PRODUCTS

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.
Phone :+86 199 6355 0024
WhatsApp : +86 199 6355 0024
Email : david@sdxyy.cn
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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 weldabilityAISI 304, ASTM A815, AISI 316L
Medium-carbon steel0.25 – 0.60MartensiteLow hardenability, medium strength, ductility and toughnessAISI 409, ASTM A29, SCM435
High-carbon steel0.60 – 1.25PearliteHigh hardness, strength, low ductilityAISI 440C, EN 10088-3


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,ASME, 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





PRODUCT DISPLAY
Carbon Steel Pipe
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Carbon Steel Pipe

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Carbon Steel Pipe


FACTORY DISPLAY
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FAQ
Q: Are you a factory or a trading company?
A:

Shandong Xinyongyuan Iron & Steel Group Co., Ltd. is a professional foreign trade and supply chain service company specializing in steel products. Leveraging the extensive industrial resources of the "Xinyongyuan " group, we have deeply integrated the production capacities of major domestic steel mills (such as Xinyongyuan, Baowu, HBIS, Ansteel, etc.). We possess stable supply channels and a professional foreign trade team. We are able to provide customers with one-stop steel procurement solutions—covering a wide variety of products and standards—at prices comparable to direct factory supply, combined with exceptional service flexibility.

Q: What products does your company primarily export?
A:

Our product portfolio spans the construction, machinery, energy, and infrastructure sectors. Our main offerings include: Plates & Sheets (Hot-rolled coils, Cold-rolled coils, Medium & Heavy plates, Galvanized sheets, Color-coated sheets); Structural Steel (H-beams, I-beams, Channel steel, Angle steel, Steel sheet piles); Steel Pipes (Seamless pipes, Straight-seam welded pipes, Spiral welded pipes, Galvanized pipes, Square & Rectangular tubes); and Construction Steel (Rebars, Wire rods, Round bars).

Q: What advantages does your company possess in Liaocheng, Shandong?
A:

Located in Liaocheng City, Shandong Province, our company is situated in close proximity to major steel production hubs such as Jinan and Handan, giving us access to abundant upstream resources. Furthermore, we are located within a short-haul transport radius of both Qingdao Port and Rizhao Port. This ensures convenient logistics and low port-consolidation costs, enabling us to efficiently connect with the global maritime shipping network and provide customers with guaranteed rapid delivery.

Q: Which international standards can you supply?
A:

We can produce or supply products in accordance with various international standards, including Chinese National Standards (GB), American Standards (ASTM), Japanese Standards (JIS), European Standards (EN), British Standards (BS), and Australian Standards (AS). Additionally, upon customer request, we can arrange third-party inspections through agencies such as SGS, BV, or Intertek.

Q: What is the Minimum Order Quantity (MOQ)?
A:

The Minimum Order Quantity varies depending on the specific product:
Standard Specifications (e.g., Q235B H-beams, Hot-rolled coils): Orders can be placed starting from one 20-foot container (approximately 20–25 tons).
Special Materials or Custom Sizes: We are open to accommodating small-batch trial orders; please consult with our sales representatives for details. Coiled products are typically shipped in full rolls (individual rolls weighing 15–30 tons); the minimum order quantity is one roll.

Q: What payment methods do you accept?
A:

We support a variety of international trade payment methods. Common combinations include:
30% T/T deposit + 70% balance paid prior to shipment
30% T/T deposit + 70% balance paid upon presentation of a copy of the Bill of Lading
100% Letter of Credit (L/C) at sight
For long-term partners and established clients, more flexible terms may be negotiated.

Q: What is the typical lead time?
A:

In-stock products: Shipped within 7–15 days after receipt of the deposit
Mill-scheduled orders: Generally 20–35 days (depending on the specific product and the steel mill's production schedule)
Large-volume orders (over 5,000 tons): 30–45 days; the specific delivery date must be confirmed with the steel mill

Q: How do you ensure product quality?
A:

We implement a three-tiered quality control system: First, all goods are sourced from reputable, large-scale steel mills and are accompanied by original Mill Test Certificates (MTCs); second, prior to shipment, our quality inspectors conduct on-site spot checks to verify dimensions, surface finish, weight, and other parameters; third, upon client request, we can commission third-party agencies—such as SGS or BV—to perform a comprehensive pre-shipment inspection. Should any material discrepancies or severe quality issues arise due to our fault, we will assume full responsibility for returns, replacements, or negotiated compensation.

Q: Can you provide samples?
A:

Yes. For standard in-stock products, we can provide small-sized samples (approximately 10–20 cm in length) free of charge; customers are only required to cover the international shipping costs. For custom samples produced according to specific drawings, material and processing fees apply; however, these fees are refundable upon the placement of a formal order.

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