Steel Pipe Manufacturer – China Steel Plate Manufacturer-Guanzhousteel

Steel Pipe Product Range

Hot Rolled Seamless Steel Pipe,Seamless Steel Pipe,Hot Rolled Pipe

ASTM A106 seamless pipe, Grade B A53 ,API 5L steel pipe

Cold Rolled / Cold Drawn / Precision Pipe

precision steel pipe, cold rolled seamless tube,cold drawn pipe, cold drawn seamless tube
EN10305 seamless tube, DIN 2391 pipe
ASTM A519 cold drawn pipe

Boiler Pipe, Boiler Tube

ASTM A192 boiler tube, high pressure boiler pipe

Honed Pipe, Hydraulic Cylinder Tube

Skived Honed Tube, Honed Seamless Pipe

Alloy Steel Pipe, Chrome Moly Pipe

ASTM A335 P11 pipe, alloy seamless tube

Special shape pipe

Custom Pipe Shapes

Seamless Steel Pipe Manufacturer | Hot Rolled & Cold Drawn | China SMLS production base

Founded in 1997 in Liaocheng city, which is the famous SMLS steel pipe production base in China. Very large market here.
Complete range of varieties, competitive prices
Stock is sufficient, and shipments are timely
Belows are popular type:
cold rolled seamless steel pipe tube,precision seamless pipe,cold drawn precison pipe,boiler pipe,Honed pipe,Alloy steel pipe,ASTM A106, API 5L, hot rolled seamless

Contact us today for a fast quotation and reliable steel pipe supply.
Mail: sales@sdsteelmill.com, whatsapp: +86 15863503732

Years Experience

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Professional technicians

Production Line

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Factory Area

Seamless Steel Pipe Family Display

What's Our Customer's Opinion?

Date	Product	Project	Quantity	Shipping Method
Oct 2025	Hot Rolled Seamless Steel Pipe (ASTM A106 Gr.B)	Southwest Oil & Gas Pipeline Expansion	1,800 Tons	Sea Freight (Break Bulk)

"We needed heavy-duty seamless pipes for a high-pressure fluid transport system. Guanzhou Steel's hot rolled pipes exceeded our expectations in terms of structural integrity and pressure resistance. Their factory-direct manufacturing ensured we received a consistent batch with zero defects, and the provided MTC documentation made the compliance audit a breeze."

Marcus Thorne-Procurement Manager, USA

Date	Product	Project	Quantity	Shipping Method
Nov 2025	Cold Drawn Steel Pipe (ASTM A519 1020/1045)	Hydraulic Cylinder Production Line	750 Tons	Sea Freight (40ft GP Containers)

"For our hydraulic systems, dimensional accuracy and high tensile strength are non-negotiable. The cold drawn pipes from Guanzhou Steel provided a superior surface finish and the exact mechanical properties required for our heavy machinery. The lead time was impressive, and the packaging protected the pipes perfectly during the long sea transit"

Emily Roberts,Supply Chain Manager, Canada

Date	Product	Project	Quantity	Shipping Method
Jan 2026	Cold Rolled Carbon Steel Pipe (SAE 1010)	New Energy Vehicle (NEV) Chassis Project	520 Tons	Sea Freight (FCL)

"Guanzhou Steel has become our go-to supplier for cold rolled steel pipes. The tight tolerances and excellent surface quality allow us to move straight to the coating phase without additional pre-treatment. Their technical team understands the specific needs of the automotive industry, providing a level of reliability that is hard to find elsewhere. !"

Carlos Herrera, Senior Project Engineer, Malaysia

Date	Product	Project	Quantity	Shipping Method
Feb 2026	High-Precision Seamless Pipe (DIN 2391/EN 10305-1)	Precision Medical Equipment Frames	180 Tons	Sea Freight (LCL/FCL)

"In high-precision machining, even a 0.1mm deviation is a failure. Guanzhou Steel's precision seamless pipes delivered the exact OD and ID tolerances we demanded. The pipes arrived clean, with no oxidation layer, ready for our CNC processing. It's clear their quality control team takes their work very seriously"

Markus Schneider, Supply Chain Manager, Germany

Our Steel Plate Applications

Oil & Gas

Fluid Transport

Automotive

Petrochemical industry

Industrial & Mining

Frequently Asked Questions

1. What steel grades and specifications do you provide?

We offer a comprehensive range of steel pipes, including Hot Rolled, Cold Drawn, and Cold Rolled varieties, with outside diameters from 10mm up to 610mm (24″) and wall thicknesses reaching Sch160.

Our technical specifications strictly adhere to international standards such as ASTM A106/A53, API 5L, and DIN 2391, featuring high-performance grades like Gr.B, ST52, and AISI 1020/1045.

We specialize in high-precision tolerances as tight as $\pm 0.05 \text{ mm}$ for seamless tubes and provide specialized Ductile Iron Pipes (ISO 2531) to support diverse industrial and municipal infrastructure projects.

2.Do you accept third-party inspections?

BV, SGS…..Any other third party inspection is okay for us

3.Can you cut the pipess to my specific dimensions?

Yes. We offer precision laser cutting, plasma cutting, and flame cutting based on your CAD drawings or specific size requirements.

4. What is your Minimum Order Quantity (MOQ)?

For standard stock items, our MOQ is 1 ton. For special customized grades or sizes, the MOQ typically ranges from 5 to 10 tons.

5. What is the typical lead time for an order?

Stock items are dispatched within 7 days. For custom production orders, the lead time is generally 15–30 days, depending on the complexity and volume.

6. Do you offer free samples?

Yes, we provide free A4-sized samples for material testing. The customer only needs to cover the international courier/express charges.

7.How do you prevent rust during sea freight?

We use standard seaworthy export packaging: rust-proof paper wrapping, metal corner protectors, and heavy-duty steel strapping on wooden or steel pallets.

8. What are your payment terms?

T/T (30% deposit, 70% against B/L copy) or 100% Irrevocable L/C at sight. Flexible credit terms may be available for long-term partners.

Get Your Steel Pipe Quote in 24 Hours

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