
1. Characteristics
Seamless steel pipes used in the oil and gas field have the following characteristics:
1. High precision: The seamless steel pipe has a uniform wall and high precision, which can ensure the smoothness and sealing of the pipe.
2. High strength: Since seamless steel pipes have no welds, they have higher strength and toughness and can withstand harsh environments such as high pressure and high temperature.
3. Corrosion resistance: The acid and alkali components in oil and natural gas will cause corrosion to steel pipes, but the base material used in seamless steel pipes is higher, so it has better corrosion resistance and can ensure the smooth operation of the pipeline.
4. Long life: Due to the strict manufacturing process of seamless steel pipes, their service life can be guaranteed to last for decades, thereby reducing the frequency of replacement and corresponding costs.
2. Manufacturing process
The manufacturing process of seamless steel pipes for the oil and gas field mainly includes the following steps:
1. Smelting: Add molten iron into the furnace for smelting to remove impurities and gases to ensure the purity of the steel pipe.
2. Continuous casting: The molten iron is poured into the continuous casting machine to solidify to form a steel billet.
3. Rolling: The steel billet is subjected to multiple rolling processes to deform it and form the required tubular structure.
4. Perforation: The rolled steel pipe is perforated through a perforation machine to form the wall of the seamless steel pipe.
5. Heat treatment: Heat treatment is performed on the perforated seamless steel pipe to eliminate internal stress and improve its mechanical properties.
6. Finishing: Surface finishing and dimensional processing of heat-treated seamless steel pipes to meet customer needs.
7. Inspection: Strict inspection is carried out on finished seamless steel pipes, including dimensional accuracy, wall thickness uniformity, internal and external surface quality, etc., to ensure product quality.
In short, seamless steel pipes used in the oil and gas field, as a high-precision, high-strength steel pipe material, play an important role in transmission pipelines and pressure vessels in the energy field.
Our company's main products for the petroleum industry are:

API 5L pipeline steel, steel grades include GR.B, X42, X46, 52, X56, X60, X65,
Product parameters
API 5L oil pipeline steel pipe:
(1) Standard: API5L ASTM ASME B36.10. DIN
(2) Material: API5LGr.B A106Gr.B, A105Gr.B, A53Gr.B, A243WPB, etc.
(3)Outer diameter: 13.7mm-1219.8mm
(4) Wall thickness: 2.11mm-100mm
(5) Length: 5.8 meters, 6 meters, 11.6 meters, 11.8 meters, 12 meters fixed length
(6) Packaging: spray painting, beveling, pipe caps, galvanized steel strapping, yellow lifting straps, and overall woven bag packaging.
(7) API 5LGR.B pipeline steel seamless steel pipe.
API 5CT oil casing is mainly used to transport liquids and gases such as oil, natural gas, coal gas, water, etc. api5ct oil casing can be divided into three specifications: R-1, R-2 and R-3 according to different lengths. The main materials are B, X42, X46, X56, X65, X70, etc.