API 5L Seamless Steel Pipe
  • API 5L Seamless Steel PipeAPI 5L Seamless Steel Pipe
  • API 5L Seamless Steel PipeAPI 5L Seamless Steel Pipe
  • API 5L Seamless Steel PipeAPI 5L Seamless Steel Pipe
  • API 5L Seamless Steel PipeAPI 5L Seamless Steel Pipe
  • API 5L Seamless Steel PipeAPI 5L Seamless Steel Pipe

API 5L Seamless Steel Pipe

As the professional manufacture, we would like to provide you Pengfa API 5L Seamless Steel Pipe. And we will offer you the best after-sale service and timely delivery. Compared with ordinary steel pipes, the heat treatment scheme of seamless steel pipes is more special. Generally, the surface is quenched after tempering. This steel pipe has many advantages, such as no obvious tempering brittleness, small deformation during quenching, low temperature impact toughness and so on. It can also be used in various industries, such as fluid seam steel pipe, seamless steel pipe for boiler, seamless steel pipe for petroleum cracking and so on.

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Product Description

You can rest assured to buy Pengfa API 5L Seamless Steel Pipe from our factory. We insist on standardization, systematization and standardization of production, implement an all-round and multi-angle quality management strategy to ensure product quality, whole process quality inspection and tracking, and not let go of every small link. API 5L Seamless Steel Pipe is a type of steel pipe that is manufactured using a spiral welding process. The process involves forming a spiral steel strip and then welding the edges together using a submerged arc welding process. The resulting pipe has a helical seam that runs the length of the pipe.

      

Product Parameter (Specification)

Cold Drawn Lu Li 12m5130 Lu Li 12m5030 Tobacco Big Seamless Giant Energy Expansion
 7 mm
14*2-3 12000 57*3. 5 140*4 325*6.5 5500
16*2-4 8600 60*3.5 5000 140*5 4850 325*7 Big Seamless 5260 377 5150
18*2-4 8300 76*3. 5 4880 140*6 4630 325*7*12 5450 426 5150
21*2-4 6900 76*4 4800 140*10 4630 325*9 8 mm
22*2-4 6900 89*4 4800 159*4.5 4880 325*10 377 4850
25*2-5 6300 108*4 4800 159*5 4660 356*8 5300 406 4850
27*2-4 6300 76*4. 5 4690 159*6 4630 356*8.5 5300 426 4850
27*5-6 6300 89*4.5 4690 159*7 4630 356*9 5300 457 5000
32*2.5 5800 108*4. 5 4690 159*8 4630 377*8Baotou Steel 5450 480-530 5000
32*3 5250 73*5 4630 168*5 4750 377*8Tobacco 610-630 5200
32*3. 5-4 5250 76*5 4630 168*6 4580 377*9 Tobacco 9 mm
32*4.5 5250 89*5 4630 168*6.7 4580 377*9.5 5280 426-457 4800
34*3 5250 89*5.2 4630 168*7 4580 377*10 5280 480-530 4800
34*3. 5-4 5250 108*5 4630 219*6 4750 377*12 5300 610-630 4800
34*5-6 5250 76*6 4600 219*6.5 4760 406*9.5 5300 720 5100
38*3-4 5200 89*6 4600 219*7 4560 406*10 5300 820 5200
38*5-6 5200 108*6 4600 219*7.8 4560 426*8 5400 10mm
Hot Rolled 114*4 4900 219*8 4560 426*9 5400 377*10 4750
42*3 4950 114*4. 5 4750 219*10 426*9.5 5300 426*10 4750
42*3. 5-4 4800 114*5 4630 273*6.5 4980 426*10 5300 480*10 4750
42*5-6 4800 114*5.7 4630 273*7 4760 457*9 508*10 4750
45*3 4900 114*6 4600 273*8 4750 457*20 530*10 4750
45*3. 5-4 4800 114*8 4600 273*8.5 4560 Ju Neng Mo Long 610*10 4850
45*5-6 4800 133*4 5000 273*9 4560 325*8 630*10 4850
48*3 4850 133*4. 5 4730 273*10 4560 325*9 720*10 5050
48*3. 5-4 4750 133*5 4660 325*8 4730 325*10 4580 820*10 5150
48*5-6 4750 133*6 4630 325*8.5 4640 325*11 4530 11mm or more
57*3 4950 133*4Big Seamless 5300 325*9 4610 325*12 4530 480 4750
57*3. 5 4700 27*2.7-3 6m 6800 325*10 4580 325*13 4530 508 4750
57*4 4700 32*3-4 6m 5550 325*14 4530 530 4750
57*5-6 4700 34*3.5 6m 5550 Shandong 325*15 4530 610 4850
60*3 4800 42*5 6m 325*16 4530 630 4850
60*3.5 4700 48*3. 5 6m 5000 194*6 5000 720 5050
60*4 4700 57*3. 5 6m 4950 219*6 4750 820 5150
60*5-6 4700 57*4 6m 4950
6m fixed length*130 Middle disconnect*100 Stock small tube 6m fixed length*300


The production process of API 5L Seamless Steel Pipe:

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

The production of domestic API 5L Seamless Steel Pipe 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, the API 5L Seamless Steel Pipe 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 API 5L Seamless Steel Pipe. 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.


API 5L Seamless Steel Pipe are divided into the following varieties due to their different uses:

GB/T8162-1999 (Seamless Steel Tubes 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 (API 5L Seamless Steel Pipe 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 (API 5L Seamless Steel Pipe 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 (API 5L Seamless Steel Pipe 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 API 5L Seamless Steel Pipe 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 (API 5L Seamless Steel Pipe 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




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