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Carbon Steel Seamless Pipe/Tube
Seamless steel pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow - liquids and gases (fluids), slurries, powders and masses of small solids.
Hot rolled seamless steel pipe deformation process can be summarized as three stages: extension, perforation and finishing. Hot rolled seamless steel pipes is relative to the cold-rolled, cold rolling is below the recrystallization temperature of the rolling and hot rolled is carried out at above the recrystallization temperature of the rolling. Hot rolled seamless steel pipe can damage the refinement of the crystal grains of the steel, cast microstructure of the steel ingot and eliminate the defects of the microstructure so that the the steel organization compacting, improves the mechanical properties. This improvement is reflected in the rolling direction so that the steel is no longer at a certain extent isotropic; pouring the formation of bubbles, cracks and osteoporosis, under high pressure and temperature can also be welded together.
Hot Rolled Steel Pipes (Seamless Tube) in different size, specifications, grades & thickness as per the client's requirements. The range offered by tubes is available as per the international & national standard and can be available from us at affordable prices. These pipes are used in various application industry like shipbuilding, power plants, oil and gas, automotive, sugar mills and distilleries, cement and construction industries etc.
1. Seamless steel pipe for structure (GBT8162-2008). Mainly used for general structure and mechanical structure. Its representative material (brand): carbon steel, 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.
2. Seamless steel pipes for conveying fluids (GBT8163-2008). It is mainly used for conveying fluid pipelines in engineering and large-scale equipment. The representative material (grade) is 20, Q345, etc.
3. Seamless steel pipes for low and medium pressure boilers (GB3087-2008) are used to manufacture various structures of low and medium pressure boiler superheated steam pipes, boiling water pipes and superheated steam pipes, large smoke pipes, small smoke pipes and arch bricks for locomotive boilers Hot-rolled and cold-drawn (rolled) seamless steel pipes of high-quality carbon structural steel for pipes. The representative material is 10, 20 steel.
Standard | API, ASTM, BS, DIN, GB, JIS |
Outer Diameter | 10.3mm-2032mm |
Wall Thickness | 1.24mm-63.5mm |
Dia Tolerance | Control with in the standard, OD:±1%, WT:±10% |
Materials | 10#, 20#, 45#, Q235, Q345, Q195, ASTM A53/ A106/ A178/ A333/ A335, SAE1018, SAE1020, SAE1045, ST37, ST37-2, ST35, ST45, ST52, ST35.8, 19Mn5, 16Mn, SS400, Q345B, 27SiMn, 20Cr, 40Cr, 12CrMo, 15CrMo, 30CrMo, 35CrMo, 42CrMo |
Length | 1m,3m,4m,5.7m,5.8m,6m,8m,11.8m,12m or according to buyer's request |
Type of pipe coating | Epoxy powder |
Inspection | ISO, BV, SGS, MTC |
Packing | Steel strip packed. Standard Export Seaworthy Package. Suit forall kinds of transport,or as required |
Application | Accessorize, machinery parts, structure steel pipe, piling pipe, sewage and clear water transportation, Line pipe for petroleum and so on |
End Treatment | Plain End/Bevelled End/Grooved End/Threaded End With Plastic Caps |
Shipment time | Within 7-10 workdays after receiving deposit or L/C |
Market | Southeast Asia, Middle East, Africa, Europe, South American and so on |
Descriptions | Grades | Standard | Specification (OD*WT)mm |
Usage |
Structural steel pipe | 20# 35# 45# Q345B, 16Mn, Q345B-E, 20Mn2, 25Mn, 30Mn2, 40Mn2, 45Mn2, SAE1018, SAE1020, SAE1518, SAE1045. | GB/T8162-2008, ASTM A29/A29M-2015 | 6-1020*1.5-100 | For commom structure |
Fluid steel pipe | 10#, 20#, ASTM A106, A210, A53, 16Mn, Q345A.B.C.D.E, Q295B.C.D.E | GB/T8163-2008 | 8-630*1.0-40 | Fluid feeding |
High pressure boiler pipe | 20G, 15MnG, 20MnG, 15CrMoG, 12Cr1MoVG, St35.8, St45, SA106b, SA106c, SA210a, SA210c, A335P2, P11, P12, P22, P91, P92, A213 T2,T9, T11, T12, T22, T23, T91 | GB/5310-2008, ASTM A 106-99, DIN 17175-79 | 14-630*2-80 | Temperature-resistant seamless steel pipe far high-pressure boiler |
Oil casing pipe | API SPEC 5CT J55, K55, N80, L80, C90, C95, P110 | API SPEC 5CT, SY/T6194-96, GB/T222-84, | 10-530*1.5-36 | Boiler pipes for refinery,heatexchangeing pipes,seamless steel pipes for pipeline |
Pipeline | API SPEC 5L, X42, X52, X60, X65,X70,X80 ASTM A53, ASTM A106, ASTM A333, BS301, BS3602, BS3603, BS3604, PSL1, PSL2, DNV-OS-F101, CSA-Z245 |
API SPEC 5L, ISO 3183, GB/T 9711 | 60-630*1.5-40 | Carrying gas,water or oil in the industries of petroleum and natural gas |
Alloy steel pipe | 4140, 42CrMo, 32CrMo, 15CrMo, Cr5Mo, 13CrMo44, 12Cr1MoV P22 T91,P91,P9, T9, Wb36 | GB5310-95, GB9948-88, ASTM A335/A335M, ASTM A213/213M, DIN17175-79, JISG3467-88, JISG3458-88 |
16-824*2-100 | The seamless steal pipes features resistance to high presure,high/low temperature and corrosion ano is used in the industries of petroleum, chemical engineering and. Electric pwer as well as boiler |
Hydraulic prop pipe | 20#, 45#, 27SiMn, 30CrMoSiA | GB/T17396-2009 | 70-377*9-40 | Coal mine hydraulic support and pillar cylinder, column, can also be used for other hydraulic cylinder, column |
Grade | Chemical Composition (%) Max. | ||||||||
C | Mn | P | S | Cu | Ni | Cr | Mo | V | |
A | 0.25 | 0.95 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
B | 0.30 | 1.20 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
Grade | Mechanical Properties | |
Tensile Strength (Mpa) | Yield Strength (Mpa) | |
A | ≥48,000 (≥330) | ≥30,000 (≥205) |
B | ≥60,000 (≥415) | ≥35,000 (≥240) |
NPS | OD | W T | |||||||||||
INCH | MM | SCH10 | SCH20 | SCH30 | STD | SCH40 | SCH60 | XS | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 |
1/2″ | 21.3 | 2.11 | 2.41 | 2.77 | 2.77 | 3.73 | 3.73 | 4.78 | |||||
3/4″ | 26.7 | 2.11 | 2.41 | 2.87 | 2.87 | 3.91 | 3.91 | 5.56 | |||||
1″ | 33.4 | 2.77 | 2.9 | 3.38 | 3.38 | 4.55 | 4.55 | 6.35 | |||||
1.1/4″ | 42.2 | 2.77 | 2.97 | 3.56 | 3.56 | 4.85 | 4.85 | 6.35 | |||||
1.1/2″ | 48.3 | 2.77 | 3.18 | 3.68 | 3.68 | 5.08 | 5.08 | 7.14 | |||||
2″ | 60.3 | 2.77 | 3.18 | 3.91 | 3.91 | 5.54 | 5.54 | 8.74 | |||||
2.1/2″ | 73 | 3.05 | 4.78 | 5.16 | 5.16 | 7.01 | 7.01 | 9.53 | |||||
3″ | 88.9 | 3.05 | 4.78 | 5.49 | 5.49 | 7.62 | 7.62 | 11.13 | |||||
3.1/2″ | 101.6 | 3.05 | 4.78 | 5.74 | 5.74 | 8.08 | 8.08 | ||||||
4″ | 114.3 | 3.05 | 4.78 | 6.02 | 6.02 | 8.56 | 8.56 | 11.13 | 13.49 | ||||
5″ | 141.3 | 3.4 | 6.55 | 6.55 | 9.53 | 9.53 | 12.7 | 15.88 | |||||
6″ | 168.3 | 3.4 | 7.11 | 7.11 | 10.97 | 10.97 | 14.27 | 18.26 | |||||
8″ | 219.1 | 3.76 | 6.35 | 7.04 | 8.18 | 8.18 | 10.31 | 12.7 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 |
10″ | 273 | 4.19 | 6.35 | 7.8 | 9.27 | 9.27 | 12.7 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 |
12″ | 323.8 | 4.57 | 6.35 | 8.38 | 9.53 | 10.31 | 14.27 | 12.7 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 |
14″ | 355.6 | 6.35 | 7.92 | 9.53 | 9.53 | 11.13 | 15.09 | 12.7 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 |
16″ | 406.4 | 6.35 | 7.92 | 9.53 | 9.53 | 12.7 | 16.66 | 12.7 | 21.44 | 26.19 | 30.96 | 36.53 | 40.19 |
18″ | 457.2 | 6.35 | 7.92 | 11.13 | 9.53 | 14.27 | 19.05 | 12.7 | 23.83 | 39.36 | 34.93 | 39.67 | 45.24 |
20″ | 508 | 6.35 | 9.53 | 12.7 | 9.53 | 15.09 | 20.62 | 12.7 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 |
22″ | 558.8 | 6.35 | 9.53 | 12.7 | 9.53 | 22.23 | 12.7 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | |
24″ | 609.6 | 6.35 | 9.53 | 14.27 | 9.53 | 17.48 | 24.61 | 12.7 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 |
26″ | 660.4 | 7.92 | 12.7 | 9.53 | 12.7 | ||||||||
28″ | 711.2 | 7.92 | 12.7 | 15.88 | 9.53 | 12.7 |
Grade | Chemical Compositions | |||||||||
C | Mn | P | S | Si | Cr | Cu | Mo | Ni | V | |
A106-A | ≤0.25 | 0.27-0.93 | ≤0.035 | ≤0.035 | ≥0.10 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 |
A106-B | ≤0.30 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥0.10 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 |
A106-C | ≤0.35 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥0.10 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 |
Grade | Mechanical Properties | |||||||||
Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation(%) | ||||||||
A106-A | ≥330 | ≥205 | 30 | |||||||
A106-B | ≥415 | ≥240 | 30 | |||||||
A106-C | ≥485 | ≥275 | 30 |
Standard | Steel Grade |
Chemical Composite | ||||||||
C | Mn | P | S | Si | V | Nb | Ti | CEpcm | ||
API 5L | L210 or A | ≤0.22 | ≤0.90 | ≤0.030 | ≤0.030 | ≤0.25 | ||||
L245 or B | ≤0.28 | ≤1.20 | ≤0.030 | ≤0.030 | ≤0.25 | |||||
L290 or X42 | ≤0.28 | ≤1.30 | ≤0.030 | ≤0.030 | ≤0.25 | |||||
L320 or X46 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | ≤0.25 | |||||
L360 or X52 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | ≤0.25 | |||||
L390 or X56 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | ≤0.25 | |||||
L415 or X60 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | ≤0.25 | |||||
L245R or BR | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | C | C | ≤0.04 | ≤0.25 | |
L290R or X42R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | |
L245N or BN | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | C | C | ≤0.04 | ≤0.25 | |
L290N or X42N | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | |
L320N or X46N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.07 | ≤0.05 | ≤0.04 | ≤0.25 | |
L360N or X52N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | |
L390N or X56N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | |
L415N or X60N | ≤0.24 | ≤1,40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | Negotiate |
Standard | Steel Grade | Yield Strength | Tensile Strength |
API 5L | L210 or A | 210 | 335 |
L245 or B | 245 | 415 | |
L290 or x42 | 290 | 415 | |
L320 or X46 | 320 | 435 | |
L360 or X52 | 360 | 460 | |
L390 or X56 | 390 | 490 | |
L415 or X60 | 415 | 520 | |
L245R or BR | 245~450 | 415~760 | |
L290R or X42R | 290~495 | 415~760 | |
L245N or BN | 245~450 | 415~760 | |
L290N or X42N | 290~495 | 415~760 | |
L320N or X46N | 320~525 | 435~760 | |
L360N or X52N | 360~530 | 460~760 | |
L390N or X56N | 390~545 | 490~760 | |
L415N or X60N | 415~565 | 520~760 |
Steel pipe nominal outer diameter range | Steel pipe outer diameter | Coating category | Coating | Coating thickness |
DN100~600 | 114.3~609.6 | 3PE (three-layer polyethylene) | First layer: epoxy powder (green) | 2.0~4.5mm |
Intermediate layer: adhesive (white) | ||||
Outermost layer: polyethylene (black) | ||||
2PE (two layers of polyethylene) | First layer: adhesive | 2.0~4.5mm | ||
Outermost layer: polyethylene | ||||
DN80~600 | 88.9~609.6 | Epoxy powder | Epoxy powder | 200~400um |
2FBE (Double layer epoxy powder) | First layer: epoxy powder (green) | 400~800um | ||
Outermost layer: reinforced epoxy powder (gray green) | ||||
DN100~600 | 114.3~609.6 | 3PP (three layers of polypropylene) | First layer: epoxy powder (green) | 2.5~3mm |
Intermediate layer: adhesive (white) | ||||
Outermost layer: polypropylene (white) |
We will control the quality from part of material steel pipe, each pipe produced will be have it is own identify label, quality will check the chemical component and physical property and then provide material test certificate. Size dimension will be checked and show pictures to customer to guarantee all goods will be meet requirement.
Product Advantages:
Carbon steel pipe and tube are used in high-pressure conditions. They are highly resistant to shock and vibration, making it ideal to transport fluids.
Carbon steel pipes are widely used in a number of industries, such as construction material, buidlings, bridges, transporting water and sewage, oil and gas industries, boiler and condenser tubes, high-pressure applications, and chemical processing.
- Construction material / bridges
- Transporting water and sewage
- Oil and gas industries
- Boiler and condenser tubes
- High-pressure applications
- Chemical processing
1) Packaging: 3 layers of packing. Inside is craft paper, Middle is water plastic film and outside GI steel sheet to be covered by steel strips with lock, with inner coil sleeve or as customers' requirements.
2) Shipping: We have long-term cooperation with many experienced shipping companies and will find the most suitable mode of transportation for you.
3) Trade terms: FOB/CIF/CFR
4) Shipping port:Tianjin
5) Shipment: A: Length: ≤6m, loaded in 20GP Container. B: Length: ≤12m, loaded in 40GP Container.
Remark: Size of 20GP Container (inside :5898*2352*2393mm); Size of 40GP Container (inside:12032*2352*2393mm); Size of 40HQ Container (inside:12032*2352*2698mm).
6) Delivery time: Normal size: 7-15days send from warehouse directly. Special size:15-25days custom made for you.