About Us
Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
News
In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
Services
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Facility
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
Available Standards: ASTM A53 • ASTM A106 • API 5L
Available Grades: ASTM A53 Gr.A / Gr.B • ASTM A106 Gr.B • API 5L Gr.B • X42–X70
Size Range: OD 21.3–914.4 mm │ WT 2.11–60 mm
Schedules: SCH10 • SCH20 • SCH40 • SCH80 • SCH160 • XXS
Supply Options
OEM Available • Custom Length • Global Export
Eastern Steel supplies seamless carbon steel pipes for pressure piping, oil and gas, petrochemical, power, and industrial applications. Products are available in ASTM A53, ASTM A106, and API 5L grades and can be supplied to project specifications.
Carbon steel seamless pipes are available in multiple international standards and steel grades for pressure piping, pipeline transportation, structural engineering, and industrial applications.
| Item | Specification |
|---|---|
| Product Type | Carbon Steel Seamless Pipe |
| Manufacturing Process | Hot Rolled / Cold Drawn Seamless |
| Material | Carbon Steel |
| Standards | ASTM A53 • ASTM A106 • API 5L |
| Typical Grades |
ASTM A53 Gr.A / Gr.B ASTM A106 Gr.B API 5L Gr.B, X42, X52, X60, X65, X70 |
| Outside Diameter | 21.3–914.4 mm |
| Wall Thickness | 2.11–60 mm |
| Pipe Schedule | SCH10 • SCH20 • SCH40 • STD • XS • SCH80 • SCH100 • SCH120 • SCH160 • XXS |
| Standard Length | 5.8 m • 6 m • 11.8 m • 12 m • Custom |
| Pipe Ends | Plain End • Beveled End • Threaded |
For complete dimensions, schedules, wall thicknesses, and weight information, please refer to our Seamless Pipe Size Chart & Specifications Guide.
Carbon steel seamless pipe combines the structural advantages of seamless manufacturing with the practicality and cost efficiency of carbon steel, making it one of the most widely used pipe materials for pressure piping and industrial systems.
Manufactured from solid steel billets without a longitudinal weld seam, providing consistent wall structure and reliable pressure performance.
Carbon steel seamless pipes are commonly used in pressure piping, steam lines, oil and gas, and other demanding industrial systems.
Available in ASTM A53, ASTM A106, API 5L and corresponding carbon steel grades for different piping and pipeline requirements.
Hot rolled and cold drawn seamless pipes are available according to required dimensions, surface condition, and application.
Custom lengths, pipe ends, marking, packaging, and inspection requirements can be arranged for project orders.
Carbon steel seamless pipes are widely used in industries requiring high pressure resistance, elevated temperature performance, and reliable mechanical strength.
| Industry | Common Standard | Typical Applications |
|---|---|---|
| Oil & Gas Transmission | API 5L | Oil pipelines, natural gas pipelines, gathering systems |
| Petrochemical Processing | ASTM A106 | Process piping, refinery piping, chemical plants |
| Power Generation | ASTM A106 | Steam pipelines, power plant piping |
| Boiler Systems | ASTM A106 | High-temperature boiler piping |
| Structural Engineering | ASTM A53 | Heavy structural supports and industrial frameworks |
| Mechanical Equipment | ASTM A53 | Machinery, pressure equipment, industrial fabrication |
| General Industrial Piping | ASTM A53 / ASTM A106 | High-pressure fluid transportation and industrial process systems |
Eastern Steel supplies carbon steel seamless pipes for EPC contractors, distributors, and industrial projects worldwide, providing stable manufacturing capability and flexible supply solutions.
✓ Outside Diameter up to 914.4 mm
Supports small- and large-diameter seamless pipes for industrial, structural, and pipeline applications.
✓ Wall Thickness up to 60 mm
Suitable for standard pressure service as well as heavy-wall applications.
✓ Hot Rolled & Cold Drawn Manufacturing
Production processes available to meet different dimensional accuracy and mechanical property requirements.
✓ ASTM & API Standard Manufacturing
Manufactured according to ASTM A53, ASTM A106, and API 5L specifications.
✓ OEM & Project-Based Supply
Custom pipe length, schedule, end finish, marking, and packaging are available according to project requirements.
✓ Third-Party Inspection Available
SGS, BV, TUV, and other independent inspections can be arranged upon request.
✓ Mill Test Certificate (MTC) Provided
Material traceability and inspection records are supplied in accordance with project specifications.
✓ Worldwide Export Experience
Serving distributors, EPC contractors, and industrial customers across oil & gas, construction, infrastructure, power generation, and manufacturing industries.
Q1. What standards are available for carbon steel seamless pipe?
We supply carbon steel seamless pipe to ASTM A53, ASTM A106, and API 5L requirements, with project-specific specifications available upon request.
Q2. What sizes of carbon steel seamless pipe do you supply?
We supply seamless carbon steel pipe in OD 21.3–914.4 mm and wall thicknesses from 2.11–60 mm, with custom sizes available for project requirements.
Q3. Can you supply carbon steel seamless pipe to API 5L requirements?
Yes. API 5L seamless pipe is available in grades including Gr.B and X42–X70, subject to project specifications.
Q4. Can you supply custom lengths and pipe ends?
Yes. We can supply standard or custom lengths with plain, beveled, or threaded ends according to project requirements.
Q5. Can you supply OEM or project-specific seamless carbon steel pipe?
Yes. OEM and project-based supply are available, including custom dimensions, schedules, lengths, ends, marking, and packaging.
Q6. What inspection documents are available?
MTC, hydrostatic testing, UT, and third-party inspection reports can be provided according to project requirements.
Seamless Carbon Steel Pipe Selection Guide
Selection of Seamless Carbon Steel Pipes Under Different Conditions
Models and Specifications of Seamless Carbon Steel Pipe
ASTM vs API vs EN Standards for Seamless Carbon Steel Pipes
Carbon Steel Pipe Material Grade
Carbon Steel Pipe Schedule Chart
Seamless Carbon Steel Pipe vs Seam Carbon Steel Pipe
Carbon Steel Pipe Used in Oil & Gas
E-mail: sales@eastern-steels.com
