Seamless Pipe Full Form

You can confidently purchase Pengfa Seamless Pipe Full Form directly from our factory, where we adhere to strict standards of standardization, systematization, and quality control throughout the production process. We employ a comprehensive, multi-faceted quality management approach that encompasses whole-process quality inspection and tracking, ensuring no detail is overlooked.

Our Seamless Pipe Oil and Gas, tailored for petroleum and natural gas industries, employs a unique spiral welding technique that involves shaping a spiral steel strip and fusing its edges seamlessly through submerged arc welding. This results in a pipe with a helical seam along its length, crafted specifically for resilience and efficiency.

When it comes to oil and gas applications, seamless pipes play a pivotal role in the energy sector. Distinguished by their smooth inner and outer surfaces, absence of any welding seams, and unparalleled strength and longevity, these pipes are indispensable in high-pressure, high-temperature environments where pipeline integrity is paramount.

The versatility of our Seamless Pipe Full Form lies in the diverse range of steel grades we utilize, including carbon steel, alloy steel, and stainless steel. The selection of material is meticulously made based on factors such as the required pressure and temperature ratings, the nature of the fluid being conveyed, and the anticipated lifespan of the pipeline, ensuring optimal performance tailored to each unique application.

Crafted with meticulous attention to detail, Pengfa Seamless Pipe utilizes only the finest raw materials sourced from reputable suppliers, combined with cutting-edge manufacturing technologies. This fusion ensures that every pipe produced is not only durable and reliable but also capable of withstanding the harshest operational conditions, safeguarding against potential hazards and ensuring continuous, uninterrupted performance.

As a trusted and reliable supplier, Pengfa understands the unique requirements of each customer and is dedicated to providing seamless pipes that are custom-tailored to meet their specific needs. This commitment to customization, coupled with a relentless pursuit of quality, ensures that Pengfa Seamless Pipe delivers optimal performance and long-lasting value, far exceeding the expectations of even the most discerning clients.

Pengfa Seamless Pipe, the full form of our esteemed product, stands as a testament to China's prowess in manufacturing and our unwavering dedication to delivering unparalleled quality to the oil and gas industry worldwide.

Product Parameter (Specification)

The production process of Seamless Pipe Oil and Gass:

①Main production process of hot-rolled seamless steel pipe:

The production of domestic Seamless Steel Tubes for Petroleum and Natural Gas mainly goes through the following processes; tube billet—cutting—heating—perforation—rolling—fixing (reducing) diameter—straightening—cutting head and tail—inspection—packaging——storage.

According to the different pipe rolling methods, Seamless Pipe Oil and Gas rolling mill can be divided into automatic pipe rolling unit, continuous rolling pipe unit (MPM two-roll continuous rolling mill, PQF three-roll continuous rolling mill), Assel rolling mill, Accu rolling mill, Periodic pipe rolling units, etc. The newly installed rolling mills are mostly MPM continuous rolling pipe units and PQF three-roll continuous rolling pipe units, such as Tianjin Steel Pipe Company’sΦ460,Φ258 PQF continuous rolling pipe unit, Hengyang Steel Pipe’sΦ273 MPM continuous rolling pipe unit, Pansteel Chengdu SeamlessΦ340 MPM continuous pipe rolling unit,Φ159 PQM continuous pipe rolling mill, AnshanΦ170 PQF continuous pipe rolling mill, etc.

Tube blank piercing is the most important deformation process in the production of hot-rolled Seamless Pipe Oil and Gas. Its task is to pierce and roll solid tube blanks into hollow capillary tubes. According to the structure of the piercer and the deformation characteristics of the piercing process, the existing piercing methods can be divided into: cross-rolling piercing, push-rolling piercing and pressure piercing, and cross-rolling piercing is the most widely used. There are three types: roll type, fungus type (conical) and disc type. The roll piercer rolls are used in small rolling mills, while the large unit piercers use fungus rolls. Disc piercers are rarely used. Regardless of the shape of the roll, in order to ensure the realization of the tube blank biting and piercing process, there are piercing cones (roll entrance cones), rolling cones (roll exit cones) and roll rolling strips (the transition between the entrance cone and the exit cone) )composition. Most of the piercing machine rolls adopt the combined structure of the roll shaft and the roll sleeve, and the two adopt a direct interference combination or a keyed interference combination.

Seamless Steel Tubes for Petroleum and Natural Gas are divided into the following varieties due to their different uses:

GB/T8162-1999 (Seamless Pipe Oil and Gas for Structures). Mainly used for general structure and mechanical structure. Its representative material (grade): carbon steel 20#, 45#; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.

GB/T8163-1999 (Seamless Steel Tubes for Petroleum and Natural Gas for conveying fluids). It is mainly used for conveying fluid pipelines on engineering and large equipment. Representative materials (grades) are 20#, Q345, etc.

GB3087-1999 (Seamless Steel Tubes for Petroleum and Natural Gas for low and medium pressure boilers). It is mainly used for pipelines for conveying low and medium pressure fluids in industrial boilers and domestic boilers. The representative materials are 10# and 20#.

GB5310-1995 (seamless steel pipes for high pressure boilers). It is mainly used for high temperature and high pressure transport fluid headers and pipelines on boilers in power plants and nuclear power plants. Representative materials are 20G, 12Cr1MoVG, 15CrMoG, etc.

GB5312-1999 (carbon steel and carbon-manganese steel seamless pipes for ships). It is mainly used for Class I and II pressure pipes for ship boilers and superheaters. Representative materials are 360, 410, 460 steel grades, etc.

GB1479-2000 (Seamless Steel Tubes for Petroleum and Natural Gas for high-pressure fertilizer equipment). It is mainly used to transport high-temperature and high-pressure fluid pipelines on chemical fertilizer equipment. Representative materials are 20#, 16Mn, 12CrMo, 12Cr2Mo, etc.

GB9948-1988 (seamless steel pipes for petroleum cracking). Mainly used in boilers, heat exchangers and pipelines for conveying fluids in petroleum smelters. Its representative materials are 20#, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb and so on.

GB18248-2000 (seamless steel pipes for gas cylinders). It is mainly used to make various gas and hydraulic cylinders. Its representative materials are 37Mn, 34Mn2V, 35CrMo and so on.

GB/T17396-1998 (hot-rolled seamless steel tubes for hydraulic props). It is mainly used to make coal mine hydraulic supports, cylinders and columns, and other hydraulic cylinders and columns. Its representative materials are 20#, 45#, 27SiMn and so on.

GB3093-1986 (high pressure seamless steel pipe for diesel engine). It is mainly used for high-pressure fuel pipes of diesel engine injection systems. The steel pipe is generally a cold drawn pipe, and its representative material is 20A.

GB/T3639-1983 (cold-drawn or cold-rolled precision seamless steel tubes). Mainly used for mechanical structures and carbon press equipment, steel pipes requiring high dimensional accuracy and good surface finish. It represents the material 20#, 45# and so on.

GB/T3094-1986 (cold-drawn Seamless Steel Tubes for Petroleum and Natural Gas special-shaped steel pipe). It is mainly used to make various structural parts and parts, and its material is high-quality carbon structural steel and low-alloy structural steel.

GB/T8713-1988 (Precision inner diameter seamless steel tubes for hydraulic and pneumatic cylinders). It is mainly used to make cold-drawn or cold-rolled seamless steel pipes with precise inner diameters for hydraulic and pneumatic cylinders. Its representative materials are 20#, 45# and so on.

GB13296-1991 (stainless steel seamless steel pipes for boilers and heat exchangers). It is mainly used in boilers, superheaters, heat exchangers, condensers, catalytic tubes, etc. of chemical enterprises. High temperature, high pressure and corrosion resistant steel pipes. Its representative materials are 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, etc.

GB/T14975-1994 (stainless steel seamless steel pipe for structural use). It is mainly used for general structure (hotel, restaurant decoration) and chemical enterprise mechanical structure resistant to air, acid corrosion and steel pipe with certain strength. Its representative materials are 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, etc.

GB/T14976-1994 (stainless steel seamless steel pipe for fluid transportation). It is mainly used for pipelines conveying corrosive media. Representative materials are 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti, etc.

YB/T5035-1993 (Seamless Steel Tubes for Petroleum and Natural Gas for automobile axle shaft casings). It is mainly used to make high-quality carbon structural steel and alloy structural steel hot-rolled seamless steel tubes for automobile half-axle casings and axle tubes for drive axle housings. Its representative materials are 45#, 45Mn2, 40Cr, 20CrNi3A and so on.

Production process flow chart of hot-rolled seamless steel pipe:

Product Details