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Carbon steel seamless pipe

Carbon steel seamless pipe
Seamless carbon steel pipes, with their seamless, integral structure, play the role of "high-pressure blood vessels" and "structural backbones" in the industrial field. Compared to welded pipes (straight seam or spiral) that you may be familiar with, their core characteristics lie in safety and high strength.

No. 121, Daqiao Road, Licheng District, Jinan City

Product Description
Spot warehousing
Product Inspection
Product Measurement
Customer Feedback
Parameter categoriesSpecific projectsDetailed description/numerical range
Specifications and dimensionsOuter diameter (OD)6mm - 660mm

Cold-drawn tube (precision): 6mm - 219mm

 Hot-rolled tube (standard): 32mm - 660mm

Wall thickness (WT)1mm - 50mm

 Thin-walled precision tubes down to 1mm

 Thick-walled high-pressure tubes up to 50mm and above

length3m - 12.5m

 Standard lengths are usually 6m, 9m, and 12m.

Common materialsHigh-quality carbon steel

10#, 20# (most commonly used, good weldability, used for fluids)

45# (high strength, used for machining, shafts)

low alloy steelQ345B (16Mn) (High strength, used in ships, bridges, and high-pressure vessels)
Boiler-specific steel20G (Designed specifically for high-pressure boilers, high-temperature resistant)
Implementation StandardsFluid transportGB/T 8163-2018 (Most common standard, for water, oil, and gas)
Mechanical structureGB/T 8162-2018 (For machining parts, not focusing on pressure bearing)
High-pressure boilerGB 5310-2017 (Strict standard for power plant boilers)
Petroleum crackingGB 9948-2013 (For refinery furnace tubes and heat exchangers)
Mechanical propertiestensile strength≥ 410 MPa
Yield strength≥ 245 MPa
elongation≥ 20% - 25% (Good plasticity, easy to bend)
hardnessUntreated ≤ 156 HB


仓库现货4


01

Acid and alkali resistance test

02

Zinc layer experiment

03

Bending test

04

Yield strength test

05

Tensile strength test

06

Spectral detection

07

Hardness testing

08

Chemical composition detection

壁厚测量

Thickness measurement

厚度测量

Thickness measurement

厚度测量666

Thickness measurement

半径测量

Radius measurement

直径测量

Diameter measurement

直径测量2

Diameter measurement

长度测量

Length measurement

涂层测量

Coating measurement

TESTIMONIALS

The quality of this batch of steel pipes far exceeded expectations. The material is uniform and thick, the cut is smooth and burr-free, and the installation is seamless. The project efficiency was maximized, and the cooperation was very pleasant!

Julian

Julian

Sales Director

We've collaborated several times, and the hardness and toughness of the steel perfectly meet our project standards. The delivery speed is fast, and the packaging is secure with no damage. A reliable supplier is our first choice!

John Smith

John Smith

Sales Director

The surface treatment of the steel pipe is very good, the anti-rust coating is uniform and firm, and the dimensional accuracy is very high. It does not require secondary processing at all, which greatly saves our time and costs.

Freya

Freya

Purchasing Manager

The steel is very cost-effective, has stable mechanical properties, and passed the test on the first try. Customer service responded promptly, and communication was very smooth. We will continue to cooperate with them in the long term.

Elara

Elara

Purchasing Manager

The custom-made irregular-shaped steel pipes perfectly replicated our design drawings. The workmanship was exquisite and flawless, and the delivery time perfectly met the project schedule. We are extremely satisfied with this purchase!

Lila

Lila

Purchasing Manager

 Online Consultation

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