Carbon steel pipe suppliers

Carbon steel pipes are a type of steel pipe made by alloying carbon and iron in a certain proportion. Due to their excellent mechanical properties, durability and cost-effectiveness, they have become an important choice for pipe materials in many industries. As a professional supplier of carbon Steel pipes, Central Steel, with its advanced production technology and perfect quality management system, provides customers with carbon steel pipe products of various specifications and processes to meet the needs of different projects and application scenarios.

What is carbon steel pipe?

Carbon Steel Pipe refers to a round, square or rectangular steel pipe processed from carbon steel through techniques such as hot rolling, cold drawing or welding. Its main components include iron (Fe) and carbon (C). By regulating the carbon content, carbon steel pipes exhibit different combinations of strength and plasticity and toughness.

Classification of carbon content

Low-carbon steel (carbon content <0.25%) : It has good plasticity and formability and is suitable for general structural pipes.
Medium carbon steel (carbon content 0.25% - 0.60%) : It has a relatively high tensile strength and is often used to manufacture components that are subjected to significant stress.
High-carbon steel (carbon content >0.60%) : It has outstanding hardness and wear resistance, making it suitable for manufacturing high-strength or wear-resistant parts.

Process classification

Seamless carbon steel pipe: After heating round steel billets, it is formed by piercing, drawing or extrusion, without welds, and the internal structure is more uniform. It is suitable for transportation under high pressure and high temperature conditions.

Welded carbon steel pipe (CS ERW/LSAW) : It is made by welding steel plates or steel strips after forming. Common welding processes include resistance welding (ERW), straight seam submerged arc welding (LSAW), and spiral welding (SSAW), etc. Welded pipes have relatively low costs and are suitable for general transportation and structural purposes.

Standards and specifications of carbon steel pipes

The products of Central Steel are manufactured strictly in accordance with well-known domestic and foreign standards. Common carbon steel pipe standards include:

ASTM Series

ASTM A106: Seamless carbon steel pipes suitable for high-temperature services, often used in oil and gas transportation systems;
ASTM A53: Seamless and welded carbon steel tubes suitable for fluid transportation and structural applications;
ASTM A671/A672: Applicable to seamless and welded carbon steel pipes for chemical and general purposes at low or normal temperatures.

ASME/ANSI

ASME B36.10M: Standards for dimensions and wall thickness of seamless and welded carbon steel pipes;
ASME B36.19M: Dimensions of stainless steel and nickel alloy tubes, but its standard format is also often analogized for the specification of carbon steel tubes.

API Series

API 5L: Standard for pipeline steel pipes for transporting oil and natural gas, including different grades such as X42, X52, X60, X65, and X70;

Common dimensions and wall thicknesses

Nominal Pipe Size (NPS) : From 1/2 "to 36" (DN15 - DN900)

Wall thickness series (Schedule) : SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, etc

Customized wall thickness: The outer diameter and wall thickness can be customized according to customer requirements, such as 7.00mm to 50.00mm or even wider ranges

Length forms: Single Random, Double Random and Custom Cut-to-Length, with a maximum length of up to 12 meters

Common forms and shapes

Round Pipe
Square Pipe/Rectangular Pipe
Youdaoplaceholder0 Tube/U-Bend Tubing
Hydraulic Tubing
Special-shaped pipes: such as elliptical, special elbows or flange connection ends, etc

Common grades of carbon steel pipes

ASTM A53 Gr B
ASTM A106 Gr B/C
ASTM A671 Grade CC60/CC65/CC70
API 5L X52, X60, X65

Application fields of carbon steel pipes

Carbon steel pipes, with their outstanding strength and pressure resistance, are widely used in multiple industries. The following are some typical scenarios:

Oil and gas exploration and transportation

ASTM A106 seamless carbon steel pipe: Used for high-temperature and high-pressure oil and gas pipeline transportation;
API 5L coalbed methane pipeline steel pipe: Meeting the requirements of long-distance and high-pressure pipelines.

Chemical and petrochemical Industry

High-temperature reaction vessel connection pipelines, steam conveying pipelines, multiphase flow conveying, etc.
ASTM A53/ASTM A672: Commonly used materials for chemical equipment and conveying pipelines.

Electric power and thermal power plant

Boiler feed water pipes, superheated steam pipes, condensate return pipes, etc., need to withstand high-temperature and high-pressure loads.

Mechanical manufacturing and structural support

Seamless round tubes and structural steel tubes (square tubes, rectangular tubes) for mechanical parts processing are used to support frames and stair railings, etc.

Why choose Central Steel as the supplier of carbon steel pipes?

As an enterprise specializing in the research and development, production and sales of carbon Steel pipes, Central Steel is committed to providing high-performance and highly reliable carbon steel pipe products for global customers. Our core advantages include:

Advanced production techniques and equipment

It is equipped with the world's leading full-process production facilities for seamless tube rolling, hot expansion rolling, cold drawing, cold rolling, etc.
Multiple ERW (Resistance Welding) and LSAW (Straight Seam Submerged Arc welding) production lines can meet the demands of large specifications and high production capacity.

Strict quality control system

Implement management systems such as ISO9001 throughout the process;
Key processes are equipped with online non-destructive testing (UT, RT, PT) to ensure that each pipe meets the design strength and is defect-free.
We provide third-party test reports (such as BV, SGS, TUV, etc.), and customers can choose any quality inspection institution to witness the inspection.

Diversified product portfolio

Seamless carbon steel pipes: covering service grades from small diameter to large diameter, thin-walled to thick-walled, and from normal temperature to high temperature.
Welded pipe series: ERW carbon steel pipe, LSAW straight seam submerged arc welded pipe, SSAW spiral welded pipe;
Special steel grades: including high-strength pipeline steel (API 5L X52 ~ X70), high-pressure boiler tubes (ASTM A106 B/C), seamless tubes for chemical industry (ASTM A672 CC60/CC65/CC70), etc.

Flexible customization and all-round services

The outer diameter, wall thickness, length and end form (flat end, inclined end, threaded end, flange connection, etc.) can be customized according to the customer's drawings or actual working conditions.
Provide secondary processing services such as cutting, drilling, threading, heat treatment, pickling and phosphating, and painting;
A professional technical team can provide pipeline design suggestions, process optimization support and on-site technical guidance based on project requirements.

Rich inventory and fast delivery

A global warehousing network, with regular inventories at multiple major ports and distribution centers, enables regular-sized pipes to be dispatched within 7 to 10 days.
For project-based large-scale demands, we provide dedicated inventory reservation and in-transit tracking services to ensure timely and uninterrupted supply.

Sustainable development and environmental protection commitment

Raw material procurement selects high-quality steel mills at home and abroad, strictly controls environmental emissions, and reduces energy consumption and carbon footprint during the production process.
Waste materials and scraps are recycled and reused to achieve a circular economy.
We adopt coatings and packaging that comply with environmental protection requirements such as RoHS and REACH to help customers create green projects.

Central Steel, with its leading production equipment, perfect quality control, rich product line and professional technical services, provides you with an integrated solution from material selection to later maintenance. Whether it is conventional seamless carbon Steel pipes, ERW resistance welded pipes, or straight seam/spiral welded pipes, Central Steel can tailor the most suitable carbon steel pipe products according to the project requirements.