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Carbon Steel Pipe

Carbon Steel Pipe

Carbon steel pipe in the performance of the outstanding performance is high yield strength and stress corrosion resistance, has good weldability, welding cold crack and hot crack are less sensitive.
Carbon steel tubes are divided into hot rolled and cold rolled (drawn) steel tubes.
Hot rolled carbon steel tubes are divided into general steel tubes, low and medium pressure boiler tubes, high pressure boiler tubes, alloy steel tubes, stainless steel tubes, petroleum cracking tubes, geological tubes and other steel tubes.
Cold rolled (dial) carbon steel pipe generally are divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, other steel pipe, also includes carbon thin wall steel pipe, alloy thin wall steel pipe, stainless steel pipe, special-shaped steel pipe.
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Product Parameters

Carbon Steel: Properties, Production, Examples and Applications


Carbon steel is an iron-carbon alloy, which contains up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements, however, they often contain manganese. The maximum manganese, silicon and copper content should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.


Types of carbon steel and their properties


Carbon steel can be classified into three categories according to its carbon content: low-carbon steel (or mild-carbon steel), medium-carbon steel and high-carbon steel [1]. Their carbon content, microstructure and properties compare as follows:



Carbon content (wt.%)MicrostructurePropertiesExamples
Low-carbon steel< 0.25Ferrite, pearliteLow hardness and cost. High ductility, toughness, machinability and weldability
Medium-carbon steel0.25 – 0.60MartensiteLow hardenability, medium strength, ductility and toughness
High-carbon steel0.60 – 1.25PearliteHigh hardness, strength, low ductility


Carbon Steel Description



Grade:


1)GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C,Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E


2)EN: S185,S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q 


3)ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80 


4)JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE



PRODUCT DETAILS


Place of Origin:China
Oiled or Non-oiled:Non-oiled
Alloy Or Not:Non-Alloy
Tolerance:±1%
Special Pipe:Thick Wall Pipe,EMT Pipe
Out Diameter:10-1500mm
wall thickness0.4-25mm
Length:1-12m
Shape:Round, Square or Rectangular
Itmes:4 6 12 inch SCH 40 80 black carbon steel pipe
processing serviceBending, Welding, Decoiling, Punching, Cutting
Secondary Or Not:Non-secondary
technologyhot rolled, cold rolled, black annealed
Keyword:welded steel pipe
End protector:Plastic Pipe Cap
Thickness:0.35 - 100mm
Standard:API, ASTM, bs, GB, API 5L, ASTM A106-2006,ASTM A53-2007, BS 1387, BS 1139, BS EN10219, GB 3087-1999, GB/T3901,EN, BS, JIS
Technique:ERW /LSAW/SSAW
Surface Treatment:Paint oil; Varnish; Galvanized;
Galvanize the raw strip steel;
Certificate:Bsi, RoHS, SNI, BIS, SASO, SONCAP, sirm, ISO9001,API,ISO
Grade:10#, 20#, 45#, Q235, Q345, Q195, Q215, ST52,
ST42, ST35, 10#-45#, Q195-Q345, ST35-ST52
Q235, Q235B, S275, S275jr, A53, st37,  st52
Q195 → Grade B, SS330,SPHC, S185
Q215 → Grade C,CS Type B,SS330, SPHC
Q235 → Grade D,SS400,S235JR,S235JO,S235J2
Q345 → SS500,ST52
Usage:mechanical manufacture, construction field,
metallurgy industry, farm vehicles, agriculture greenhouse,
automotive industry, railway, highway guardrail,
 container frame, furniture, decoration, steel structure,
Chemical Fertilizer Pipe,Structure Pipe, Building Construction
packageStandard Seaworthy Packing
tied with steel trips,then wrapped by plastic material
or as request
Payment Term:L/C T/T (30%DEPOSIT)


StandardGradeGeneral SizeDelivery Condition
ASTM A36A36/A36-B5-20 * 2300-2500 * CBoron added or Black Condition
ASTM A283A283-B/A283C5-20 * 2300-2500 * CBoron added or Black Condition
ASTM A572A572Gr50-B/A572Gr42-B5-20 * 2300-2500 * CBoron added or Black Condition
ASTM A515A515Gr705-20 * 2300-2500 * CBoron added or Black Condition
ASTM A516A516Gr705-20 * 2300-2500 * CBoron added or Black Condition
JIS G 3101SS400-B5-20 * 2300-2500 * CBoron added or Black Condition
JIS G3136SN400B5-20 * 2300-2500 * CBoron added or Black Condition
EN10025-2:2004S235JR-S355K2+N5-20 * 2300-2500 * CBoron added or Black Condition
EN10025-5:2004S355J2W/S355K2W5-20 * 2300-2500 * CBoron added or Black Condition


MaterialChinaFormerSoviet UnionAmericaEnglandJapanFrench
GBГOCTASTMBSJISNF
High Quality Carbon Structural Steel08F08KП1006040A04S09CK
881008045M10S9CK
10F
1010040A10
XC10
101010,101,012045M10S10CXC10
15151015095M15S15CXC12
20201020050A20S20CXC18
25251025
S25C
30301030060A30S30CXC32
35351035060A35S35CXC38TS
40401040080A40S40CXC38H1
45451045080M46S45CXC45
50501050060A52S50CXC48TS
55551055070M55S55CXC55
60601060080A62S58CXC55
15Mn15Г10,161,115080A17SB46XC12
20Mn20Г10,211,022080A20
XC18
30Mn30Г10,301,033080A32S30CXC32
40Mn40Г10,361,040080a40S40C40M5
45Mn45Г10,431,045080A47S45C
50Mn50Г10,501,052030A52080M50S53CXC48





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Carbon Steel Pipe

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Carbon Steel Pipe

Product Packaging

Carbon Steel Pipe


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FAQ

A:

All our steel products are manufactured using genuine materials that meet national standards; we strictly adhere to national production regulations and strictly prohibit the use of non-standard specifications, adulterated materials, or defective goods. For every shipment, we provide a complete set of documentation—including material specifications, quality inspection reports, and factory certificates—free of charge. Our products support third-party re-inspection, on-site acceptance, and project filing, ensuring full traceability of quality throughout the process.

A:

We support custom processing for a full range of steel products. For items such as steel plates, profiles, pipes, and round bars, we provide tailored services—including cutting, bending, drilling, trimming, beveling, anti-corrosion painting, and hot-dip galvanizing—based on client construction drawings and on-site requirements. We can process materials to any dimension or non-standard specification, meeting the unique needs of various engineering projects and equipment manufacturing applications.

A:

We offer free sample delivery. To ensure peace of mind during the procurement process, we provide steel samples matching your specifications, allowing you to verify material quality, check manufacturing processes, and facilitate acceptance inspections by the project owner. Testing samples prior to placing bulk orders helps minimize procurement risks.

A:

Steel is a commodity with prices that fluctuate in real-time based on futures markets, raw material costs, and inventory levels; since fixed list prices can lead to discrepancies, we provide standardized, real-time manual quotes. All pricing is transparent with no hidden costs; quotes can be provided on either a tax-inclusive or tax-exclusive basis, and special VAT invoices can be issued upon request.

A:

Our company has no strict minimum order quantity requirements and supports various procurement models, including small-scale purchases, bulk stocking, and full-order supply for engineering projects. We can handle orders ranging from small top-up supplies for construction sites and ad-hoc store purchases to bulk procurement for large-scale projects, flexibly meeting the diverse needs of our customers.

A:

We support monthly settlement and deferred payment terms for high-quality project clients and long-term partner distributors. Long-term partners enjoy exclusive pricing, as well as priority in order scheduling and shipment; please contact your account manager to discuss specific partnership policies.

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