Carbon Seamless Steel Pipe / tubes
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.
ASTM A213 covers seamless ferritic and austenitic steel boiler,Boiler Tube, and heat-exchanger tubes for high temperature services
ASTM A213M-09 Material Comparison Tables
| Grade |
UNS Designation |
C |
Mn |
P |
S |
Si |
Vanadium |
Boron |
Niobium |
Nitrogen |
Aluminum |
Tungsten |
| T2 |
K11547 |
0.10-0.20 |
0.30-0.61 |
0.025 |
0.025B |
0.10-0.30 |
... |
... |
... |
... |
... |
... |
| T5 |
K41545 |
0.15 |
0.30-0.60 |
0.025 |
0.025 |
0.5 |
... |
... |
... |
... |
... |
... |
| T5b |
K51545 |
0.15 |
0.30-0.60 |
0.025 |
0.025 |
1.00-2.00 |
... |
... |
... |
... |
... |
... |
| T5c |
K41245 |
0.12 |
0.30-0.60 |
0.025 |
0.025 |
0.5 |
... |
... |
... |
... |
... |
... |
| T9 |
K90941 |
0.15 |
0.30-0.60 |
0.025 |
0.025 |
0.25-1.00 |
... |
... |
... |
... |
... |
... |
| T11 |
K11597 |
0.05-0.15 |
0.30-0.60 |
0.025 |
0.025 |
0.50-1.00 |
... |
... |
... |
... |
... |
... |
| T12 |
K11562 |
0.05-0.15 |
0.30-0.61 |
0.025 |
0.025B |
0.5 |
... |
... |
... |
... |
... |
... |
| T17 |
K12047 |
0.15-0.25 |
0.30-0.61 |
0.025 |
0.025 |
0.15-0.35 |
0.15 |
... |
... |
... |
... |
... |
| T21 |
K31545 |
0.05-0.15 |
0.30-0.60 |
0.025 |
0.025 |
0.50-1.00 |
... |
... |
... |
... |
... |
... |
| T22 |
K21590 |
0.05-0.15 |
0.30-0.60 |
0.025 |
0.025 |
0.5 |
... |
... |
... |
... |
... |
... |
| T23 |
K40712 |
0.04-0.10 |
0.10-0.60 |
0.03 |
0.01 |
0.5 |
0.20-0.30 |
0.0010-0.006 |
0.02-0.08 |
0.015 |
0.03 |
1.45-1.75 |
| T24 |
K30736 |
0.05-0.10 |
0.30-0.70 |
0.02 |
0.01 |
0.15-0.45 |
0.20-0.30 |
0.0015-0.007 |
... |
0.012 |
0.02 |
... |
| T36 |
K21001 |
0.10-0.17 |
0.80-1.20 |
0.03 |
0.025 |
0.25-0.50 |
0.02 |
... |
0.015-0.045 |
0.02 |
0.05 |
... |
| T91 |
K90901 |
0.07-0.14 |
0.30-0.60 |
0.02 |
0.01 |
0.20-0.50 |
0.18-0.25 |
... |
0.06-0.10 |
0.030-0.07 |
0.02 |
... |
| T92 |
K92460 |
0.07-0.13 |
0.30-0.60 |
0.02 |
0.01 |
0.5 |
0.15-0.25 |
0.001-0.006 |
0.04-0.09 |
0.030-0.07 |
0.02 |
1.5-2.00 |
| T122 |
K91271 |
0.07-0.14 |
0.7 |
0.02 |
0.01 |
0.5 |
0.15-0.30 |
0.0005-0.005 |
0.04-0.10 |
0.040- |
0.02 |
1.50-2.50 |
| T911 |
K91061 |
0.09-0.13 |
0.30-0.60 |
0.02 |
0.01 |
0.10-0.50 |
0.18-0.25 |
0.0003-0.006 |
0.06-0.10 |
0.040-0.09 |
0.02 |
0.90-1.10 |
ASTM A213M-09 Mechanical properties
| Grade |
Tensile strength
(Mpa) |
Yield point(Mpa)
not less than |
Elongation(%)
not less than |
Impact(J)
not less than |
Hardness
not less than |
| A213 T2/SA213 T2 |
≥415 |
205 |
|
" |
85HRB |
| A213 T11/SA213 T11 |
≥415 |
205 |
|
" |
85HRB |
| A213 T22/SA213 T22 |
≥415 |
205 |
|
" |
85HRB |
| A213 T23/SA213 T23 |
≥510 |
400 |
20 |
" |
97HRB |
| A213 T24/SA213 T24 |
≥585 |
415 |
20 |
" |
25HRB |
| A213 T91/SA213 T91 |
≥585 |
415 |
20 |
" |
25HRB |
| A213 T911/SA213 T911 |
≥620 |
440 |
20 |
" |
25HRB |
| A213 T22/SA213 T92 |
≥620 |
440 |
20 |
" |
25HRB |
| A213 T122/SA213 T122 |
≥620 |
400 |
20 |
|
25HRB |
| TP304H |
≥515 |
205 |
35 |
|
90HRB |
| TP316H |
≥515 |
205 |
35 |
|
90HRB |
| TP321H |
≥515 |
205 |
35 |
|
90HRB |
| TP347H |
≥515 |
205 |
35 |
|
90HRB |
| S30432 |
≥590 |
235 |
35 |
|
95HRB |
| TP310HCbN |
≥655 |
295 |
30 |
|
100HRB |
Note
A Maximum, unless range or minimum is indicated. Where ellipses (...) appear in this table, there is no requirement, and analysis for the element need not be determined or reported.
B It is permissible to order T2 and T12 with a sulfur content of 0.045 max. See 16.3.
C Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering.
Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.
We can produce different sizes, thicknesses, widths and materials according to your requirements
Product Test
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.
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: Qingdao/Tianjin/Shanghai
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:15-30days custom made for you.
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
Q7:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.
Q9:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q11:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q13:How to pack the products?
A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion and various climate changes during ocean transportation.
Q14:What is your working time?
A:In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry in the coming working day.
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Carbon Seamless Steel Pipe / tubes
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