Product Specifications

Parameter	Details
Material Grades	Q345,Q355,Q390,Q420,Q460,Q500, Q550, Q620, Q690, Q960 (Custom alloys available)
Shape	Round, square, Rectangular or any other special shaped
Yield Strength	345-1000 Mpa (Test reports available)
Out diameter（OD）	10-600mm, other sizes negotiable
Wall Thickness（WT）	1.2-30mm, other sizes negotiable
Length	Up to 16m
Standards	GB/T 3094-2012, GB/T 1591-2008,EN 10210
Delivery Condition	Cold-drawn, Q&T (Quenched & Tempered), Normalized
Payments Term	T/T or L/C
MOQ	1 ton

Production Description

We supply high-quality seamless steel pipes, formed from round seamless tubes through cold drawing processes. These pipes feature uniform structure, high dimensional accuracy, and smooth surface finish, making them ideal for structural and precision machining applications.

Our seamless pipes offer excellent compressive strength and bending resistance, widely used in structural engineering, machinery manufacturing, container frames, agricultural equipment, and automotive chassis. Customization is available for specific lengths, cutting, and anti-corrosion coatings.

With in-house mold development and technical support, we ensure short lead times and third-party inspection options to meet diverse global customer requirements.

Key Features

1.High Yield Strength	With yield strength ranging from Q345 to Q960 MPa, our pipes withstand greater stress without permanent deformation—offering 30% more strength than standard steel pipes. This makes them ideal for demanding structural and pressure applications.
2.Lighter Weight, Same Load Capacity	High strength-to-weight ratio allows the use of thinner and lighter pipes while maintaining load performance—reducing material cost and transport weight.
3.Outstanding Fatigue & Cryogenic Resistance	Engineered for extreme environments, these pipes retain impact resistance at temperatures as low as -60°C. Widely used in offshore platforms, mining, and cold-region installations.
4.Superior Consistency and Processability	Produced via cold-drawn + Q&T (Quenched and Tempered) processes, the pipes feature uniform grain structure and mechanical performance—perfect for precision assembly and automated welding.
5.Customizable Shapes and Sizes	Available in round, square, rectangular, and special shapes. Supports non-standard dimensions, thick/thin walls, and extended lengths—tailored to your project needs.
6.Longer Service Life	Compared to welded pipes, high yield seamless pipes deliver up to 30% longer lifespan under the same working conditions, providing superior value over time.

Application

Oil & Gas Industry	Pipeline systems for transporting oil, natural gas, and petroleum products Drill collars, risers, casing, and tubing for high-pressure environments
Offshore & Marine Structures	Subsea pipelines, jacket structures, and legs of offshore platforms Components exposed to harsh marine environments requiring high strength and corrosion resistance
Construction & Infrastructure	High-rise buildings, bridges, and structural supports requiring superior load-bearing capacity Reinforcement for tunnels and seismic-resistant constructions
Automotive & Heavy Equipment	Axle tubes, suspension systems, and chassis components High-load-bearing parts for construction and mining equipment
Power & Energy	Boilers and heat exchangers operating under high pressure and temperature Structural piping in thermal, nuclear, and renewable power plants
Defense & Aerospace	Military vehicles, armored tubes, and high-strength frame structures Lightweight yet strong structural parts requiring excellent performance under dynamic loads

Available Mold

Customization

With in-house tooling, material sourcing, and technical support, we offer flexible customization to meet your specific needs:

Dimension Customization: Non-standard diameter, thickness, and length
Material Options: Carbon steel, stainless steel
Processing Services: Cutting, logo marking
Surface Treatment: Painting, shot blasting, oiling, galvanizing
Marking & Packaging: Custom logo, labels, and packaging options

We support drawing-based production, small batch trial orders, and fast sample delivery to help your projects start quickly.

Product Inspection

Inspect the outer diameter
Inspect the zine amount
Inspect the thickness
Mechanical property
Metallography testing
Chemical composition analysis
Non-destructive testing
Salt spray test

Testing Equipment

Universal Servo Tensile Testing Machine
Charpy Impact Testing Machine
Direct-Reading Spectrometer
Salt Spray Test Chamber
Vickers Hardness Tester
Metallurgical Microscope

Packaging & Delivery

We provide professional packaging and flexible delivery options based on your product and shipping needs:

Packaging Methods:
- Steel-strapped bundles with labels
- Plastic wrap + woven fabric cover
- Export-grade wooden cases or pallets
- Plastic end caps for tube protection
Delivery Options:
- Sea freight, truck transport, or rail shipment
Common ports:
- Shanghai, Changsha
Lead Time:
- Standard sizes: 7–15 days
- Custom orders: 30–45 days

Export documents such as CO, CQ, and third-party inspection reports are available upon request.

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FAQ Section

Q1: How could you guarantee your products?

A1: Each piece of products is manufactured by certified workshops, inspected by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.

Q2: Can we visit your factory?

A2: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.

Q3: Are you a factory or trading company?

A3: We are manufacturers and also do export trade.

Q4: Can I get some samples?

A4: Yes, We are pleased to provide you with samples of our products.

Q5: How about MOQ?

A5: We have stock for common sizes at hand, so one ton per size is acceptable.