Seamless Steel Pipes Produced to Your Project Requirements
HYT supplies seamless carbon steel, stainless steel and alloy steel pipes for overseas B2B buyers who need specification-based procurement. We support inquiries based on material grade, outer diameter, wall thickness, length, standard, application, inspection documents and export delivery requirements. Whether your project requires standard seamless pipes or custom dimensions, our team can help check the requirements and provide a quotation based on your technical parameters.
Frequently Supplied Seamless Steel Pipe Types
HYT supplies a variety of seamless steel pipes to provide targeted solutions for different industry challenges.

HYT’s seamless steel pipes provide reliable solutions for fluid and gas transportation.

HYT’s Seamless steel structural tube has excellent strength and load-bearing capacity.

HYT’s Seamless steel mechanical tube provides high dimensional accuracy and excellent processing performance.

HYT’s Seamless steel boiler tube is a piping solution designed for high temperature and high pressure environments.

HYT’s Seamless steel tubing provides reliable strength and performance in multiple industrial applications.

HYT’s seamless steel heat exchanger tube has excellent heat transfer efficiency and corrosion resistance.

HYT’s Seamless steel automotive tube provides lightweight and high-strength solutions for automotive manufacturing.

HYT’s Seamless steel precision tube has high dimensional accuracy and smooth internal and external surfaces.
Frequently Supplied Seamless Steel Pipe Material Types
HYT supplies a wide range of seamless steel pipes made from various materials, including carbon steel, stainless steel, and alloy steel.
HYT’s seamless carbon steel pipes offer superior strength and pressure-resistance, which is ideal for construction and manufacturing.
HYT’s seamless alloy steel pipes enhance performance under high temperature and pressure by incorporating alloying elements.
HYT’s seamless stainless steel pipes offer excellent corrosion resistance and strength, making them ideal for use in chemical, food processing, and medical industries.
HYT’s seamless low carbon mild steel pipes offer excellent weldability and flexibility, ideal for general construction and light industrial use.
Frequently Supplied Seamless Stainless Steel Pipe Grades & Standards
The following are the seamless stainless steel pipe material grades that HYT can supply, which are in compliance with major international standards such as ASTM, DIN, EN, GOST, etc.

ASTM A511 MT 304 304L 309S 310S 316 316L 321
HYT’s ASTM A511 seamless stainless steel mechanical tubes can maintain strength in corrosive environments and high temperatures.

ASTM A213/SA213 Gr. 304/304l/304h/316/316l/321
t2/t5/t9/t11/t12/t22/t91
HYT’s ASTM A213 seamless alloy steel pipe is specially used for the production of boiler, superheater, and heat-exchanger tubes

ASTM A269 TP 304 316 316l S31254
HYT’s ASTM A269 seamless stainless steel pipe has excellent performance such as corrosion resistance, low temperature resistance and high temperature resistance.

ASTM A312 TP 304 304l 304h 310 316 316l
317L 321 321h 347 347h UNS s31254
HYT’s ASTM A312 seamless stainless steel pipes have good high temperature resistance and corrosion resistance.

ASTM A789 S31803
HYT ASTM A789 seamless stainless steel tubes have good resistance to stress corrosion cracking.

The corrosion resistance of HYT’s 410 stainless steel seamless pipe is inferior to that of 300 series stainless steel, but it has excellent processability and toughness.

HYT’s 17-4Ph Stainless Steel seamless steel pipe has excellent corrosion resistance and can be used in oilfield valve parts, chemical process equipment, aircraft accessories, etc.

ASTM A790 UNS S31803 S32205 S32750 S32760
HYT ASTM A790 seamless stainless steel tubes have excellent corrosion resistance and can ensure the safety and stability of the project.
Frequently Supplied Seamless Carbon Steel Pipe Grades & Standards
The following are the seamless carbon steel pipe material grades that HYT can supply, which are in compliance with major international standards such as ASTM, DIN, EN, GOST, etc.

HYT’s A179 cold-drawn seamless low-carbon steel pipe is specifically used to manufacture heat-exchanger and condenser tubes.

HYT’s ASTM A192 seamless carbon steel pipe can be used to produce boiler tubes in high-pressure environments.

ASTM A53 Gr. A/B
HYT Supports ASTM A53 seamless carbon steel pipe in NPS 1/8 to NPS 26.

ASTM A106 Gr. A/B/C
HYT’s ASTM A106 Seamless Carbon Steel Pipe is a solution specifically for High-Temperature Service.

HYT’s 1026 seamless carbon steel pipe has higher mechanical properties and strength, lower tolerances, and can be cut to the length you need.

HYT’s SAE J-524 low carbon seamless steel tubing has good ductility and a smooth and clean surface, and is a perfect solution for hydraulic lines.

ASTM A333 Gr. 1/3/6
HYT’s ASTM A333 seamless carbon steel and alloy steel pipes are suitable for extreme low temperature applications.

HYT’s aisi 1018 cold drawn seamless carbon steel tube is easy to form and convenient for subsequent secondary processing, and is often used in racing car manufacturing.

HYT’s DIN 2391 st32 precision carbon steel tubes have high dimensional accuracy and close tolerances, suitable for precision applications.

HYT’s DIN 2391 ST52 carbon steel precision tube is produced by precision cold drawing process and has high strength and surface quality.

ASTM A500 Gr. A/B/C/D
HYT’s ASTM A500 carbon steel seamless pipes support round, square, rectangular or special shapes, which are solutions for structural applications.
Frequently Supplied Seamless Alloy Steel Pipe Grades & Standards
The following are the seamless alloy steel pipe material grades that HYT can supply, which are in compliance with major international standards such as ASTM, DIN, EN, GOST, etc.

ASTM A335 P1/P5/P9/P11/P12/P22/P91/P92
HYT’s ASTM A335 seamless alloy steel pipes are suitable for high temperature applications.

ASTM A519 Gr. 4130/4140
HYT’s ASTM A519 seamless chromoly mechanical tubes can be produced by hot rolling, cold rolling, cold drawing and other processes, with good strength and mechanical properties.
Seamless Steel Pipe Types by Manufacturing Process
HYT provides a variety of seamless steel pipe production processes such as hot rolling, cold rolling, cold drawing, extrusion, honing, etc. For precision steel pipes, we use precision cold drawing and precision cold rolling processes to achieve smaller dimensional tolerances.

Hot rolled seamless steel pipes offer excellent plasticity and toughness, making them suitable for structural large diameter pipe, meeting the demands of various heavy-duty applications.

Cold rolled seamless steel pipes offer enhanced dimensional accuracy and surface finish, making them perfect for precision machinery and industrial equipment.

Cold drawn seamless steel pipes excel in small diameters and thick walls, widely used in automotive and mechanical application, offering excellent strength and surface quality.

Seamless steel DOM pipes offer excellent precision and surface finish, which is ideal for automotive and structural applications. Their strength and uniformity ensure reliable performance.
Available Seamless Steel Pipe Cross-Section Types
HYT provides seamless steel pipes available in a variety of cross-sections, including round, square, rectangular, oval and special shapes.

HYT’s seamless round pipes are made of a variety of high-quality materials and are suitable for long-term and stable oil and gas transportation applications.

Our seamless steel rectangular tubes provide flexible structural solutions, suitable for use in construction, furniture, and automotive industries, with outstanding load-bearing capacity.

HYT’s seamless square steel pipes feature uniform cross-sections and robust structures, widely used in various industrial and construction projects, ensuring reliable performance.

Seamless steel oval tubes provide unique design flexibility and strength, ideal for furniture, automotive, and construction. Their seamless construction ensures reliable performance.

HYT’s seamless hexagonal tube has high dimensional accuracy and a stable hexagonal structure, and can be customized on demand.

HYT’s seamless triangular tube has good torsion and compression resistance and long-term structural stability.

Seamless octagonal tube has excellent properties such as high pressure resistance and impact resistance, and is suitable for building support, safety guardrails, etc.

Special shape seamless steel pipes can be customized according to client needs, suitable for unique engineering designs and applications, offering greater flexibility and adaptability.
Why Choose HYT Seamless Steel Pipe

Seamless structure ensures the safety and reliability of pipelines in high-pressure applications, significantly reducing project risks.

Excellent corrosion resistance significantly extends the service life of pipelines and reduces maintenance costs.

High dimensional accuracy and small tolerances ensure that seamless steel pipes can perfectly match the final product structure.

Excellent formability can reduce the difficulty and cost of subsequent secondary processing.
Excellent Pressure Bearing Capacity
HYT’s seamless steel pipe has high overall strength and pressure bearing capacity, which means it has excellent performance in high temperature and high pressure conditions.


High Fluid Delivery Efficiency
HYT’s seamless steel pipe has a smooth inner wall without defects, which greatly reduces the friction resistance during fluid delivery and improves the fluid delivery efficiency.
Diversified Applications
HYT’s seamless steel pipe has excellent corrosion resistance and high temperature and high pressure resistance, so it can be used in many key industries such as oil and gas transportation, boiler manufacturing, and mechanical structures.


Longer Service Life
HYT’s seamless steel pipe uses high-quality corrosion-resistant materials and can resist various environmental corrosion, so it has a longer service life than welded steel pipes.
Why Choose HYT

HYT purchases raw materials from strictly selected and reputable raw material suppliers and implements a strict incoming inspection process. This ensures that our seamless steel pipes have excellent performance, higher durability and longer service life from the source.

Every project is unique, so we are committed to providing you with customized solutions. HYT has strong customization capabilities for seamless steel pipes, and we provide you with a variety of customization options covering size, material, surface treatment, etc.

Our company has passed the ISO 9001 international quality management system certification, and has obtained product performance certification from international authoritative third-party organizations on multiple products. These certifications are a strong proof of our company’s strength and product performance, and we are confident that we can help you meet the current challenges.

HYT has strong supply capabilities. HYT has a large inventory of conventional seamless steel pipes, so it can be shipped quickly. We also support expedited production for your urgent orders to help you start your project quickly.

HYT has strong production capabilities. HYT factory has more than 50 seamless steel pipe production lines, covering cold drawing, cold rolling, hot rolling and other processes, with an annual seamless steel pipe output of about 10,000 tons.

From initial consultation and technical consultation to order processing, logistics support and after-sales assistance, HYT’s sales and technical support team can provide you with professional services. We look forward to establishing a lasting and mutually beneficial partnership with you.
HYT Seamless Steel Pipe for Diverse Application

HYT’s seamless steel pipes are ideal for heat exchanger tubes due to their excellent thermal conductivity and corrosion resistance. Our high-quality materials ensure reliable performance in demanding thermal environments, maximizing efficiency and longevity in heat exchange applications.

Our seamless steel pipes are perfectly suited for condenser tubes, providing superior strength and durability under high pressure. With precise dimensions and a smooth surface finish, HYT’s pipes enhance heat transfer efficiency, ensuring optimal performance in cooling systems.

HYT’s seamless mechanical pipes are designed for high-stress applications, offering exceptional mechanical properties and dimensional accuracy. Our advanced manufacturing processes ensure consistency and reliability, making them ideal for use in machinery and structural components across various industries.

HYT’s seamless structural pipes provide outstanding strength and flexibility, making them ideal for construction and engineering applications. With high resistance to bending and deformation, our pipes meet rigorous safety standards, ensuring dependable performance in a variety of structural projects.

HYT’s seamless pipes can be used to produce hydraulic pipes for high-pressure fluid transmission, which have excellent strength, precision, surface quality and durability. Our seamless pipes can ensure that the pipeline can transmit liquids for a long time, stably and efficiently, and improve the operation efficiency of the project.
Specification
- Diverse Outer Diameter
- Diverse Wall Thickness
- Size Range and Tolerance
- Common Sections
HYT Seamless Steel Pipe Size Range:
Nominal Pipe Size (NPS): ½” to 60”
Outer Diameter (O.D.): 1/8” to 60” (10.3mm to 1500mm)
Small Outer Diamter Seamless Steel Pipe
Large Outer Diameter Seamless Steel Pipe
HYT Seamless Steel Pipe Wall Thickness Range:
Schedules: SCH10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS
Thickness Range: 2.11mm to 50.01mm (0.083” to 2”)
Thick Wall Seamless Steel Pipe
Thin Wall Seamless Steel Pipe
Size Range
| Size Range | Round Pipe/Tube |
| WT: 1mm-150mm(SCH10-XXS) | |
| OD: 6mm-2500mm (3/8″-100″) | |
| Square Pipe/Tube | |
| WT: 1mm-150mm(SCH10-XXS) | |
| OD: 4mm*4mm-800mm*800mm | |
| Rectangular Pipe/Tube | |
| WT: 1mm-150mm(SCH10-XXS) | |
| OD: 6mm-2500mm (3/8″-100″) | |
| Length | 4000mm,5800mm,6000mm,12000mm,or as required. |
Tolerance
| Pipe Types | Pipe sizes(mm) | Tolerances |
| Hot Rolled | OD<50 | ±0.50mm |
| OD≥50 | ±1% | |
| WT<4 | ±12.5% | |
| WT 4~20 | +15%, -12.5% | |
| WT>20 | ±12.5% | |
| Cold Drawn | OD 6~10 | ±0.20mm |
| OD 10~30 | ±0.40mm | |
| OD 30~50 | ±0.45 | |
| OD>50 | ±1% | |
| WT≤1 | ±0.15mm | |
| WT 1~3 | +15%, -10% | |
| WT >3 | +12.5%, -10% |

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Contact HYT Metals for Premium Seamless Steel Pipe Today
At HYT Metals, Our factory produces and supplies various kinds of seamless steel pipe in various sizes, shapes, steel grades, processing methods, delivery in heat-treated condition to meet tough requirements in some serious and complex projects. Our large volume inventory guarantees high quality product, fast shipping and fast delivery for standard steel pipes.
No matter what kinds of complex design or custom solution, HYT technical team is ready to assist you in projects requirements analysis, raw material selection, processing method selection, cost control, etc. which is aim to produce and supply the best suitable seamless steel pipe with high precision and high performance for your tough projects.
Request a quote or contact HYT today to learn how we can support your next project with reliable products and timely delivery.
HYT’s seamless steel pipes are certified with ISO 9001 and API standards, ensuring top-quality and reliability.
HYT has a large inventory and can typically deliver standard seamless steel pipes within 5-14 business days.
Yes, HYT offers customization for dimensions, materials, and cross-sections. Lead times for customized orders typically range from 7-10 business days.
HYT provides competitive pricing, with bulk discounts available for orders exceeding 1000 units.
HYT offers 24/7 technical support, ensuring that any issues or questions are addressed promptly, both before and after purchase.




















