Manis Steel Co., Ltd.
Import and Export Seamless & Steel Pipes.
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Tons of Seamless Pipes Traded
Successful Projects Completed
Satisfied Clients Worldwide
Seamless Pipe Models Supplied
Seamless Pipe
Our company specializes in importing and supplying a wide range of seamless (Mannesmann) pipes from top global brands, including Chinese, German, Romanian, and other leading steel industry manufacturers. We offer these pipes in various schedules (20, 40, 80, 120, and 160) and sizes (from 1/2 inch to 12 inches and above), compliant with international standards such as ASTM A106, ASTM A53, and API 5L. Our imported seamless pipes, known for their integral structure, high resistance to pressure and corrosion, and protective coatings like lacquer to prevent rust, are ideal for critical industries including oil and gas, petrochemical, firefighting, hydraulics, and food processing. Contact us for up-to-date pricing and expert consultation.
API 5L Seamless Line Pipes (Grade B, X42, X52, X60, X70)
API 5L seamless line pipes, engineered for oil and gas pipelines, offering superior strength and reliability for high-pressure applications.
Standard: API 5L (American Petroleum Institute)
Grades: Grade B, X42, X52, X60, X70
Sizes: 1/2” to 48” (Nominal Bore)
Schedule: 20, 30, 40, STD, 80, 100, 120, 160, XXS
Length: 6m, 12m, custom lengths (SRL, DRL)
Applications: Oil and gas pipelines, transportation of crude oil, natural gas, and refined products in projects such as South Pars and Iranian oilfields.
Features: High strength, corrosion resistance, suitable for high-pressure and sour service environments.
ASTM A106 Seamless Carbon Steel Pipes (Grade B, C)
ASTM A106 seamless pipes, designed for high-temperature environments, ideal for refineries and petrochemical industries.
Standard: ASTM A106
Grades: Grade B, Grade C
Sizes: 1/8” to 30” (Nominal Bore)
Schedule: Sch 40, 80, 160, XXS
Length: 7m (SRL), 10-12m (DRL), or custom
Applications: High-temperature and high-pressure applications in refineries, petrochemical plants, and power plants.
Features: Excellent heat resistance, seamless construction for durability, suitable for bending and flanging.
ASTM A53 Seamless Carbon Steel Pipes (Grade A, B)
ASTM A53 seamless pipes, perfect for low-pressure fluid transport and structural applications in construction and utilities.
Standard: ASTM A53
Grades: Grade A, Grade B
Sizes: 1/8” to 26” (Nominal Bore)
Schedule: Sch 10, 20, 40, STD, 80, 160
Length: 6m, 12m, or custom
Applications: Low-pressure fluid transport (water, gas), structural applications in construction, and mechanical systems.
Features: Cost-effective, versatile, available with black or galvanized coating.
ASTM A333 Seamless Low-Temperature Carbon Steel Pipes (Grade 6)
ASTM A333 seamless pipes, built for low-temperature applications, ensuring durability in LNG and cryogenic systems.
Standard: ASTM A333
Grade: Grade 6
Sizes: 1/4” to 24” (Nominal Bore)
Schedule: Sch 40, 80, 100, 120, 160
Length: 6m, 12m, or custom
Applications: Low-temperature applications in LNG plants, cryogenic systems, and cold-climate pipelines.
Features: High toughness at low temperatures, seamless for reliability.
DIN 2448 Seamless Carbon Steel Pipes
DIN 2448 seamless pipes, crafted for precision engineering and pressure vessel applications in industrial systems.
Standard: DIN 2448 (European standard, equivalent to EN 10216-1)
Grades: St 37.0, St 44.0, St 52.0
Sizes: 1/2” to 24” (Nominal Bore)
Schedule: 2mm to 50mm (or Sch 40 to XXS)
Length: 6m, 12m, or custom
Applications: General engineering, pressure vessels, industrial piping systems, petrochemical plants, and power generation.
Features: High precision, suitable for mechanical and structural applications.
GB3087 Seamless Carbon Steel Boiler Pipes
GB3087 seamless boiler pipes, designed for low and medium-pressure boilers, ensuring reliability in power plants.
Standard: GB3087 (Chinese standard)
Grade: 20# (equivalent to ASTM A106 Gr.B)
Sizes: 1/2” to 12” (Nominal Bore)
Thickness: 2mm to 60mm
Length: 6m, 12m, or custom
Applications: Low and medium-pressure boiler systems, power plants, and heating systems.
Features: Heat-resistant, seamless for high-pressure boiler applications.
GB9948 Seamless Carbon Steel Pipes for Petroleum Cracking
GB9948 seamless pipes, optimized for petroleum cracking and chemical processing in high-temperature environments.
Standard: GB9948
Grade: 20#
Sizes: 1/2” to 10” (Nominal Bore)
Thickness: 2mm to 40mm
Length: 6m, 12m, or custom
Applications: Petroleum cracking, chemical processing, high-temperature refining, gas transmission, and boiler systems.
Features: Resistant to high temperatures and chemical corrosion.
ASTM A179 Seamless Carbon Steel Heat Exchanger Tubes
ASTM A179 seamless tubes, ideal for heat exchangers and condensers in power and petrochemical applications
Standard: ASTM A179
Grade: Low-carbon steel
Sizes: 1/8” to 3” (Nominal Bore)
Thickness: 1.2mm to 8mm
Length: 6m, 12m, or custom
Applications: Heat exchangers, condensers, and boiler tubes in power plants and petrochemical industries.
Features: High thermal conductivity, seamless for efficient heat transfer.
ASTM A192 Seamless Carbon Steel Boiler Tubes
ASTM A192 seamless boiler tubes, engineered for high-pressure boilers and superheaters in power generation.
Standard: ASTM A192
Grade: High-pressure carbon steel
Sizes: 1/2” to 7” (NB)
Thickness: 2mm to 12mm
Length: 6m, 12m, or custom
Applications: High-pressure boiler systems, superheaters, power generation, nuclear reactors, and steam pipelines.
Features: High-pressure resistance, seamless for safety in critical applications.
Custom Carbon Steel Seamless Pipes
Custom seamless carbon steel pipes, tailored to your specifications for oil, gas, and industrial applications.
Standard: Based on client specifications (e.g., ASTM, API, GB, or DIN)
Grades: Q235, Q195, 20#, or custom
Sizes: 1/2” to 120” (Nominal Bore, custom)
Thickness: 2mm to 100mm (custom)
Length: Custom lengths
Applications: Tailored for specific needs in oil, gas, construction, industrial projects, water treatment, and structural engineering.
Features: Custom sizes, grades, and coatings (e.g., epoxy, galvanized).
History of Manis Steel
Founded in 2018, Manis Steel is a leading supplier of seamless carbon steel pipes, serving industries across Iran and beyond. With over 4000 tons traded in 12 countries, we deliver 90+ pipe models compliant with API 5L, ASTM A106, and GB standards. Our 50+ satisfied clients and 200+ successful projects reflect our commitment to quality, reliability, and on-time delivery. Partnering with top manufacturers, we offer competitive pricing and customized solutions for oil, gas, petrochemical, and construction sectors. At Manis Steel, our mission is to empower your projects with premium seamless pipes backed by expertise and trust.
Contact us today to source high-quality pipes for your next project.
Transactions Completed
Standards Compliance
Years of Excellence
Countries Reached
Premium Quality: Seamless pipes meeting API 5L, ASTM standards.
Global Network: Sourcing from Iran and China, serving 12+ countries.
Timely Delivery: 99% on-time delivery for your projects.
Custom Solutions: 90+ pipe models for industrial needs.
Contact Us
Connect with Manis Steel, a leader in seamless pipe supply. We’re ready to answer your questions, provide expert consultation, and meet your project needs. Reach out via phone, email, or our contact form to experience working with a professional team with over 7 years of expertise serving the oil, gas, and construction industries in Iran and 12+ countries. Contact us today!
21, Block 2, Paeezan, Shad Abad, Tehran, Iran
Manis Steel Pipes
