API5l/ASTM A106/A53 Gr. B Seamless Carbon Steel Pipes Adequate Inventory Strong Productivity Short Production Cycle Rapid Delivery

Seamless Carbon Steel Pipes - With ample inventory, strong productivity, and rapid delivery, our factory provides top-quality API5l, ASTM A106, and A53 Gr. B pipes.
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  • Overview
  • Product Specification
  • Product Display
  • Product Test
  • About Us
  • Packaging and Transportation
  • FAQ

Basic Info.

Model NO.
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Construction & Decoration, Special Purpose
Section Shape
Fluid Pipe, Boiler Pipe
5.8m, 6.4m, 6m, 11.8m, 12m, or as Required
1-120 mm
Delivery Time
8-14 Days
Processing Service
Bending, Welding, Decoiling, Punching, Cutting
Transport Package
Standard Seaworthy Packing
Tianjin, China
Production Capacity
10000 Tons Per Month

Product Description

API5l/ASTM A106/A53 Gr. B Seamless Carbon Steel Pipes Adequate Inventory Strong Productivity Short Production Cycle Rapid Delivery Carbon Seamless Steel Pipes / 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.


Product Specification

Out Diameter 13.7mm-914mm
Wall Thickness 2mm-120mm
Length 2m-12m
Producing Standard American ASME B36.10M, ASTM API 5L, API 5CT
Japanese JIS,German DIN,Chinese GB,BS standard
Steel Grade ASTM A53, A106, A210, A252, A333 etc;
PSL1: A, B, x42, x46, x52, x56, x60, x65, x70
PSL2: B, x42, x46, x52, x56, x60, x65, x70, x80
JIS STPG42, G3454, G3456 etc;
DIN St37, St42, St45, St52, DIN1626, DIN17175;
GB 20#, Q345, 16Mn etc.
Special specifications Available according to customer's requirements and quantity.
End Shape Beveled end, plain end, varnished, or adding plastic caps to protect the two ends as per customer's requirements
Surface treatment Painted, Oiled, galvanized, phosphate etc
Usage 1.Widely used in the mechanical treatment field, petrochemical industry, transport and construction field
2.Ordinary structural purposes and mechanic structural purposes, for example in construction field, fulcrum bearing etc;
3.The transportation of fluids in the projects and big equipments, for example transport of water, oil, gas etc
4.Can be used in low and medium pressure boiler for the transportation of fluids, for example steam tube, big smoke tube, small smoke tube, generating tube etc
Third party inspection Welcome you to send a third party inspecting company (BV, SGS etc) to check the quality of our final products.

ASTM A106 Seamless Carbon Steel Tube
ASTM A106/ASME SA106 is the standard specification for seamless carbon steel pipe applied for high temperature services. It includes three grades A, B and C, and common use grade is A106 Grade B. It used in different industries not only for pipeline systems like oil and gas, water, mineral slurry transmission, but also for boiler, construction, structural purposes.
ASTM A106 Grade B pipe is equivalent to ASTM A53 Grade B and API 5L B on chemical position and mechanical properties, in general use carbon steel and yiled strength minimum 240 MPa, tensile strength 415 Mpa.
1. Standards: ASTM A106 (ASME SA106)
2. Products mainly used: apply to bending, curling and similar forming process.
3. The main products of steel / steel grade: Gr.A, Gr.B, Gr.C.
4. Specifications: diameter: 10.3 to 114.3 mm thickness: 0.8 to 12 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe.
5. Chemical composition and mechanical properties
6. JIS Number and Corrensponding Foreign Standards
Chemical compositions and mechanical properties
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

ASTM A53 Carbon Steel Pipe & Tube
ASTM A53 (ASME SA53) carbon steel pipe is a specification that covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1/8″ to NPS 26.  A 53 is intended for pressure and mechanical applications and is also acceptable for ordinary uses in steam, water, gas, and air lines.
ASTM A53 seamless steel pipe chemical composition:
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
ASTM A53 seamless steel pipe mechanical properties:
Grade Mechanical Properties
Tensile Strength (Mpa) Yield Strength (Mpa)
A ≥48,000 (≥330) ≥30,000 (≥205)
B ≥60,000 (≥415) ≥35,000 (≥240)

API 5L line pipe  (Seamless and welded pipe) of all grades have PSL1 and PSL2 two product specifications, they are different on chemical composition, manufacturing processes, mechanical strength, heat treatment, test records, traceability etc.
PSL is the short name of product standard level. The product standard level of line pipe have PSL1 and PSL2, also we could say the quality standard divided in PSL1 and PSL2. PSL2 is higher than PSL1, not only the inspection standard is different, also the chemical property, mechanical strength standards are different. So when place the order for the API 5L line pipe, there should be stated clearly for the size, grades these general specification, also have to clarify the production standard leve, PSL1 or PSL2.
PSL2 is more strictly than PSL1 on the chemical properties, tensile strength, non-destructive test, and impact test.
API 5L PSL1 steel line pipe not required to do the impact test.
For API 5L PSL2 steel line pipe, except Grade X80, all the other grades of API 5L line pipe required the impact test at temperature of 0ºC. The average value of Akv: longitudinal direction≥41J, tranverse direction≥27J.
For API 5L Grade X80 PSL2 line pipe, at 0ºC for all the size, impact test the Akv average value: longitudinal direction≥101J, tranverse direction≥68J.
For API 5L PSL2 line pipe shall perform the hydraulic test for each single pipe, and in the API standard specification not permit to have Non-destructive test replace the hydraulic test, this also is a big difference between Chinese standard and API 5L standard. For PSL1 not required Non-destructive test, for PSL2 shall do the Non-destructive test for each single pipe.
Chemical composition and mechanical strength is also different between API 5L PSL1 line pipe and API 5L PSL2 line pipe. For the detailed specification as below. API 5L PSL2 have restrictions with the carbon equivalent content, where for the carbon mass fraction greater than 0.12%, and equal or less than 0.12%. Different CEQ shall be applied. For line pipe in PSL2 tensile strength have maximum limits.

API 5L PSL 1 / PSL 2 Chemical Composition:
Standard Product
Chemical Composite
C Mn P S Si V Nb Ti CEpcm
API 5L PSL 1 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
PSL 2 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
API 5L PSL 1 / PSL 2 Mechanical Properties:
Standard Product specification category Steel Grade Yield Strength Tensile Strength
API 5L PSL 1 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
PSL 2 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)

INCH OD API 5L ASTM A53 A106 Standard Wall Thickness
(MM) SCH 10 SCH 20 SCH 40 SCH 60 SCH 80 SCH 100 SCH 160
(mm) (mm) (mm) (mm) (mm) (mm) (mm)
1/4" 13.7     2.24   3.02    
3/8" 17.1     2.31   3.2    
1/2" 21.3 2.11   2.77   3.73   4.78
3/4" 26.7 2.11   2.87   3.91   5.56
1" 33.4 2.77   3.38   4.55   6.35
1-1/4" 42.2 2.77   3.56   4.85   6.35
1-1/2" 48.3 2.77   3.68   5.08   7.14
2" 60.3 2.77   3.91   5.54   8.74
2-1/2" 73 3.05   5.16   7.01   9.53
3" 88.9 3.05   5.49   7.62   11.13
3-1/2" 101.6 3.05   5.74   8.08    
4" 114.3 3.05 4.50 6.02   8.56   13.49
5" 141.3 3.4   6.55   9.53   15.88
6" 168.3 3.4   7.11   10.97   18.26
8" 219.1 3.76 6.35 8.18 10.31 12.70 15.09 23.01
10" 273 4.19 6.35 9.27 12.7 15.09 18.26 28.58
12" 323.8 4.57 6.35 10.31 14.27 17.48 21.44 33.32
14" 355 6.35 7.92 11.13 15.09 19.05 23.83 36.71
16" 406 6.35 7.92 12.70 16.66 21.44 26.19 40.49
18" 457 6.35 7.92 14.27 19.05 23.83 29.36 46.24
20" 508 6.35 9.53 15.09 20.62 26.19 32.54 50.01
22" 559 6.35 9.53   22.23 28.58 34.93 54.98
24" 610 6.35 9.53 17.48 24.61 30.96 38.89 59.54
26" 660 7.92 12.7          

Product Display

We can produce different sizes, thicknesses, widths and materials according to your requirements
API5l/ASTM A106/A53 Gr. B Seamless Carbon Steel Pipes Adequate Inventory Strong Productivity Short Production Cycle Rapid Delivery

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.
API5l/ASTM A106/A53 Gr. B Seamless Carbon Steel Pipes Adequate Inventory Strong Productivity Short Production Cycle Rapid Delivery
Accept inspection from a third party designated/paid by the buyer, such as SGS, BV.
Recognized by customers in Malaysia, Indonesia, Singapore, the Philippines, Australia, Peru and the United Kingdom. We have ISO9001/18001, CE certificates.

API5l/ASTM A106/A53 Gr. B Seamless Carbon Steel Pipes Adequate Inventory Strong Productivity Short Production Cycle Rapid Delivery

About Us

Our company is a steel supplier from China, located in Tianjin City, one of the largest steel producers in China. The company integrates the manufacturing, wholesale, material processing and warehousing of stainless steel, aluminum, copper and carbon steel materials, and has established long-term and stable cooperative relations with many well-known steel plants, such as Tisco, Baosteel, Hongwang, Zhangpu, Liangzhong and Jiugang.

Mainly products cover carbon steel tubes, stainless steel tubes, galvanized steel coil, ppgi steel coil, stainless steel coil, carbon steel coil and carbon steel profiles, gi wire, hollow anchor bar, section steel, steel rebar etc. Our company is equipped with plasma cutting machine, coil flattening equipment, laser cutting machine, 8K mirror, frosted wire drawing, filming and titanium plating equipment, which can flatten, split, shear, oil mill wire drawing, and roll oil film wire drawing on stainless steel materials, 8K mirror, titanium and other processing.

In addition, the company's characteristic business: zero-cutting, rounding, square cutting, special-shaped cutting, castings, forgings, product thicknesses up to 150mm, various special materials and specifications can be customized to steel mills.

Companies adhering to the "efficient, win-win" business philosophy, continue to provide customers with professional, quality products and value-added services, continuous progress and learning to meet customer needs. Now the company has entered the period of rapid development of global trade, looking forward to more cooperation.

API5l/ASTM A106/A53 Gr. B Seamless Carbon Steel Pipes Adequate Inventory Strong Productivity Short Production Cycle Rapid Delivery
Marketing  Campaign
API5l/ASTM A106/A53 Gr. B Seamless Carbon Steel Pipes Adequate Inventory Strong Productivity Short Production Cycle Rapid Delivery

Packaging and Transportation

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.

API5l/ASTM A106/A53 Gr. B Seamless Carbon Steel Pipes Adequate Inventory Strong Productivity Short Production Cycle Rapid Delivery


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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